Available for freelance projects

Nandakumar Venkatesan

Frontend Developer | UI Developer | Web Developer

Modern Websites & Web Applications That Look Great and Work Seamlessly.

I build modern, responsive web applications and help businesses improve, test, fix, and maintain their digital products.

Frontend Development • UI Development • Web Development • Software Testing

  • Angular development
  • UI development
  • Responsive websites
  • REST API integration
  • Software testing & QA
  • Bug fixing & maintenance
Start a ProjectView My Work
LinkedIn nandakumarv3011@gmail.com +91 8754288471

How I help

What I Can Help You With

One developer for building, improving, testing, and maintaining modern web applications.

Build

Modern websites and web applications.

Design

Responsive and user-friendly UI experiences.

Test

Manual and automated testing for web applications.

Fix & Improve

Bug fixing, maintenance, UI improvements, and application enhancements.

Services

What I can build or fix for your business

Freelance web development, UI development, software testing and maintenance — with Angular and modern frontend as the core specialization.

Angular Development

Build scalable, responsive, maintainable Angular web applications using modern frontend practices.

Frontend Web Development

Develop fast, responsive, user-friendly web interfaces using HTML, CSS, JavaScript, TypeScript and modern frameworks.

UI Design & Development

Create modern and responsive website interfaces focused on usability, visual quality, and cross-device compatibility.

React Development

Build modern React-based frontend applications and interactive user interfaces.

Node.js Development

Develop supporting backend functionality and web solutions using Node.js.

WordPress Development

Create and customize professional WordPress websites for businesses and personal brands.

Responsive Web Development

Build responsive, mobile-friendly websites using Bootstrap and modern CSS practices.

Manual Testing

Functional, UI, usability and compatibility testing with clear test cases, execution and defect reporting.

Automation Testing

Automated test suites for web applications to improve coverage, reliability and regression efficiency.

Web Application Testing

End-to-end validation of web applications across browsers, screen sizes and user workflows.

Test Automation & Quality Assurance

Quality assurance practices, regression suites and defect verification to keep releases stable.

Bug Fixing & Website Maintenance

Identify, troubleshoot, verify and resolve issues across websites and web applications — plus ongoing maintenance.

Software Testing & QA

Comprehensive software testing services to identify functional, UI, usability, compatibility, and regression issues before they reach users.

  • Manual Testing
  • Functional Testing
  • UI Testing
  • Regression Testing
  • Cross-Browser Testing
  • Responsive Testing
  • Web Application Testing
  • Bug Identification & Reporting
  • Test Case Creation
  • Test Execution
  • Defect Verification
  • Quality Assurance

Automation Testing

Automated testing solutions for web applications to improve test coverage, reliability, and regression testing efficiency.

  • Playwright
  • Cypress
  • Selenium

Bug Fixing & Maintenance

Identify, troubleshoot, verify, and resolve issues across websites and web applications.

  • UI Bugs
  • Functional Bugs
  • JavaScript / TypeScript Issues
  • Angular Issues
  • React Issues
  • Responsive Issues
  • Cross-Browser Issues
  • API Integration Issues
  • Regression Issues
  • Existing Application Maintenance

Need a Bug Fixed or Application Tested?

Start a Project

Freelance categories

Development, UI and testing capabilities

Pick the category that fits your project — or combine them for end-to-end delivery.

Web Development

  • Angular
  • React
  • Node.js
  • WordPress
  • Bootstrap

UI Development

  • Responsive UI
  • Web Design
  • Component Development
  • Accessibility

Software Testing

  • Manual Testing
  • Functional Testing
  • Regression Testing
  • UI Testing

Automation Testing

  • Playwright
  • Cypress
  • Selenium

Maintenance & Bug Fixing

  • Bug Fixes
  • Troubleshooting
  • UI Issues
  • Performance Improvements
  • Maintenance

Featured projects

Enterprise web applications built with Angular at the core

Case-study style highlights of frontend work delivered on large-scale products.

Featured projectMay 2025 – Present

Roche Diagnostics – LightCycler® PRO

UI Developer · May 2025 – Present

Enterprise Web Application | Medical Software

An enterprise-grade medical software platform designed to deliver accurate real-time PCR results.

  • Angular 14
  • TypeScript
  • DevExtreme DataGrid
  • OWC
  • HTML5
  • CSS3
  • SCSS
  • Plotly.js
  • Jasmine
  • Karma

Contributions

  • Developed scalable and responsive web interfaces.
  • Implemented new UI features and enhancements.
  • Improved application usability.
  • Resolved UI defects and functional issues.
  • Developed and maintained unit tests.
  • Improved frontend code quality and maintainability.
  • Worked with enterprise UI components and data visualization.
  • Applied responsive design and frontend best practices.
Enterprise solution2021 – 2025

Archon ETL & Archon Data Store (ADS)

UI Developer · 2021 – 2025

Enterprise ETL & Data Archival Platform

An enterprise data management and archival solution designed to analyze metadata, connect with various legacy systems, and support Extract, Transform, and Load (ETL) workflows into archival storage through Archon Data Store (ADS).

ETL to archival workflow

  1. Legacy Systems
  2. Metadata Analysis
  3. Extract
  4. Transform
  5. Load
  6. Archival Storage
  7. Retention & Purge
  • Angular 14
  • TypeScript
  • Angular Material
  • HTML5
  • CSS3
  • Flex Layout
  • WCAG
  • Chart.js
  • ngCharts
  • mxGraph

Why me

Why Clients Choose Me

Real enterprise frontend experience, applied to your website or web application.

