I will build a rest API or integrate third party apis into your project


About this gig
Need to connect systems, build a backend, or expose your data via API? I'll make it happen.
I build clean, well-documented REST APIs and integrate third-party services into your existing projects. From simple CRUD endpoints to complex multi-service integrationsI've built APIs that handle millions of requests.
WHAT I BUILD:
- Custom REST APIs from scratch
- Third-party API integrations (Stripe, Twilio, OpenAI, etc.)
- Database APIs (PostgreSQL, MySQL, MongoDB)
- Authentication systems (JWT, OAuth)
- Webhook handlers and event systems
- Microservices architecture
TECH STACK:
Node.js/Express | Python/FastAPI | PostgreSQL | MongoDB | Redis | Docker
WHAT YOU GET:
- Production-ready API code
- Full endpoint documentation
- Postman collection for testing
- Database schema (if applicable)
- Deployment guide
- 14-day support
I write APIs that are fast, secure, and easy to maintain. Every endpoint is tested, documented, and follows REST best practices.
Send me your requirements, I'll scope it out and tell you exactly how I'd build it.
Get to know Alex M.
Providing People Possibility
- FromUnited States
- Member sinceMay 2012
- Last delivery5 months
Languages
English
My Portfolio
Other Software Development Services I Offer
FAQ
What information do you need to build my API?
Describe what the API should do, what data it handles, and what systems need to connect. Include any existing database schemas or documentation.
What languages/frameworks do you use?
Primarily Node.js/Express and Python/FastAPI. Both are production-proven, fast, and maintainable. I'll recommend based on your existing stack.
Can you integrate with [specific service]?
Most likely yes! I've integrated with Stripe, PayPal, Twilio, SendGrid, OpenAI, AWS services, and dozens more. Message me with specifics.
Do you handle the database too?
Yes. Standard and Premium include database design and setup. I work with PostgreSQL, MySQL, and MongoDB.
Will the API be secure?
Absolutely. I implement JWT authentication, input validation, rate limiting, and follow OWASP security guidelines.
Do you provide documentation?
Yes, always. Every API comes with endpoint documentation and a Postman collection so you can test immediately.
Can you deploy the API for me?
Premium includes deployment assistance. I can deploy to AWS, DigitalOcean, Railway, or your preferred platform.
What if I need changes after delivery?
Minor tweaks are included in your revision count. For larger changes, we can discuss a follow-up order.
Do you build GraphQL APIs?
Yes! Message me if you prefer GraphQL over REST. Pricing is similar.
Can you work with my existing codebase?
Yes. I can add endpoints to your existing API or integrate new services into your current project.

