Karthik Venkatesan

I’m a Full Stack Developer with 3+ years of experience building scalable, secure, high-performance web applications in regulated fintech, with hands-on ownership across React.js/Next.js frontends and Node.js/NestJS/FastAPI backends. I focus on performance, reliability, and clean API design—especially when applications must stay compliant and dependable.

At Remitbee, I’ve delivered measurable improvements and earned 3× Employee of the Quarter (Q4 2024, Q2 2025, Q3 2025). I implemented a Redis write-through caching strategy for high-traffic read-heavy endpoints, reducing response time from ~2s to ~200ms (10× improvement), and designed 70+ GraphQL queries and mutations with Apollo Server/Client to improve typed data fetching and API efficiency.

I also build practical AI features that integrate with real workflows. I designed an in-house RAG system in HRMS using Pinecone to enable semantic search across HR policy documents, and I built an AI chat interface (LangChain + FastAPI + MongoDB) that helps employees query HR policies and workflows—reducing repetitive HR ticket volume.

Beyond functionality, I care deeply about developer experience and observability. I architected a company-wide design system (Next.js, TypeScript, Sass), led a Next.js 12 → 14 migration with zero production downtime, created a 30+ component Storybook library, and implemented end-to-end correlation tracing on Datadog APM to reduce MTTR for production incidents. I’ve also mentored 4 interns through code reviews and architecture guidance, and I continue to value scalable systems and thoughtful engineering practices.