January 24, 2025
INTRODUCTION TO JSON VALIDATOR WITH JSON SCHEMA
Validating data is an important process. It helps to ensure that applications operate smoothly. One powerful tool for this purpose is the JSON Schema Validator.
In this post, I will introduce you to the fundamentals of using JSON Schema to validate your data, helping you ensure your JSON data structure follows the specified requirements.
What is JSON Schema?
JSON Schema is a declarative language for defining structure and constraints for JSON data.
JSON Schema will also be considered as a design document for input data as it is declared to define the rules, structure and constraints for input data.
What is JSON Schema Validator?
JSON Schema Validators are tools that implement the JSON Schema specification.
JSON schema validator help to check whether the input JSON data complies with the rules and structure defined in the created JSON Schema.
Try it out!
Step 1: Create a JSON Schema
To understand how to define a JSON schema, refer to the link bellow
https://json-schema.org/understanding-json-schema/reference
In this post, I will create a simple JSON Schema for employee information as bellow
Step 2: Prepare JSON Data
Prepare your JSON Instance with valid data (valid_data.json)
Step 3: Install Ajv JSON schema validator
Ajv is used by a large number of JavaScript applications and libraries in all JavaScript environments - Node.js, browser, Electron apps, WeChat mini-apps etc. It allows implementing complex data validation logic via declarative schemas for your JSON data, without writing code.
Install AJV JSON schema validator using npm
Step 4: Validate JSON Data with Javascript
Now, try it with JavaScript (validate.js)
Directory structure
Execute the javascript source code to validate the valid_data.json
Validation Result is valid data with valid_data.json
Now, I try to create an invalid_data.json with invalid data
Load it with javascript
Directory structure
Execute validate.js file
Validation Result is invalid data with invalid_data.json
To check error details, use the website https://www.jsonschemavalidator.net/
When to use a JSON Schema validator?
If you need to validate JSON data in your application, JSON Schema provides a standardized way to check the structure and content of the data. This is especially useful for ensuring data integrity and consistency.
Conclusion
By defining clear rules and constraints, JSON Schema not only minimizes errors but also enhances reliability and consistency in your applications.
JSON Schema validator helps you ensure that JSON data is structured and validated correctly.
Take the time to research and implement JSON Schema validator in your projects. You'll find that managing and validating data becomes easier and more efficient than ever before.
References
https://json-schema.org/overview/what-is-jsonschema
https://ajv.js.org
https://www.jsonschemavalidator.net
https://json-schema.org/understanding-json-schema/reference
https://json-schema.org/img/json_schema.svg
https://hailbytes.com/wp-content/uploads/2022/02/JSON_SchemaTitle_Image.png
January 24, 2025
Easily improve performance when rendering a list of large data in Angular
As we know, Angular is one of the most popular Frontend frameworks/libraries along with ReactJS and VueJS.
There are currently many projects developing based on Angular, including those at IVC.
Therefore, the Angular user community is very large, which is very helpful in solving problems encountered when developing with Angular.
You will always receive many useful answers from others in the community.
During the process of working with Angular, I also encountered some problems related to performance.
So, in this post, I want to share with you a problem that we often do not consider when working with Angular, which is rendering a list of large data but still ensuring the response time of the website.
1. What is Angular?
Angular is an open-source frontend JavaScript framework developed by Google and commonly used for building large-scale enterprise applications.
Based on TypeScript but also supports JavaScript.
To understand more about Angular, you can refer here: https://v16.angular.io/docs
2. Rendering a list of large data in Angular
To render a list in Angular, we can use the *ngFor directive. The *ngFor is Angular's repeater directive. It repeats the host element for each element in a list.
That's the easiest way to render a list in Angular. However, this method is only really useful in cases where you need to render a list of data that is not too large.
If you have a list of data that is too large, ensuring the response time of the website must be a top priority.
At this time, if you still use the above rendering method, it will take a lot of time to process and render to the UI, which is not good for the user experience.
So, how to render in case the data is too large?
3. Solution
To render a list of large data, we have many ways in Angular, such as implementing paging, lazy-loading...
However, in this post, we just focus on the lazy-loading solution.
Lazy-loading, simply put, is a solution to split data to render many times until the last element in the list is rendered.
If you have a list of data with a length of 10,000 elements.
You can split it and render 50 elements per time.
At this time, the website only needs the amount of resources to render 50 elements instead of 10,000 elements.
This will greatly improve the response time of the website.
4. Implementation
Firstly, we need to specify a custom TrackByFunction to compute the identity of items in an iterable.
If a custom TrackByFunction is not provided, the *ngFor directive will use the item's object identity as the key.
This means that when you push more data to the original data list, it will re-render almost all the data in the data list even though there are many similar elements.
Therefore, we need to customize a TrackByFunction to compute the identity of items in an iterable.
This means that when the server needs to render more data from the original list, it only needs to render the newly added elements. This helps reduce the resource load as well as the response time of the website.
A TrackByFunction usually looks like this:
Apply it to the *ngFor directive:
Next, split the data from the original list, and push a part of the data to the rendering list (state variable).
Each time the renderListLazy() method is called, it will push new elements to the original list, 50 elements at a time.
Your task is to choose when to call the renderListLazy() method again, such as when the user scrolls to the end of the displayed data list, or when the user clicks a trigger button.
5. Experimental results
Here are the experimental results when I compared the basic rendering method and the lazy rendering method, let's observe.
With the normal rendering method, when I rendered a list of 100,000 elements.
It takes ~7.5 s, it's very poor.
With the lazy rendering method, when I also rendered a list of 100,000 elements.
With lazy rendering, it takes ~9.75 ms, it's so fast.
Through the above test, we have seen the superiority of lazy-loading, with data of 100,000 elements, lazy-loading is ~780 times faster than normal-loading.
Moreover, the performance will be more different when the number of elements of the list increases.
6. Conclusion
Through this post, I have introduced a simple technique for optimizing rendering large data lists in Angular.
Hope it is useful for you and will be applied to future projects.
Thank you for reading!
