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$
USD
I will a fast and scalable backend API with fastapi or nodejs
Mohamed BTC
About this gig
I will build a fast, secure, and scalable backend API for your web application, SaaS, or mobile app using FastAPI/Python or Node.js/NestJS.
My backend services include REST API development, CRUD operations, authentication and authorization, JWT and refresh tokens, PostgreSQL database integration, API validation, error handling, role-based access control, and Swagger/OpenAPI documentation.
I can also integrate your backend with React, Next.js, or other frontend applications and build real-time features with WebSockets when required.
What you can expect:
Clean and maintainable code
Secure API architecture
PostgreSQL database integration
Authentication & authorization
Well-structured REST APIs
API documentation
Source code included
Clear communication throughout the project
Whether you need a small API or a complete backend for a SaaS product, feel free to contact me before ordering so we can discuss your requirements and choose the right package.
Get to know Mohamed BTC
Mohamed BTC
Full Stack Developer
- FromAlgeria
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, Arabic, French
Full-Stack Developer specializing in building modern, production-ready web applications. I work with React, Next.js, Node.js, NestJS, FastAPI, TypeScript, PostgreSQL, and Prisma to create responsive interfaces, REST APIs, authentication systems, dashboards, and complete SaaS products. Whether you need a website, custom web app, backend API, or help bringing your idea to life, I focus on clean code, reliable functionality, and a polished user experience.
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Other Software Development Services I Offer
FAQ
1. What technologies do you use?
I primarily use FastAPI and Python, or Node.js with NestJS/TypeScript. For databases, I mainly work with PostgreSQL and Prisma or SQLAlchemy depending on the project.
2. Can you build an API for my existing frontend?
Yes. I can build and integrate a backend API with React, Next.js, or another frontend. If you already have a frontend, you can provide the project details and I can develop the API around your existing requirements.
3. Can you implement authentication?
Yes. I can implement secure authentication systems including registration, login, JWT access tokens, refresh tokens, password hashing, and role-based authorization.
4. Can you work with PostgreSQL?
Yes. I can design and integrate PostgreSQL databases, including relationships, schemas, queries, validation, and database migrations.
5. Can you add features that are not included in the packages?
Yes. I can provide custom offers for larger or more complex requirements such as OAuth, WebSockets, Docker, additional endpoints, third-party API integrations, or advanced database functionality.
6. Should I contact you before placing an order?
Yes, especially for larger projects. Please send me your requirements, existing project if applicable, preferred technology, and any API or database specifications. I can then recommend the appropriate package or create a custom offer.
