Kuldeep Sen cover
Kuldeep Sen
Kuldeep Sen

Senior Full-Stack Developer | Node.js | React.js | TypeScript | MERN | AWS | PostgreSQL | MongoDB

Open to offers · Member since 30 Sep 2026
Location
Indore, India
Desired salary
550–1000 USD/monthly
Work preference
Hybrid / Full Time, Part Time, Contract, Freelance, Temporary
Experience level
Senior

About

Professional summary

I’m a Senior Backend / Full-Stack Developer with around 5 years of experience building and deploying scalable web applications, SaaS platforms, and backend systems.

My strongest expertise is in Node.js, Express.js, TypeScript, JavaScript, MongoDB, PostgreSQL, React.js, and REST APIs. I specialize in backend architecture, secure authentication, database design, business logic, third-party integrations, and production deployments.

I’ve worked with JWT/OAuth2, RBAC, Redis caching, real-time communication, payment integrations such as Stripe, AWS services including EC2, S3 and Rekognition, and deployment tools such as Docker, Nginx, PM2, GitHub Actions, and CI/CD.

I focus on building systems that are maintainable, secure, and ready to scale. My experience includes API performance optimization, database indexing, caching, microservices, modular backend architecture, and troubleshooting production issues.

I’ve worked on products across e-commerce, education, healthcare, social platforms, payment systems, and business applications. I’m comfortable owning backend development end-to-end or working as part of an existing engineering team.

I’m currently looking for remote opportunities where I can contribute as a Senior Node.js / MERN / Backend Developer and take ownership of real product and engineering challenges.

Notice period: Immediate

Skills

23 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Backend Developer (Contract) Ranav Technologies

I work on backend development for an early-stage startup product under a formal contractual agreement.

I design and develop backend APIs, database architecture, authentication, and core business logic. I collaborate on the product through development, deployment, and launch.

Node.js Developer Parkhya Solutions Pvt. Ltd.

I led and mentored five developers, delivering technical training and guidance across multiple project implementations while maintaining code quality and development best practices.

I architected and deployed microservices on AWS EC2 using API Gateway, JWT-based authentication, Nginx as a reverse proxy, and PM2 for process management. I established CI/CD pipelines with GitHub Actions for automated integration and production deployments.

I developed REST APIs for high-traffic applications, optimized slow database queries, and implemented Redis caching to improve response times. I also integrated Stripe one-time payments and webhooks, Socket.IO real-time functionality, OAuth 2.0 authentication, and Redis-backed API rate limiting.

Associate Node.js Developer Infinity Genesis Techso Pvt. Ltd.

I worked as an Associate Node.js Developer, contributing to backend web application development.

My experience focused on Node.js-based development and API-oriented application work.

Web Developer Piecodes Pvt. Ltd.

I contributed to the development of full-stack web applications using Node.js, React.js, and MySQL.

I assisted with migrating a monolithic system to a microservices architecture to improve scalability and deployment flexibility. I also implemented role-based access control and API-level security measures.

Education

Learning history

Sagar Institute of Technology & Science, Bhopal

B.Tech, Computer Science Engineering

Bachelor of Technology in Computer Science Engineering. CGPA: 7.34.

Samrat Ashok Technological Institute, Vidisha

Diploma, Information Technology

Diploma in Information Technology. CGPA: 7.5.

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