[Reference Source]
https://v16.angular.io/docs
https://angular.dev/api/core/TrackByFunction?tab=description
https://www.pexels.com/photo/hand-holding-shield-shaped-red-sticker-11035543/ (image)
January 24, 2025
Creating a magical effect for your website with Three.js: Transforming tiny circles into a beautiful image
Three.js is a flexible JavaScript library that makes using WebGL easier and more intuitive. It lets developers create detailed 3D graphics for the web without having to deal with the complex details and low-level API of WebGL. Three.js has a variety of features, such as tools for controlling 3D objects, materials, lighting, cameras, and animations. It is created with user-friendly APIs, comprehensive documentation, and a big user base, making it not just simple for beginners to learn and use but also powerful enough for advanced projects. Three.js is a good option for creating eye-catching visual effects, interactive 3D experiences, or just simple animations.
In this blog post, I will share my approach to creating a magical effect where tiny circles (particles) rearrange themselves to form a PNG image.
January 24, 2025
Vue.js and Laravel: The perfect combination for modern Web Application Development
Vue.js is a powerful JavaScript framework, while PHP Laravel is a popular PHP framework. When combined, you can leverage the strengths of both to create modern, efficient, and maintainable web applications.
1. Introduction to Vue.js and PHP Laravel
Vue.js – Frontend: A flexible and easy-to-learn JavaScript framework, often used to build interactive user interfaces. Vue.js uses Virtual DOM to optimize performance and provides powerful tools like Vue CLI for project management.
PHP Laravel—Backend: A giant in PHP programming, Laravel is a robust and comprehensive PHP framework. It offers many built-in features, such as routing, authentication, and Eloquent ORM for database management.
2. Why Combine Vue.js and Laravel?
- Easy Maintenance: Vue.js and Laravel have clear and understandable structures, making it easier to maintain and expand applications.
- Easy Integration: Laravel Mix makes integrating Vue.js into Laravel projects simple and efficient.
- Large Community Support: Both frameworks have large communities and extensive documentation, making it easy to find support and learn.
- Rich Ecosystem: With tools like Eloquent ORM, Blade, Artisan...
- Integrated Security: Provides built-in authentication, encryption, and CSRF protection.
- High Performance: Vue.js uses Virtual DOM to optimize user interface performance, while Laravel provides powerful tools to manage the backend.
3. Installation and Configuration
- Install Composer from getcomposer.org.
- Create a new Laravel project:
composer create-project --prefer-dist laravel/laravel project-name
- Run the Laravel application:
cd project-name php artisan serve
The application will run at http://localhost:8000
4. Integrating Vue.js into Laravel
- Install Laravel Mix:
Run the following command in the Laravel project directory
npm install laravel-mix --save-dev
- Configure Laravel Mix:
Create or edit the `webpack.mix.js` file in the root directory of the Laravel project to compile Vue.js files:
- Install Vue.js in Laravel
Install Vue 3 and Vue Loader:
npm install vue vue-loader
Install other dependencies:
npm install
- Create a Vue Component
Create a new Vue component in the `resources/js/components` directory:
- Using Vue Component in Laravel
Update the `resources/js/app.js` file to use the Vue component:
- Configure Vite for Vue:
npm install @vitejs/plugin-vue
- Update Blade Template
welcome.blade.php
- Run Laravel Mix
Run the following command to compile the Vue.js files:
npm run dev
- Output:
5. Example how to Vue and Laravel Work Together
1. Backend (Laravel):
Laravel handles the database, Authentication, API endpoints, and server-side logic.
Example API route for a post application:
Route::get('/login', [LoginController::class, 'index']);
Route::get('/user', [UserController::class, 'index']);
Route::get('/posts', [PostController::class, 'index']);
2. Frontend (Vuejs):
Vue.js fetches data from the Laravel API and dynamically renders it on the page.
Example using Axios:
async handleGetPostsList() {
const response = await axios.get('/api/posts');
console.log('response data: ', response);
}
Conclusion
Vue.js provides an interactive and flexible user interface, while Laravel offers a robust and comprehensive backend platform. Combining Vue.js and PHP Laravel allows you to leverage the strengths of both frameworks to develop modern, efficient, and maintainable web applications.
[Reference]
- https://vuejs.org/
- https://laravel.com/
- https://welcm.uk/blog/best-admin-templates-to-get-you-started-with-laravel-and-vuejs
- https://wpwebinfotech.com/blog/how-to-integrate-vuejs-with-laravel/
January 24, 2025
Anti-Patterns That Every Developer Should Know
Understanding Anti-Patterns in software development
In software development, it's important to write code that is not only functional but also clean, maintainable, and scalable.
However, developers often encounter many challenges while building systems, and in some cases, they may fall into common traps known as anti-patterns.
These are poor programming practices that seem like good solutions at first but, over time, lead to inefficiencies, hard-to-maintain code, or even system failures.
In this article, I want to explore some well-known anti-patterns in software development and provide examples in code to help you understand how to identify and avoid them.
1. Hard-code, Magic String and Number
Hard-code means hard-coding some values and some logic that needs to be changed directly into the code, such as database connection, some configuration...
Magic string and magic number means hard-coding a number, a magical string, without clearly stating where that number/string comes from, or what it is...
For example, the code below is both hard coded and uses magic numbers.
Solution: This Anti Pattern is easy to handle. Just don't hardcode the config values (but read from the config file or know the environment), separate the magic numbers into separate variables, or write more comments.
The code after the fix is much easier to understand, right?
2. Callback hell
The concept of the callback is certainly not strange to JavaScript coders, especially when processing asynchronous JavaScript functions (like in NodeJS for example).
However, if we overuse callback functions without proper coding methods, our code will become extremely complicated and difficult to read.
Solution: to avoid callback hell, there are several approaches that make asynchronous code more manageable and readable. Two common solutions are Promising and Async/Await.
- Using Promises: A Promise is an object representing the eventual completion (or failure) of an asynchronous operation and its resulting value. Promises allow you to avoid nested callbacks by chaining .then() methods.
