I will build a scalable nodejs and nestjs backend API


About this gig
I build reliable, scalable backends that are ready for production, not just demos. As a senior software engineer, I develop backend APIs with Node.js and NestJS on PostgreSQL, the exact stack behind the multi-tenant SaaS platforms I have shipped. You get clean architecture, secure authentication, role-based access, input validation, and automated tests so your product stays stable as it grows. What I can build for you: - REST APIs with clear, documented endpoints - Authentication and authorization (JWT, role-based access) - Multi-tenant SaaS backends with full data isolation - Database design and optimization on PostgreSQL - Third-party integrations (Stripe, OpenAI, external APIs) - Automated tests and deployment support I work in clear milestones with a staging link you can review, full source code on GitHub, and setup documentation at handover. Message me before ordering so I can confirm scope and give you an accurate delivery time.
Get to know Eduarda F
Senior Software Engineer
- FromBrazil
- Member sinceSep 2026
Languages
English, Portuguese, Spanish
FAQ
Do you provide the source code?
es, you get the full source code on GitHub with commit history, plus setup documentation.
Which stack do you use?
Node.js and NestJS with PostgreSQL by default. I can adapt to your existing stack if needed.
Can you work with my existing backend?
Yes, I can extend, refactor, or add features to an existing codebase.
Do you write tests?
Yes, automated tests are included in the Standard and Premium packages.
