Rifat Sarker
Software Engineer · Backend & Full-Stack
I build robust backend systems, resilient APIs, and production web applications. My primary focus is on data integrity, sub-80ms P95 latency, query optimization in PostgreSQL, and clean end-to-end architecture with Node.js and Next.js.
How I Engineer Systems
Data Integrity First
Pessimistic row-locking (SELECT FOR UPDATE) and idempotency keys to eliminate race conditions and double charges.
Low-Latency APIs
Sub-80ms P95 responses through connection pooling, compound index tuning, and Redis caching layers.
Production Resilience
Docker multi-stage builds, HTTP-only JWT token rotation, structured logging, and zero-downtime restarts.
Selected Production Work
All ProjectsSingle-owner gadget ledger logging purchases, prices, warranties, and photos. Built with a sanitized public catalog, authenticated admin dashboard, and resilient PostgreSQL data layer.
High-performance e-commerce engine designed for high-concurrency checkout and low latency. Features cart persistence, resilient inventory validation, and modern UX.
Core Technical Stack
Detailed SkillsBackend & Systems
Databases & Caching
DevOps & Tooling
Frontend Architecture
Interested in working together?
I am available for remote contracts, full-time positions, and backend architecture consulting. Let's build something resilient.