- Using Async/Await: Async/Await is a more modern and cleaner approach to handling asynchronous code. It allows you to write asynchronous code in a synchronous-looking manner, making it much easier to read and maintain.
3. God Class/Object
A God Object is an anti-pattern where a single class or object is given too many responsibilities, making it overly complex and difficult to manage.
This is a common mistake among students who are working on projects, or in projects that are too old, and written by inexperienced developers.
Gob Class means a super-huge, Divine Class that can do anything, so it is called God. This mistake occurs when developers put too many features into one class.
Solution:
- Following the Single Responsibility principle in SOLID, each class should only have 1 Responsibility.
- Refactor the code gradually, separate the class into smaller classes, and group functions/data that are often used together into a separate class.
4. Copy-Paste Programming
Another common anti-pattern is copy-paste programming, where developers duplicate code instead of abstracting common functionality into reusable functions or classes.
This is a pattern of writing code once, the next time you need to use it, copy the old code, and modify it a bit to make it run.
In the long run, this will cause the project's code to swell. The code is repetitive, and when editing or fixing bugs, many places will have to be fixed. If you forget or miss something, you will miss bugs.
Solution:
The simplest way is to separate the code that needs to be used into a separate function, a separate library to use.
5. Spaghetti Code
Spaghetti code refers to code that has a tangled and convoluted structure, often because of excessive use of global variables, lack of proper design, the flow is roundabout, extremely difficult to read, and difficult to fix.
The reason could be that the coding team doesn't have a specific design, or the developer is lazy so they code haphazardly. Or because the requirements are constantly changing and overlapping, but the modules and designs are not updated, so they also overlap!
Solution:
- This is the most difficult Anti Pattern to solve completely! Because it is not only related to the code but also related to the design of the modules in the system
- The easiest way is to destroy and rewrite when you understand the original logic, but it will take a lot of time and may lack requirements
- You should gradually refactor the code and separate it into small parts. You can redesign the modules if necessary.
6. Golden Hammer
The Golden Hammer anti-pattern happens when a developer uses a familiar tool or technology to solve every problem, even when it's not the best fit.
For example, a programmer was assigned to develop a website project that required a simple UI and required fast response, with no animation.
However, he chose a UI library that he was familiar with even though it was quite heavy, had many unnecessary configurations, and was difficult to use for beginners.
Using the wrong tool for the job can lead to inefficiency, poor performance, and scalability issues. It's essential to choose the right tool or technology based on the specific needs of the problem.
Solution:
Evaluate the problem carefully and choose the right technology. For instance, if you need to store large amounts of unstructured data, consider using NoSQL databases like MongoDB or Cassandra instead of traditional relational databases.
7. Premature Optimization
Optimizing code is the process of editing/rewriting code to reduce size, limit input/output, increase execution speed, and reduce the amount of hardware needed.
Sometimes, optimizing code too early (not knowing where it runs slowly, and which part to optimize) is completely unnecessary, it also makes the code more complicated, harder to read, and harder to debug.
Solution:
Don't optimize too soon or too quickly. Ask yourself if the code needs or is worth optimizing.
Conclusion
Avoiding anti-patterns is crucial to writing high-quality, maintainable code. By recognizing and addressing issues like God Objects, Spaghetti Code, Lazy Classes, Copy-Paste Programming, and the Golden Hammer, developers can build systems that are easier to maintain and extend over time. As software development practices evolve, it’s essential to constantly improve our approach and learn from past mistakes
[References]
https://dev.to/yogini16/anti-patterns-that-every-developer-should-know-4nph
https://www.freecodecamp.org/news/antipatterns-to-avoid-in-code/
https://medium.com/@christophnissle/anti-patterns-in-software-development-c51957867f27
January 24, 2025
Consuming Python API Testing with Pytest and Flake8
Testing is indispensable and crucial when developing an API for your application. It ensures that all functionalities works correctly and prevents unexpected errors. In Python, we can combine Pytest for functional testing and the Flake8 is an analysis tool to check the quality of a source code. Today, we will explore how to set up and use these tools effectively for testing an API.
1. What is Pytest?
Pytest is a flexible testing framework that supports fixtures, written in Python, and used for parameterized testing and plugins. It is ideal for API testing, capable of handling both basic and complex test cases.
2. Why write unit tests?
- Ensure that the returned results are as expected, confirming the correctness of the API.
- Help detect and identify parts affected by new updates, making maintenance easier.
- Help discover and fix errors early in the development phase, reducing the risk of serious issues in the production environment.
- Test individual parts of the API to ensure they function correctly and reliably.
3. Environment Setup
3.1. Install pytest: pip install pytest
3.2. Install flake8: pip install flake8
3.3. Install requests library: pip install requests
3.3. Install flask: pip install flask
3.4. Verify installation:
pytest --version
flake8 --version
4. How to Implement Pytest
4.1. Create an API file: app.py

4.2. Create test cases:
Test Case ID | Description | Steps | Type | Expected Result | Date |
---|---|---|---|---|---|
TC001 | Call API successful | Request to the URL: http://127.0.0.1:5000/division | Normal case |
status_code: 200
message: "Successful"
result: 1
|
dd/mm/yyyy |
TC002 | Missing parameter "value1" | Request to the URL: http://127.0.0.1:5000/division | Error case |
status_code: 400
error: Missing parameters
|
dd/mm/yyyy |
TC003 | Missing parameter "value2" | Request to the URL: http://127.0.0.1:5000/division | Error case |
status_code: 400
error: Missing parameters
|
dd/mm/yyyy |
TC004 | Parameter value 2 is zero | Request to the URL: http://127.0.0.1:5000/division | Error case |
status_code: 400
error: Invalid parameters
|
dd/mm/yyyy |
more... | ... | ... | ... | ... | ... |
4.3. Create test code:
Create a test file and write your test cases. Your test file should start with test_ or end with _test.py. Here’s an example of a test file: test_app.py

4.4. Execute tests
Open a terminal and run the API: python app.py
Open another terminal and run Pytest: pytest test_app.py -v
4.5. Results
Pytest will display the results of the test cases in the terminal
4.5.1 Fail
4.5.2 Passed all test cases
5. What is flake8 and How to Implement It?
5.1. What is flake8?
Flake8 is a Python linting tool that helps you check your code for common issues and ensures it follows PEP 8 (Python's style guide).
