• Hi!
    I'm Vignesh Ajay

    Full Stack Developer crafting scalable web applications across the MERN stack, AWS & DevOps.

    Download CV

About Me

Who Am I?

Hi, I'm Vignesh Ajay — a Full Stack Developer with 4+ years of experience building scalable web applications using React, Node.js, and Express.js. I'm proficient in Docker containerization, AWS cloud deployment, and delivering end-to-end solutions across the MERN stack while adhering to agile methodologies.

I specialize in designing REST APIs, role-based access control, authentication, and payment gateway integration. I work with MySQL, PostgreSQL, MongoDB, and Firebase, and have delivered production-ready features for AI, fintech, geospatial analytics, and enterprise SaaS products.

Full Stack Development

Backend & APIs

AWS Cloud & DevOps

Frontend Engineering

What I do?

Here are some of my expertise

Full Stack Development

End-to-end full-stack web applications using React, Next.js, Node.js, and Express.js.

Backend & APIs

REST APIs, authentication, role-based access control, and payment gateway integrations.

State Management

Modern data handling with Zustand, Redux, and TanStack Query for real-time workflows.

Cloud & DevOps

AWS deployment (VPC, EC2, Lambda, ECS) with Docker, Kubernetes, Jenkins, and Argo CD.

Database Design

Scalable data models with MySQL, PostgreSQL, MongoDB, and Firebase.

Testing & Quality

Reliable code through Jest, Vitest, and React Testing Library.

Years Experience
Hands On Projects
Companies Worked
K+ Users Supported
My Specialty

My Skills

Proficient in building end-to-end solutions across the MERN stack with modern JavaScript frameworks, cloud deployment on AWS, and containerized DevOps workflows.

React / Next.js

90%

Node.js / Express

90%

JavaScript / TypeScript

85%

SQL / NoSQL Databases

85%

AWS & Docker

80%

NestJS / Microservices

80%
Education

Education

University College of Engineering - BIT Campus, Trichy

July 2016 - Sep 2020

Graduated with a Bachelor of Engineering in Computer Science, building a strong foundation in programming, data structures, databases, and software engineering.

  • Tamil
  • English
Experience

Work Experience

SDE-2 (Full Stack Developer) - Scalereal Technologies Nov 2023 - Jun 2026

Mentored and led a team of 4 junior developers, driving Agile sprint execution, conducting code reviews, and enabling their successful onboarding to client projects through technical guidance. Built scalable frontend and backend solutions for AI, fintech, geospatial analytics, and enterprise SaaS products. Designed and implemented REST APIs, role-based access control (RBAC), authentication, and real-time workflows. Optimized application performance to efficiently handle large datasets and high-concurrency workloads. Delivered end-to-end features from requirements gathering to deployment, collaborating with cross-functional teams to build secure, scalable, and user-focused applications that contributed to successful MVP launches and user growth.

MERN Stack Developer - Weboconnect Technologies Sep 2022 - Aug 2023

Worked as both a solo Full Stack Developer and a collaborative team member to build scalable web applications for transportation, SaaS, and EdTech platforms using React, Node.js, Express.js, and MySQL. Designed and developed secure, role-based applications with RESTful APIs, multi-tenant architecture, video-based assessment workflows, live location tracking, digital wallet integration, and online payment processing. Integrated third-party services including Firebase and payment gateways to enhance functionality and user experience. Successfully onboarded and delivered 2 new client projects within a year while collaborating with cross-functional teams to deliver production-ready solutions supporting 500+ users.

Full Stack Developer - Lentera Technologies Nov 2020 - May 2021

Developed full-stack web applications using React, Node.js, Express.js, and MySQL for enterprise SaaS products. Built scalable solutions for warranty management, learning management systems (LMS), online assessments, and administrative workflows. Designed and implemented REST APIs, secure authentication, role-based access control (RBAC), interactive dashboards, and data visualizations to improve business insights and user experience. Contributed to cloud-ready microservices architecture and optimized application performance to support high-concurrency workloads of over 100,000 users while collaborating with cross-functional teams in an Agile environment.

My Work

Recent Work

PWA Learning App

PWA Learning Lab
React 19 TypeScript Vite Tailwind CSS 4 Express 5 Node.js Service Worker Cache API IndexedDB Docker

A Progressive Web App showcasing offline support, installability, service workers, IndexedDB, and API caching with a React frontend and Express backend.

View on GitHub

Node.js Concurrency Demo

Concurrency Dashboard
Node.js Express TypeScript React Vite Tailwind CSS

Interactive dashboard demonstrating Node.js concurrency — Worker Threads, Child Processes, and Cluster — with live visualizations of how CPU-heavy tasks run in parallel.

View on GitHub

Kafka Learning Platform

Apache Kafka Learning Sandbox
React TypeScript Vite Node.js Express KafkaJS Apache Kafka (KRaft) Schema Registry Docker

Hands-on learning sandbox for Apache Kafka — create topics, produce/consume messages, run transactions, DLQ/retry flows, and stream processing through a real cluster with a visual React UI.

View on GitHub

BullMQ Learning Dashboard

Job Queue Management with Redis
Node.js TypeScript Express BullMQ Redis ioredis React Vite Server-Sent Events (SSE) Docker

A full-stack job queue management dashboard demonstrating BullMQ with Redis — create jobs for email, reports, and notifications, and watch live status transitions (waiting → active → completed/failed) with real-time progress bars via SSE.

View on GitHub

Redis Learning App

Redis Concepts Explorer
Node.js Express Redis (ioredis) Docker Swagger UI

REST API to explore all Redis data types and real-world patterns like caching, rate limiting, distributed locking, and leaderboards.

View on GitHub

Pub-Sub Playground

Real-time Event-Driven Demo
React Vite Node.js Express Server-Sent Events (SSE)

A real-time Publish/Subscribe demo app — publish messages to a topic and every subscriber receives them instantly via SSE, no refresh needed. Built to visualize how event-driven systems like Kafka or Redis Pub/Sub work.

View on GitHub

View all repositories

Get in Touch

Contact

vigneshajay.va@gmail.com

Thoothukudi, Tamilnadu, India

+91 9629867909

LinkedIn Profile