Rahul Singh

I am a Backend-focused fullstack developer with three internships in Node.js/Express/MongoDB/PostgreSQL, and several self-built SaaS projects — MultiMail, HookLine, PulseGate, and SpendLens — showcasing async processing, multi-tenancy, and AI integration.

Backend Developer at E-Sutra Technology (2025-04 – 2025-09)

• Developed Node.js microservices with Express.js, improving API response times by 30%.
• Implemented JWT authentication and role-based access control for secure API endpoints.
• Containerized applications using Docker and deployed services on AWS EC2 via CI/CD pipelines.
• Integrated third-party APIs and implemented validation/error handling for reliable data processing.

MERN Stack Developer Intern at First Contact (2024-06 – 2024-11)

• Developed RESTful APIs using Node.js and MongoDB, including aggregation pipelines for analytics.
• Integrated Stripe payment gateway with secure transaction processing and error handling.
• Optimized frontend performance using React.js and Tailwind CSS, improving responsiveness by 25%.
• Collaborated in Agile sprints using Jira, delivering features and bug fixes on schedule.

Bachelor of Engineering in Computer Science & Engineering – Chandigarh University (2021-08 – 2025-04)

Secondary Education – Delhi Public School (2021)