Flake8 checks for:
- PEP 8 compliance (Python's style guide).
- Common bugs or code smells.
- Unused variables or imports.
By integrating flake8, you can ensure that your code is clean, maintainable, and adheres to industry standards.
5.2. Run Flake8 to check for issues in the source code: flake8 app.py
5.3. Result:
Fail
When an error occurs, you can refer to the rules of Flake8 at Flake8 Rules (https://www.flake8rules.com/) to fix the error. This site provides a detailed list of rules, helping you to easily understand and correct issues in the source code according to PEP 8 standards.
Passed
Conclusion
Combining Pytest and Flake8 streamlines code quality assurance. Pytest validates functionality, while Flake8 enforces coding standards, ensuring your code is both robust and well-structured.
Reference
- https://docs.pytest.org/en/
- https://flake8.pycqa.org/en/latest/
- https://www.flake8rules.com/
- https://dev.to/coderpad/a-guide-to-database-unit-testing-with-pytest-and-sqlalchemy-1i96
What is IT Staff Augmentation - A Flexible Solution to Scale Your Workforce As Needed
In recent years, the demand for IT staff augmentation has been on the rise among organizations worldwide. This growing trend can be attributed to several factors, such as increasing expenses in hiring skilled software developers, growing necessity for agile development practices, and the constant push towards becoming more adaptable, quickly scalable teams.
In support of this surge in the trend, market data points out, according to Verified Market Research, the IT staff augmentation service market was valued at USD 299.3 billion in 2023 and is estimated to reach USD 857.2 billion by 2031, reflecting a strong 13.2% compound annual growth rate (CAGR) from 2024 to 2031. In other words, it is projected that the market may indeed reach threefold of its current worth by the year of 2031, a clear indication of the fact that IT staff augmentation is quickly taking root across the world.
With operational experience of over 20 years delivering IT staff augmentation service and software development outsourcing to the clients around the globe, we at ISB Vietnam have seen first-hand how such solutions can turn around the scaling and innovating capabilities of a given organization. In this article, we shall take a close look at the IT staff augmentation basics, weighing some pros and cons before sharing a few best practices. By the end, readers will have a far better understanding of how working with a seasoned IT staff augmentation company can help meet their ever-evolving business needs.
IT Staff Augmentation-definition
IT staff augmentation is a versatile solution for staffing temporarily external IT professionals with particular skills that your organization needs. Usually, you take help from a company that provides skilled developers, engineers, or other IT experts. These specialists become part of your internal team while you manage the project. Thus, you benefit from skill sets while retaining project management control.
The real benefit of IT staff augmentation services is agility and cost-effectiveness. You scale up or down your workforce based on project needs but without costing much more than a full-time hire or going through a long process of hiring. Such agility and flexibility aid faster-turning industries amidst frequently changing market trends.
Staff Augmentation vs. Project Outsourcing
When companies need external help for an IT project, they generally consider two main options: staff augmentation or project outsourcing. With project outsourcing, the vendor typically takes complete ownership of the project, including all management responsibilities. By contrast, IT staff augmentation keeps project management in-house. Your organization retains leadership of daily operations and decision-making, while the external team members integrate with your existing workflows.
Key Benefits of IT Staff Augmentation
When projects are fast-paced and susceptible to changing developments, IT staff augmentation frequently gives a lot more flexibility than project outsourcing. Especially where the organization already has an in-house development team and prefers to manage project management internally. This allows you to have temporary support from outside experts added to your existing team, hence reacting to changing requirements much faster and running projects in a very agile manner. Mentioned below are the three crucial reasons that demonstrate the reasons for the widespread acceptance of IT staff augmentation services.
1. Quick Access to Highly Specialized Talent
In case there is a lack of certain IT skill sets in the team, staff augmentation simply offers a direct path to top professionals around the world. Rather than wasting valuable time in posting job ads, interviewing, and onboarding new employees, you will quickly source what you need, such as experts with the necessary talents and experience.
When you partner with IT staff augmentation companies, the capabilities of the organization can ramp up very quickly. This allows your business to remain on track without sacrificing quality or violating delivery deadlines.
2. Optimized Costs and Flexible Resource Allocation
Another major benefit is cost optimization. Hiring full-time employees for short-term needs can lead to excessive overhead due to salaries, benefits, and recruitment expenses. In contrast, IT staff augmentation requires payment only for the duration you actually need the additional resources.
This pay-as-you-go model helps keep budgets predictable and manageable, giving you the freedom to expand or contract your team in line with project demands. In other words, you can sidestep the financial burden of maintaining permanent staff without risking a shortfall in workforce capabilities when project requirements intensify.
3. Continuity in Management and Operations
By integrating outside specialists into your current team, you can retain your existing processes, tools, and management style. In an IT staff augmentation setup, your organization maintains control of day-to-day project oversight. You direct tasks, set priorities, and coordinate development efforts just as you would with an entirely in-house team.
This stands in contrast to project outsourcing, where a significant portion of oversight is delegated to the vendor. For organizations that value hands-on control of critical projects, staff augmentation offers a middle path—bolstering your team with expert talent, yet preserving your internal workflow and decision-making authority.
Potential Drawbacks of IT Staff Augmentation
While IT staff augmentation offers clear benefits, it also presents certain challenges. Being aware of these potential issues can help your organization make the most of this approach. Below are two key considerations:
1. Projects Needing Extensive Internal Knowledge or Long-Term Commitment
IT staff augmentation tends to be most effective for focused or shorter-term projects with well-defined goals. If a project demands deep organizational context—such as complex business processes—or spans multiple years, the additional onboarding and knowledge transfer may outweigh the advantages. In such scenarios, forming a dedicated internal team or pursuing a different staffing model could be more sustainable.
