Senior Full-Stack
Developer for Hire
React.js & Next.js · Node.js & FastAPI · PostgreSQL · Microservices
I'm Ramesh Kumar Das. For 6.5+ years I've built web apps and SaaS products that have to stay up under real use — not just look good in a staging demo. Day to day that means React.js, Next.js, Node.js, and FastAPI, plus the databases and deploy path around them. At Kliky AI (Kuwait) I lead full-stack work on a live AI SaaS platform. If you need a senior developer who owns features from UI to API to release, message me.
Full-Stack Tech Stack
What I reach for when shipping a complete web product
What I Can Build For You
Practical full-stack work for startups and growing product teams
🚀 SaaS Platform Development
SaaS builds with accounts, Stripe or PayPal billing, multi-tenant setups, dashboards, and service APIs. Usually React or Next.js on the front with FastAPI or Node behind it.
⚡ REST API & Backend Systems
APIs and services in Node, Express, FastAPI, or Django — PostgreSQL or MongoDB, JWT auth, RBAC, and a CI/CD path so releases aren't manual.
🌐 Full-Stack Web Applications
UI in React or Next.js, APIs, schema design, login flows, and deploy on Docker plus AWS when you need the whole product in one place.
🔄 Real-Time Applications
WebSockets, Redis pub/sub, and event-driven pieces for chat, live dashboards, notifications, and collaborative tools under load.
🗄️ Database Design & Optimization
PostgreSQL and MongoDB schemas, indexes, query tuning, and Redis caching. On past projects that often meant roughly 25–35% better response times.
☁️ DevOps & Cloud Deployment
Docker, GitHub Actions, AWS (EC2, S3, Lambda), Nginx, and release automation. Similar setups cut deploy time by about 40% on previous work.
Work Experience
Teams and products where I've shipped full-stack systems for real users
WinstaAI — Production AI SaaS Platform (Kuwait)
I lead full-stack work on a live AI SaaS product — complex flows, payments, and microservices that customers use daily.
- Built full-stack features with React, Next.js, Node.js, and FastAPI under real traffic
- Split the backend into services with async queues, REST APIs, and third-party integrations
- Shipped JWT / OAuth 2.0 auth and Stripe / PayPal billing
- Released on AWS + Docker with CI/CD so deploys stay routine instead of risky
Dibbly — AI Video Translation Platform (India)
Shipped production web apps with React, Next.js, Node.js, and Django for enterprise clients.
- Cut response time by about 35% with API tuning and Redis caching
- Added WebSocket features that lowered server load by roughly 25%
- Tuned PostgreSQL / MySQL schemas and indexes for ~30% faster queries
- Brought deploy time down ~40% with Docker and CI/CD
Khantailor & PathHub (India)
- Built a custom-tailoring eCommerce shop with Stripe/PayPal and Docker/Nginx hosting
- Worked on a HIPAA-minded medical platform with controlled access and diagnostic reporting
- Improved UI feel by ~40% and cut API latency by about 20–30% through optimization
How I Usually Work
What you get when you hire me for full-stack delivery
✅ Built for production
I write for traffic, security, and the next person who has to maintain it. Staging demos aren't the finish line — stable releases are.
✅ One owner across the stack
Design, database, UI, API, and deploy can stay with one person. That cuts handoffs when you don't want a five-person squad for every feature.
✅ Numbers from past work
On earlier projects: about 35% faster APIs, ~30% better query times, ~40% shorter deploys, and ~25% lower server load after caching and tuning.
✅ Clear delivery rhythm
Sprints, milestones, and regular updates so you know what's shipping and when. Business goals beat shiny tech for its own sake.
Frequently Asked Questions
Questions I get from hiring managers and founders
Get in Touch
Full-time, contract, or freelance full-stack work — remote worldwide