I will develop secure rest apis and API integrations


About this gig
Looking for a secure, scalable, and well-structured backend API for your application? You're in the right place.
I develop custom REST APIs and third-party API integrations using modern backend technologies and clean architecture. Whether you're building a web application, mobile app, SaaS platform, or internal business system, I deliver reliable backend solutions designed for performance, security, and future growth.
My services include:
- Custom REST API development
- Third-party API integration
- Authentication (JWT/OAuth)
- Database integration (PostgreSQL, MongoDB, MySQL)
- CRUD operations
- Webhooks
- Payment gateway integration
- API testing and debugging
- Error handling and validation
- API documentation
Why work with me?
- Clean, maintainable code
- Secure development practices
- Scalable architecture
- Fast communication
- Thorough testing before delivery
- Reliable post-delivery support
Every project is built with quality, performance, and long-term maintainability in mind. Contact me before placing an order so we can discuss the best solution for your project.
Get to know Yohannes B
Fullstack Developer
- FromEthiopia
- Member sinceJun 2026
Languages
English, Amharic
My Portfolio
Other Software Development Services I Offer
FAQ
What information do you need before starting?
Please provide your project requirements, API specifications if available, database details, preferred technology stack, and any documentation or reference examples.
Can you integrate third-party APIs?
Yes. I integrate payment gateways, authentication providers, AI services, email services, CRMs, cloud storage, communication platforms, and many other third-party APIs.
Do you develop custom REST APIs from scratch?
Yes. I build secure and scalable REST APIs tailored to your business requirements, including authentication, validation, database integration, and documentation.
Which technologies do you use?
I primarily work with Node.js, Express.js, Next.js, PostgreSQL, MongoDB, Prisma, Docker, and modern backend development practices.
Will I receive the complete source code?
Yes. All packages include the complete source code, and higher-tier packages also include detailed code comments and documentation.
Do you fix existing API issues or improve backend performance?
Yes. I troubleshoot API errors, optimize performance, improve security, refactor backend code, and add new features to existing projects.