2. Balancing Internal and External Resources
Relying too heavily on external IT staff may dilute your organization’s internal expertise and reduce control over critical operations. While staff augmentation can provide a flexible boost to your workforce, it’s essential to maintain a strong in-house foundation. This balance helps preserve core institutional knowledge, ensures continuity, and guards against the risks that come with sudden changes in external resources.
In all knowledge and with the foresight that any pitfalls may bring, staff augmentation can be strategically and smartly approached to provide a substantial level of flexibly without the drawbacks.
For those interested in diving deeper into effective IT Staff Augmentation strategies, feel free to reach out to us at ISB Vietnam where our team of experts is ready to provide tailored guidance and support.
Best Practices for Successful IT Staff Augmentation
Using IT staff augmentation services effectively is more than just hiring more staff. A clear plan is needed, beginning with a clearly defined intention and ending with the support for your extended team. The following six best practices will serve as a guide:
1. Set Goals and Objectives
Before delving into IT staff augmentation, ensure a clear view of what your project requires in terms of needs, timelines, and challenges. As mentioned in the sections in “Potential Drawbacks of IT Staff Augmentation”, there are instances where it would be fitting to resort to other means, such as hiring in-house employees or outsourcing the whole project . Such clarity will position you properly in deciding whether IT staff augmentation will suit your needs.
2. Set the Skills and Competencies Needed
Once the goals and objectives have been set, accurately outline the technical and soft skills that your extended staff will need. Apart from the basics: budget limits and duration of a project, also consider having specialized technical expertise, industry knowledge and language skills, and personality characteristics such as flexibility and communication skills. This all-encompassing view will assist in identifying candidates who not only meet the required technical fundamentals but also harmonize with your in-house team.
3. Choose the Right IT Staff Augmentation Partner
Finding a reputable IT staff augmentation company is crucial. Different providers offer different talent pools, specialty areas, and resource availabilities. Your perfect partner should provide the exact mix of skills and experience you are looking for.
For instance, at ISB Vietnam, we leverage our heritage as a Japan-affiliated company based in Vietnam to provide top-tier developers who possess high-level technical expertise and strong quality control skills. We also excel in English and Japanese language support, enabling us to deliver IT staff augmentation services to clients worldwide. For deeper insights into Vietnam’s software development talent and IT market, you might refer to these articles:
Key insights and trends for software developers in Vietnam 2024–2025
4. Conduct Interviews with Prospective Team Members
Even with a trusted partner, it’s wise to interview any candidates who will play a major role in your project. Just as you would with full-time employees, use this opportunity to verify their technical skills and assess soft skills like communication, teamwork, and adaptability. If you have a large pool of candidates and can’t interview everyone, focus on key contributors. This approach helps ensure a strong cultural fit and alignment with your project goals.
5. Clearly Define Roles and Responsibilities
Once new IT staff are inducted into your team, it is wise to set out roles and responsibilities in clear terms. The clarity in each person's role in the whole set of things for the project will enhance accountability, prevent confusions, and simplify workflows. The principle also promotes cohesiveness within the team such that everybody knows how best they can contribute toward the success of the project.
6. Offer Ongoing Support and Integration
After your augmented team members have onboarded, maintain a supportive environment. Temporary staff often face unique challenges, such as understanding existing processes and team dynamics. As a manager, keep an open line of communication to ensure they receive the guidance they need. By proactively offering assistance, you can help them integrate faster, enhance productivity, and address any minor issues before they escalate.
By following these best practices, companies can optimize the impact of IT staff augmentation services, ensuring that temporary team members become true collaborators.
Conclusion
Due to increasing pressure to produce more and greater innovations at a higher speed and efficiency, IT staff augmentation has emerged as one of the most effective means to add resources to development teams on short notice. Whether niche talent is needed for a project with time sensitivities or you would like to scale technical capabilities with less commitment than full-time hiring, IT staff augmentation services can fill such gaps on short notice and in a cost-efficient manner.
However, be sure to approach this model with a focus on clear objectives, demarcated roles, and a solid onboarding process. By identifying exactly what skills you need, connecting with the appropriate IT staff augmentation company, and providing continuous support to augmented team members, many of the hurdles that characterize short-term staffing solutions can be subdued.
Larger factors should guide the decision regarding staff augmentation. In the case of short-term, specialized needs, which require quick turnaround times, staff augmentation can enable agility and foster innovation. For longer-term projects, a more permanent in-house team or some form of outsourcing may work better. Careful, thoughtful weighing of these factors will help ensure that your staffing choices drive the sustainable growth you're after and keep your projects on track.
About ISB Vietnam
At ISB Vietnam, a leading offshore software development outsourcing company in Vietnam, we’ve spent over 20 years helping companies worldwide navigate their IT requirements—offering not just skilled developers but also the high quality standards and language support that global projects demand.
If considering an IT staff augmentation strategy or looking for a trusted partner to meet specifications for your organization's needs, we would like to show you our resources and expertise.
Contact us to find ways how to collaborate for your success or something.
Vietnam’s IT Market Landscape 2024-2025: Why Vietnam Leads in IT Outsourcing and Offshore Software Development
The rapid advancement of IT technologies related digital transformation (DX) and artificial intelligence (AI) has been remarkable lately. What was once considered the cutting edge or a niche technology has progressively become an integral part of business operations, creating continually rising demand for software development expertise. Today, those involved in software development are facing a significant shortage of skilled developers worldwide, which has naturally led to rising labor costs.
Worldwide challenges have resulted in an increase in businesses turning to offshore software development and IT outsourcing solutions. Such approach provides access to a large pool of highly skilled and cost effective talent. Offshore development destinations have been popular throughout Asia, Eastern Europe, and Latin America. Amongst these regions, Vietnam has stood to be among the most appealing as its ever-growing reputation gets them to be a leading software development and IT outsourcing services hub.
