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sarvanan User

@sarvananuser

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Full Stack Developer specializing in MERN, scalable apps, and secure JWT payments with Razorpay.

India

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What I'm looking for

I’m seeking roles in startup/product teams where I can own end-to-end features, build scalable MERN apps, and focus on performance and security—JWT/RBAC, optimized databases, and reliable payment integrations with strong CI/CD.

I’m a Full Stack Developer focused on building scalable MERN applications for real users—across 4 production projects supporting 1,000+ users. I specialize in JWT authentication with RBAC, Razorpay payment integrations, and performance-focused backend/frontend work, including a 35% overall performance improvement and 99.9% payment success.

In my projects, I’ve engineered a 17-table MySQL relational schema with normalization and indexing, integrated Razorpay with webhooks and idempotency keys for reliable failure recovery, and improved responsiveness through AJAX, lazy loading, and pagination. I’m currently working as a Junior Full Stack Developer on end-to-end delivery (requirements to production) with unit testing (Jest 50%+ coverage) and aim to bring that same reliability and optimization mindset to startup/product teams.

Experience

Work history, roles, and key accomplishments

Current

Junior Full Stack Developer

Current

Freelance

Jan 2025 - Present (1 year 5 months)

Delivered four end-to-end full-stack projects from requirements to production, supporting 100+ concurrent users per project. Optimized database performance with indexing and query analysis, wrote unit tests with Jest (50%+ coverage), and maintained zero production bugs through code reviews and debugging.

MERN Stack REST APIs Jest Git Github