I design and build secure, scalable backend APIs for fintech, e-commerce, and SaaS products — using Laravel, Django, or Flask depending on your stack.

What's included: • RESTful API design and implementation, built for high-concurrency and clean versioning • Database schema design (PostgreSQL/MySQL) with optimized queries and indexing • Secure authentication and role-based access control • Payment gateway integration (Stripe, Razorpay) with reliable webhook handling • Clean, documented, production-ready code following SOLID principles

I've built this kind of infrastructure for production systems including a POS-linked payment ledger and a Stripe-integrated multi-tenant ticketing platform — full case studies at synkn.app/case-study.

Best fit if you need: a new API built from scratch, an existing API refactored for scale, or a payment integration done right the first time.