Based on the previous article, this article presents the latest developments and trends in Vietnam's IT market. The findings, published in the newest Vietnam IT Market Report 2024–2025 by TopDev, Vietnam's leading IT talent platform, along with our two decades experience at ISB Vietnam in offshore software outsourcing service providers, together, these data form the basis of this article, which explores the current state of Vietnam's IT industry and highlights the unique advantages it offers as an outsourcing destination.
Vietnam’s Population and Workforce Provide Abundant IT Talent
According to Key insights and trends for software developers in Vietnam 2024-2025, Vietnam boasts a robust IT workforce, with approximately 560,000 professionals employed in computer science and IT-related fields. This is bolstered by about 55,000-60,000 students joining computer science and IT-related majors every year, adding to the tank of skilled software developers and IT specialists.
This abundant IT talent is supported by several factors, with Vietnam's demographics being one of the first. Vietnam's population continues to rise, and by December 2023, the population reached nearly 100 million people, making it the 15th largest population worldwide, and ranks 3rd in Southeast Asia.
Year | Vietnam’s Population |
2021 | 98.51M |
2022 | 99.46M |
2023 | 100.3M |
Vietnam's youthful population, as depicted by its population pyramid, makes its median age fairly young at 33.1 years as reported by the CIA’s The World Factbook. For perspective, on the other end of the scale, the median age in the U.S. is 38.9, in the U.K. 40.8, in Germany 46.8, in Singapore 39.4, in Australia 38.1, and in Japan 49.9. This youthful age profile, where the larger segment of the Vietnamese population belongs to the age relative to the working force, provides a solid advantage for the country in promoting its IT sector.
For software developers and IT professionals, it is essential to keep pace with the changing leaps in technology. The younger workforce is generally flexible, eager to learn, and quick to embrace new tools and practices. Moreover, with Vietnam having a high percentage of under-20s, it guarantees a steady supply of working-age talent for many decades forward.
As highlighted in the article Key insights and trends for software developers in Vietnam 2024-2025, talented individuals in Vietnam increasingly seek careers in the IT sector, drawn by attractive salaries and growth opportunities. This trend aligns with the government’s strategic focus on developing IT talent, ensuring that Vietnam’s software development workforce continues to grow in both quality and quantity.
Vietnam’s IT Service Revenue
The revenue trend for the IT services industry in Vietnam is useful information. Vietnam has experienced continuous growth in IT service revenue over the years, and this upward trajectory is projected to continue. By 2024, the sector is expected to reach $2.07 billion, with a compound annual growth rate (CAGR) of 11.51% from 2024 to 2026. Looking further ahead, Vietnam’s IT service revenue is forecast to expand to $3.2 billion by 2028.
The growth in the IT Outsourcing segment of the four segments—Business Process Outsourcing (BPO), IT Consulting & Implementation, IT Outsourcing, and Other IT Services—is particularly noteworthy. Vietnam's IT Outsourcing revenues are projected to grow dynamically from $0.7 billion in 2024 to $0.83 billion in 2025, $0.98 billion in 2026, $1.13 billion in 2027, and $1.28 billion in 2028, almost doubling in size within a period of four years.
This growth comes through a possible commercial advantage of Vietnam as one of the most captive destinations for outsourcing. While global demand for IT solutions continues to increase with a shortage of qualified IT professionals, Vietnam has strategically positioned itself as a reliable and cost-competitive partner for businesses round the globe.
Given those trends, Vietnam is poised to further expand in software outsourcing and offshore software development. The advantage of providing high-quality IT services at affordable prices makes it remain an attracting country in meeting the global demand of IT.
Average Salaries and Rates for Software Developers in Vietnam
As noted earlier, Vietnam has a rich, highly skilled IT labor force and serves as a fast-growing destination for IT outsourcing. One major reason for Vietnam's attractiveness is the cost of IT talent.
The report mentioned the average gross salary for software developer in Vietnam is around $1,300 per month. Including various costs such as management costs, the average hourly rate for software developers in Vietnam is around $20 to $40. Naturally, these rates vary depending on the developer's level, years of experience, skills, and tech stack etc.
Like this, the salary and rates levels of developers in Vietnam are low when compared to Western countries. This feature opens the door for strong cost competitiveness of Vietnam and a cost-effective alternative to having local developers or outsourcing to local software companies in many parts of the world.
While labor costs remain subdued, the quality of software developers is on an upward trend in Vietnam, which reflects advances in the experience and skill levels of the workforce. By outsourcing to Vietnam, offshore development offers an acceptable blend of quality and expense because of the competitiveness of developers there.
The balance between level of technologies and IT workforce cost-effectiveness puts Vietnam in an advantageous position to be one of the leading software outsourcing and offshore development destinations. Companies can access skilled developers across a wide array of technologies at a fraction of the cost compared to Western markets.
Conclusion
Vietnam's IT sector is one of the most remarkable success stories. With over 100 million people and still growing, the median age in Vietnam is about 33 years, presenting a young workforce with a high proportion of working-age people. This demographic advantage, together with the fact that 55,000-60,000 computer science and IT-related students come in every year, provides long-term talent supply for IT professionals.
In 2024, approximately 560,000 experts are already working in IT-related fields, and this number is expected to increase more in the coming years. With both private and public initiatives churning out IT talent in droves, this human resource from Vietnam has indeed been highly developed to continue attracting attention globally.
The revenues of the IT Outsourcing industry of Vietnam are thus seen to surge and probably double in the next four years. It replicates the growing reputation of the country as one of the most favored destinations for offshore software development and outsourcing. With abundant skilled professionals at economical rates, Vietnam can well cater to the increasing demand for software development services across the globe.
Arguably, one of the most significant competitive advantages for Vietnam is cost-effectiveness. It making the country much cheaper compared to Western nations and even to many other outsourcing countries around the world. While it remains affordable, its quality and developer expertise are improving day by day to offer businesses a perfect blend of cost and capability.
For companies considering software outsourcing or offshore development, Vietnam really has much to offer. With the powerful workforce, rapid industry growth, and unmatched cost competitiveness, it is unparalleled for a variety of businesses in search of high-quality and scalable IT solutions.