6+ Years of Experience

Professional experience building and maintaining real-world web applications.

Frontend Specialist

Strong expertise in Angular, TypeScript, JavaScript, HTML and CSS.

Responsive & User-Friendly

Interfaces designed to work smoothly across desktop, tablet and mobile devices.

Clean & Maintainable Code

Focus on quality, maintainability, testing and modern frontend practices.

Existing Website Support

Can troubleshoot, fix, improve and maintain existing applications.

Development + Testing

One partner for building, testing, fixing and maintaining modern web applications.

About me

Frontend & UI Developer building web experiences that work

Hi, I'm Nandakumar — a Frontend & UI Developer with 6+ years of experience building responsive, scalable, and user-friendly web applications.

Specialized in

  • Angular
  • TypeScript
  • JavaScript
  • HTML5
  • CSS3
  • Responsive UI
  • REST API integration

Also experienced with

  • React
  • Node.js
  • Bootstrap
  • WordPress
  • Modern web development

What I work on

  • New website development
  • Web application development
  • UI development
  • Responsive design
  • Existing application improvements
  • Bug fixing
  • Maintenance

6+

Years Experience

Angular

Specialist

Frontend

& UI Development

Freelance

Available now

Education

Bachelor of Engineering – Mechanical Engineering

Vidhya Mandhir Institute of Technology, Erode

2014 – 2018CGPA: 6.87

Start a Project

Skills

Core stack and technical toolkit

Grouped by how they are used day to day — from primary frontend expertise to testing, delivery, and accessibility standards.

Primary skills

  • HTML5
  • CSS3
  • JavaScript
  • TypeScript
  • Angular
  • Web Design
  • Web Development

Secondary skills

  • React.js
  • Node.js
  • WordPress
  • Bootstrap

AI-assisted development

  • GitHub Copilot
  • ChatGPT
  • Claude

Used to accelerate engineering work — never as a replacement for engineering expertise.

  • Feature development
  • Code generation
  • Debugging
  • Bug fixing
  • Unit test generation
  • Code refactoring
  • Code analysis
  • Technical documentation

Additional Technologies

  • Angular Material
  • Tailwind CSS
  • Bootstrap
  • RxJS
  • NgRx
  • Ionic
  • jQuery
  • SASS
  • DevExtreme DataGrid
  • Plotly.js
  • Chart.js

Testing & Quality Assurance

  • Manual Testing
  • Automation Testing
  • Playwright
  • Cypress
  • Selenium
  • Functional Testing
  • Regression Testing
  • UI Testing
  • Web Application Testing
  • Cross-Browser Testing
  • Responsive Testing
  • Test Case Creation
  • Defect Tracking

Testing & Code Quality Tools

  • Jest
  • Jasmine
  • Karma
  • Stryker Mutation Testing
  • ESLint
  • SonarQube

Development

  • Git
  • GitHub
  • GitLab
  • JIRA
  • Docker
  • Jenkins
  • CI/CD

Accessibility

  • WCAG
  • Responsive Design
  • Cross-Browser Compatibility

Experience

Professional Experience

Enterprise frontend experience that backs up every freelance project I take on.

  1. May 2025 – PresentCurrent

    Frontend / UI Developer

    HCL Technologies Limited

    Frontend development for enterprise Angular applications — UI development, REST API integration, unit testing, code quality and defect resolution.

  2. January 2021 – April 2025

    Frontend Developer

    Platform 3 Solutions Private Limited

    Frontend development and UI implementation, API integration, accessibility, unit testing, Docker/Jenkins CI/CD, defect resolution and application improvements.

  3. June 2019 – September 2020

    Web Developer

    Nalam Healthcare IT Solutions Private Limited

    Frontend development, backend integration, functional testing and issue resolution.

Testimonials

What Our Clients Say

Short feedback from the people I've built, tested and maintained web products for.

“The Angular dashboard was delivered on time, worked well across devices, and the UI issues we had for months were finally fixed.”
POProduct OwnerEnterprise Web Application

Angular Development

“Clear communication, clean code and quick turnaround. Our existing website was improved without breaking anything.”
FNFounderSmall Business Website

Website Development

“The automated Playwright suite gave us confidence in every release — regressions are caught before users see them.”
QMQA ManagerAutomation Testing Engagement

Automation Testing

Book a Free Call

Prefer to pick a time instead of waiting for a reply? Book a 20-minute call.

Ready to Get Started?

Have a project in mind or need help with your website? Contact me directly on WhatsApp and let's discuss your requirements.

Book / Contact on WhatsApp
Replies within a few hours No obligation, no spam

Awards

Recognition for delivery and excellence

  1. Excellence Award

    2022

    Platform 3 Solutions Private Limited

    Recognized for outstanding performance in developing a product for sale within a short timeframe.

  2. Customer Miles Award

    June 2026

    HCL Technologies Limited

    Recognized for customer excellence, quality delivery, and contribution to project success.

Have a Website to Build, Test or Fix?

From frontend development and UI implementation to manual testing, test automation, bug fixing, and maintenance — let's build a better web experience.

Start a ProjectContact Me

Contact

Let's Work Together

Tell me what you're building, what needs to be fixed, or what you'd like to improve.

Email Menandakumarv3011@gmail.comCall Me+91 8754288471LinkedInNandakumar Venkatesan

Your message goes straight to my inbox — I usually reply within 24 hours.