Production Node.js and NestJS backends, APIs, and integrations
I design and implement maintainable backend systems with Node.js, NestJS, TypeScript, PostgreSQL, REST APIs, authentication, payments, document workflows, background processing, and third-party integrations.
Good fit for
• New APIs and backend services
• Existing codebases that need architecture or reliability improvements
• SaaS, fintech, marketplace, and workflow products
• Payment, identity, banking, document, and operational integrations
Relevant delivery experience
I have built financial infrastructure, healthcare communication workflows, real estate marketplace systems, SaaS products, and digital-asset platforms with production APIs and third-party integrations.
What you can expect
Clear scope, practical data design, maintainable TypeScript, tested endpoints, incremental delivery, and transparent progress updates. I can take ownership from requirements and architecture through implementation, deployment, and production handover.