If one considers outsourcing or offshore development, then no doubt Vietnam will also be among those worthy destinations to head to. Immense opportunities avail here, and their values as an IT outsourcing hub can only rise upwards in the time to come.
About ISB VIETNAM
As a leading software development and offshore services provider, we specialize in delivering high-quality and cost-efficient solutions for our partners for the past 20 years.
ISB Vietnam is proud to have a team of highly skilled software developers based in Vietnam, known for their technical expertise and commitment to excellence. Leveraging a vast network of developers both within Vietnam and across the globe, we are uniquely positioned to deliver tailored software development solutions that meet the diverse needs of our clients.
For any inquiries related to IT Outsourcing Solutions, we are the right partner.
Don’t hesitate to contact us to discuss how we can work together to make your project a success.
Key insights and trends for software developers in Vietnam 2024-2025
In recent years, Vietnam has been attracting attention as a destination for offshore development and software development outsourcing due to the growing global need for IT, rising labor costs and shortages of software developers.
This study will refer to the Vietnam IT Market Report 2024 - 2025 published by TopDev, a major IT human resources platform in Vietnam, and also examine characteristics and trends of software developers in Vietnam through ISB Vietnam’s perspective, as the company has been providing offshore software development outsourcing services from Vietnam for more than 20 years.
We hope this article will be helpful to people gathering information about Vietnamese software developers, software development outsourcing, and offshore development destinations.
Number and Quality of Software Developers in Vietnam
Vietnam has become well-known across the world for its abundant IT talents, particularly in software development. The Vietnam IT Market Report 2024–2025 published by TopDev stated that about 560,000 professionals work in computer science and IT-related fields. This number is increasing, with an addition of 55,000 to 60,000 students on average each year, enrolling in computer science majors and it-related fields. Consequently, Vietnam continues to see a boom in professionals with high-level specialized knowledge and practical experience in software development and IT.
Factors that account for this phenomenal growth:
- Government Policies: The Vietnamese government recognizes IT talent development as a national strategy by actively supporting the IT sector within national development plans.
- Competitive Remuneration: The IT and Tech industry in Vietnam has been recognized for paying above-average salaries compared to other industries. This financial advantage serves as a magnet for talents to pursue careers as software developers or work within IT companies.
These factors set the base for the high-quality and skilled talent within the industry and is a major contributor to the rapid growth of the technology industry in Vietnam.
Vietnam software developers are acknowledge for their work ethic and being highly skilled. Vietnam has consistently ranked among the top 10 countries for best offshore software development and outsourcing services due to the vast talent pool and competitive rates.
A few examples stand out:
- In the Global Services Location Index of Kearney, Vietnam came in sixth among the biggest countries for software outsourcing services in 2021.
- As per Accelerance's 2022 Global Software Outsourcing Trends and Rates Guide, Vietnam ranks at the second spot among its Southeast Asian peers when it comes to being a software outsourcing destination.
In fact, Vietnam's IT sourcing revenue has been experiencing significant growth and is projected to increase substantially from $700 million in 2024 to $1.28 billion in 2028, nearly doubling within just four years.
Such praise is a testament to the continuous rise in both the quality and quantity of software developers based in Vietnam, furthering its standing as a favored destination in global offshore software development and software development outsourcing.
Next, we will dive into the features that distinguish Vietnamese software developers and the most common Tech Stacks according to the report above.
Age Distribution, Years of Experience, and Level Distribution of Software Developers in Vietnam
Vietnam is a fast growing economy characterized by a youthful population, with an average age of 33 years. Such demographic trends are reflected in Vietnam's software developer workforce, largely shaped by the younger generation.
Age Distribution
As per estimates, in 2024, the age profile for the majority of Vietnamese software developers is 25-29 years of age, accounting for 29.3% of the total. Right after them comes the age group 20-24, which with 28.8% includes young adults. This means that over half or 58.1% of all developers in Vietnam fall into the 20s age group. The remaining proportions include 30-34 years (15.8%) and 35-39 years (10.2%).
While younger developers still dominate, the overall age distribution has moved upward gradually from 2022 to 2024. The proportion of developers who are 15-19 and 20-24 has decreased, while the groups of 25-29 years and 30-39 years have seen increases. This constitutes a maturing software development workforce with a growing number of experienced professionals.
Years of Experience
The same pattern is displayed in the skill levels of the developers. In 2024, most developers had 2 to 3 years of experience, at 28.8%, followed by those with 0 to 1 years of experience, at 22.1%. Together, developers with 0 to 3 years of experience account for 50.9% or around half of the total work force. After this, there is a consistent upswing of developers from midlevel to senior level: 4 to 5 years (18.4%), 6 to 7 years (11.7%), 8 to 9 years (7.9%), and 10 to 11 years (6.0%).
Although the first-year workers dominate the field of software development today, the steady mainstream growth of skilled personnel also indicates a transition of the developer workforce to a more competent level-suitably equipped to handle streaming, large-scale, complex projects.
Level Distribution
This maturity, however, is reflected in the current level distribution. In 2024, the junior tier made up 34% of developers and is the largest group. Next comes the middle-tier, with 30%, while the two groups put together account for 64% of the total developers. The number of fresher is reducing while the number of junior and middle is increasing, indicating that the overall skill level within the Vietnamese software development community is rising.
A Key Strength in Vietnam’s Software Development Industry
A steady rise in the average experience and skill level of developers, in addition to an annually increasing influx of tens of thousands of new IT professionals each year, is a major advantage for Vietnam. This development, thus, reinforces Vietnam's position as a top choice for software development outsourcing and offshore software development services.
Vietnam is soaring above expectations with a clash of youthful yet highly skilled developers ready to provide reliable yet cost-effective solutions for the clients, and the evolution of this young workforce should be considered testimony to the country's strength in the market for offshore software development.
Trends and Characteristics of Tech Stacks among Software Developers in Vietnam
Vietnamese software developers utilize a diverse range of tech stacks, each with distinct trends and preferences across different fields. Below, we delve into the most popular programming languages, frameworks, and technology categories based on their popularity among developers in Vietnam.
