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kalaiselvi velladurai

@kalaiselvivelladurai

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Full-stack developer building scalable web apps with React, Python, and microservices.

Singapore

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What I'm looking for

I’m looking to build scalable web apps end-to-end—REST APIs, microservices, and modern frontends—while working in Agile teams. I want ownership, clean code standards, and strong CI/CD + cloud deployment practices.

I’m a highly skilled Full Stack Developer with 11 years of experience building, deploying, and maintaining scalable web applications. I’m technically competent as a Software Engineer across both frontend and backend development, with a strong focus on clean, maintainable code.

I design and develop RESTful APIs using Spring Boot and Django REST Framework with Python, creating responsive, cross-browser frontends with React.js, Angular, and Tailwind CSS. I implement authentication and authorization with JWT and OAuth2, and I’ve optimized backend logic to reduce API response times by up to 20%.

I’ve worked extensively with CI/CD and deployment tooling, including Jenkins and container-based pipelines. I deploy containerized applications on AWS ECS using Docker and CI/CD workflows, and I collaborate in Agile environments to deliver high-quality releases.

Across multiple roles, I’ve migrated legacy codebases to microservices architecture, improved scalability, and supported automated testing and deployment for reliability. I’m especially energized by microservices, micro frontend architecture, and cloud-based architectures that help teams move faster with confidence.

Experience

Work history, roles, and key accomplishments

Full Stack Developer

Ridik Technology Services Pte Ltd

Jan 2025 - Nov 2025 (10 months)

Designed and developed scalable RESTful APIs using Spring Boot and Django REST Framework with Python. Built responsive React/Angular frontends with Tailwind CSS, optimized backend logic to reduce API response times by up to 20%, and deployed containerized services on AWS ECS via Docker and CI/CD pipelines.

Spring Boot Django REST Framework REST APIs React Angular Tailwind AWS ECS Docker CI CD Pipelines

Software Engineer (Full Stack)

Ellucian

Aug 2023 - Aug 2024 (1 year)

Developed full-stack modules using Java (Spring Boot), Python (Flask), and React.js, building reusable UI components and custom hooks to improve development efficiency. Implemented bulk edit/update workflows, infinite scroll, and metadata-driven detail pages, and used Jenkins automation to improve release reliability while migrating legacy code to microservices.

Spring Boot Python React UI Components hooks Automated Testing Jenkins

Software Engineer (Full Stack)

Hcl

Mar 2022 - Jul 2023 (1 year 4 months)

Designed end-to-end project architecture and layouts, implemented modules, and built authentication, then deployed builds to GCP by hosting artifacts in Cloud Storage. Guided the team on technical issues to support delivery.

Software Architecture Modules Authentication Google Cloud Platform (GCP)Technical Mentoring

Software Engineer (Full Stack)

Virtusa

Dec 2019 - Mar 2022 (2 years 3 months)

Implemented the B2C referral flow in shop and dotcom and increased Ember unit test code coverage from 9% to 60%. Worked on micro-frontend banking modules and redesigned UI modules including circular progress bar, core data, and Fiserv-related components.

Ember.Js Ember Unit Testing Code Coverage Optimization JavaScript Circular Progress UI Fiserve

Software Engineer (Full Stack)

Aspire Systems

May 2019 - Dec 2019 (7 months)

Developed CVV validation, transaction, history, and payment modules, including individual development of the full credit card module. Delivered card workflow functionality by implementing each module end-to-end.

Credit Card Module Development CVV Validation Transaction History

Software Engineer (Full Stack)

Cognizant

Mar 2016 - Apr 2019 (3 years 1 month)

Built profile, transaction history, and payment modules and handled production support for the application. Implemented SiteCatalyst analytics, fixed iOS/Android issues, and migrated the profile section from Ember to React.

React Ember.Js SiteCatalyst Analytics Production Support

Software Engineer (Full Stack)

Hexaware

Jun 2014 - Nov 2015 (1 year 5 months)

Worked on message catalogue and bulk proposal modules, designing pages using HTML5 and jQuery. Implemented the quick entry module using Ember.

HTML5 jQuery Ember.Js Quick Entry Module Message Catalogue Module Bulk Proposal Module

Software Engineer (Full Stack)

Cognizant

Nov 2011 - Jun 2014 (2 years 7 months)

Implemented data binding with getter/setter methods and created advanced UI widgets using D3.js. Developed dynamic views and templates using Ember.js to render interactive data-driven interfaces.

Ember.Js Data Binding JavaScript Getter Setter Implementation D3.Js Dynamic Views UI Development

Education

Degrees, certifications, and relevant coursework

Thanthai Periyar Government College of Engineering

Bachelor of Engineering, Electronics and Communication Engineering

2007 - 2011

Bachelor of Engineering in Electronics and Communication Engineering (ECE) studied at Thanthai Periyar Government College of Engineering in Vellore, affiliated with Anna University, from 2007 to 2011.