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Karan Yuvraj Singh
From India 05:42 AM (GMT+05:30)
$30/hr

Active over a week ago


Member since Feb 2026

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Fullstack Engineer

Full-Stack Engineer
Available for hire
Years of experience
3+ years
Experience level
Mid-level

I started as a frontend developer building user-facing products, but I kept running into the same problem: the UI looked great, but the system underneath was fragile. Forms would submit twice. Race conditions would corrupt data. APIs would timeout silently. So I stopped treating frontend and backend as separate worlds and started thinking like a full-stack systems engineer. At Trademarkia, I didn't just build an e-signing platform's UI—I owned the entire stack: React frontend with PDF rendering, Node.js APIs, PostgreSQL schema design, and S3 integration. When I implemented SSR for 30M+ pages, I had to think through the entire pipeline—cache invalidation on the backend, optimistic updates on the frontend, and race condition handling across both layers. Then at Clarisights, I shifted focus to backend-heavy work—building ETL pipelines processing 10M+ records/day, implementing circuit breakers and retry logic, and debugging distributed data consistency issues. But my frontend experience gave me an edge: I understood how backend decisions ripple through to the user. I knew how data freshness impacts UI trust. I knew how to design APIs that make the frontend's job easier, not harder. What makes me unique: I'm not frontend-first or backend-first—I'm a full-stack engineer who thinks in systems. I can architect a React component library, debug a distributed ETL pipeline, optimize database queries, and design REST APIs—all while keeping the end-to-end flow in mind. I care about correctness across the entire stack, not just my layer. I think in failure modes at every level—from UI race conditions to database deadlocks. I've proven I can ship production systems that handle real stakes—legal documents, financial data, and high-volume workflows. I'm looking for roles where full-stack thinking matters—where understanding the complete picture makes you more effective, not just more versatile. That's why your healthcare platform caught my eye.

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