Sarthak Singh

I am a full‑stack developer with hands‑on experience building resilient backend systems, scalable APIs, and real‑time features for high‑traffic applications. I prioritize reliability, performance optimization, and clear engineering patterns such as layered routing and controller–service–repository designs.

At RedDoorz I architected backend modules for a hotel POS ecosystem, built a fault‑tolerant inventory system, deployed multi‑layer auth and RBAC controls, and integrated WebSocket channels to reduce latency and operational issues. My work reduced stock mismatches by 30%, unauthorized access attempts by 40%, and average API response time by 18%.

I also deliver production‑grade frontends and end‑to‑end features, using React and performance techniques to cut redundant renders and improve load times. I enjoy collaborating on code quality, accessibility, and scalable architectures that support significant user and data growth.