*The numbers in () indicate the popularity
JavaScript
JavaScript continues to be a leading programming language among developers in Vietnam. A significant development in 2023 was the introduction of "Bun (64.3%)," which quickly rose to prominence, overtaking established frameworks such as Node.js (48.2%), Angular (45.1%), and ReactJS (36.0%). Furthermore, TypeScript (32.9%) and Vue (31.4%) are also popular choices, highlighting JavaScript's adaptability within modern web development.
Java
In the realm of Java, Spring Boot (45.2%) leads as the top choice, followed by Hibernate (7.0%) and Struts (1.2%). These frameworks are preferred for their reliability and efficiency in building enterprise-grade applications, making Java a cornerstone for backend development in Vietnam.
Python
Python is widely used due to its varied frameworks like Django (35.1%), Pandas (31.0%), and Flask (19.1%). In areas like data processing and machine learning, libraries such as PyTorch (16.9%) and TensorFlow (11.4%) are among the top selections, reinforcing Python’s significance in AI development efforts. On an international scale, Python has earned recognition as the most favored programming language for 2024, resulting in increased demand.
Most popular programming languages in 2024
.NET/C#
In the .NET & C# space, .NET Core (46.2%), ASP.NET Core (37.0%), and .NET Framework (29.0%) dominate. While this category has seen little change in recent years, these frameworks remain central to enterprise and desktop application development in Vietnam.
PHP
In the landscape of PHP frameworks, Laravel stands out with considerable support from 60.5% of developers opting for it. It is followed by Symfony at 24.7% and CodeIgniter at 17.1%, illustrating that PHP remains relevant in crafting web applications.
Mobile Development
In mobile development, Java (50.2%) and Swift (30.5%) are the leading choices, enabling robust native application development for Android and iOS, respectively. Flutter (19.1%) and React Native (10.2%) also see significant adoption.
Database Technologies
MySQL (78.0%) remains the most widely used database technology, praised for its open-source reliability. Other popular options include SQL Server (59.9%) and MongoDB (36.1%), reflecting the diverse data management needs of Vietnamese developers.
DevOps and Cloud Platforms
Within DevOps practices, Linux reigns supreme with a substantial share of 76.5%, closely trailed by Docker at 52.7%. In terms of cloud platforms, AWS leads with a commanding presence of 38.3%, while Azure accounts for 25.2% and VMWare captures 17.1%. These tools play an essential role in enhancing modern development environments and ensuring they can scale effectively.
Detailed Tech Stack Data of Vietnamese Software Developers
All this data consists of breakdowns of some of the most popular technology stacks among Vietnamese software developers, namely, the browser, tools, frameworks, and platform that dominate in each category. According to the presented report, these statistics provide insight into the preferences and expertise of Vietnamese developers.
*The numbers in () indicate the popularity
- Javascript: Bun (64.30%), NodeJS (48.20%), Angular (45.10%), ReactJS (36.0%), Typescript (32.9%), Vue (31.4%)
- Java: Spring Boot (45.20%), Hibernate (7.00%), Struts (1.20%), Vaadin (1.20%)
- Python: Django (35.10%), Pandas (31.00%), Flask (19.10%), PyTorch (16.90%), TensorFlows (11.40%)
- .NET/ C#: .Net core (46.20%), ASP.Net core (37.00%), .Net framework (29.00%), ASP.Net MVC (16.50%), Xaramin (0.70%)
- PHP: Laravel (60.50%), Symfony (24.70%), CodeIgniter (17.10%), Yii (4.50%), CakePHP (4.00%)
- Mobile Development: Java (50.20%), Swift (30.50%), Flutter (19.10%), React Native (10.20%), Kotlin (3.80%)
- Database technologies: MySQL (78.00%), SQL Server (59.90%), MongoDB (36.10%), PostgreSQL (31.40%), Redis (21.90%)
- DevOps: Linux (76.50%), Docker (52.70%), Bash (11.90%), Kubernetes (10.30%)
- Cloud Platform: AWS (38.30%), Microsoft Azure (25.20%), VMWare (17.10%), Firebase (14.60%), Google Cloud Platform (8.60%)
Conclusion
This article has explored the various dimensions of Vietnam’s software developers, providing insights into its workforce, technical expertise, and evolving trends. Drawing from the Vietnam IT Market Report 2024–2025 and industry data, the following key points summarize Vietnam’s position in the global IT landscape.
Dynamically Growing and Evolving Workforce
Vietnam has a youthful and growing pool of software developers with many in the 20-29 age range. Because of a developing industry, the workforce is mostly composed of junior-level developers, with a gradual increase shown of mid-level and experienced developers. Government initiatives and much attention paid to IT education are driving this development.
Wide range of tech stacks
The effectiveness of Vietnamese developers with a range of programming languages and frameworks makes them distinguished not only on the commonly used technologies such as JavaScript and Python, but also for specialized tools for mobile development, cloud platforms, and DevOps. Developers are flexible enough to handle a variety of industry needs, the report emphasized, and have been able to embrace modern technologies and keep pace with recent trends.
An Excellent Outsourcing Destination
International rankings such as Kearney's Global Services Location Index and Accelerance's outsourcing reports highlight Vietnam's prestige for offshore software outsourcing. These rankings reaffirm that Vietnam is on the path to an eye-catching career in the global IT ecosystem.
About ISB VIETNAM
As a leading provider of software development and offshore services, we have specialized in delivering high-quality, cost-effective solutions to our partners for the past 20 years.
ISB Vietnam is proud to have a team of highly skilled software developers based in Vietnam, known for their technical expertise and commitment to excellence. Leveraging a vast network of developers both within Vietnam and across the globe, we are uniquely positioned to deliver tailored software development solutions that meet the diverse needs of our clients.
For any inquiries related to IT Outsourcing Solutions, we are the right partner.
Don’t hesitate to contact us to discuss how we can work together to make your project a success.