I've built scalable backend services for SaaS platforms, hotel ordering, payment processing, and real-time communication as a freelance Senior Backend Engineer.
I design reliable payment flows with idempotency, database locking, and recovery mechanisms, and build asynchronous workflows with RabbitMQ and Redis.
At Altoros, I developed production backend services for healthcare and delivery/logistics systems, improving database queries, reliability, scalability, and performance.
Across 7+ years in Node.js, NestJS, TypeScript, PostgreSQL, and microservices, I've delivered APIs, business logic, distributed architecture, and containerized deployments for fintech, SaaS, and enterprise projects.
