End-to-end development of performant, scalable web applications — from REST APIs and database design to polished React/Next.js frontends. Built to handle real production load.
Design and build high-throughput backend systems with FastAPI, Node.js, and Express. Includes database optimization, N+1 elimination, caching strategies, and 30–50% latency improvements.
Architect and implement multi-tenant SaaS platforms with role-based access (RBAC), usage-based billing, tenant isolation, and automated onboarding workflows.