Sayeem Khan

Backend software engineer with 2+ years of professional experience building high-availability, production-grade systems across fintech and healthcare SaaS. Currently at Kona Software Lab, where I develop and maintain payment infrastructure for bKash handling 100K+ daily transactions cutting payment failure rates by 18% and slashing query response times by 40% through targeted optimizations. My stack centers on Node.js, PostgreSQL, and RESTful API design, with hands-on experience integrating complex third-party APIs including Stripe, Xero, and Plaid. I've also worked in Java-based microservice environments under HIPAA-compliance constraints, so I understand what it means to build systems where correctness and security aren't optional. I'm a final-year CS student at AIUB (CGPA 3.8/4.0) and have been working in production environments since my third year so I bring both academic grounding and real shipping experience. Looking for a remote backend engineering role where I can contribute to a product that scales, work with an opinionated and pragmatic team, and keep growing across distributed systems and API-heavy architecture.