Browse categories
Explore
Fiverr Pro
English
$
USD
I will build your custom rest or graphql API with swagger docs
Léo Guillaume
About this gig
Need a fast, secure and professional REST or GraphQL API for your app, mobile, website or SaaS?
I will build a custom backend API tailored to your exact needs clean, documented and ready to scale.
Unlike generic or copy-paste APIs, yours will be 100% custom, optimized for performance, with proper error handling, authentication and clear Swagger/OpenAPI documentation.
My main stack: AdonisJS + TypeScript for clean, type-safe code, PostgreSQL, JWT/OAuth, and Swagger for generated docs.
On request, I can build it in Python (FastAPI), PHP (Laravel), or other technologies just let me know!
Basic package ($50 - 5 days) includes:
- Up to 8 main endpoints
- Basic authentication (JWT or API keys)
- Database integration
- Error handling and validation
- Full Swagger documentation
- Complete source code delivered
- 3 revisions
Why choose me?
- Lightning-fast delivery for simple APIs
- Clean, well-commented code
- Future-proof and scalable architecture
- Human guidance on best practices (security, performance)
You get a professional, secure API not a quick script.
Ready to have a solid backend? Describe your needs and I'll take care of the rest!
Get to know Léo Guillaume
Léo Guillaume
Software engineer Web and IA
- FromFrance
- Member sinceJan 2022
- Avg. response time1 hour
- Last delivery1 month
Languages
English, French
Développeur fullstack avec près de 7 ans de pratique quotidienne et un Bac +5 en poche, je suis passionné par la création de produits web bien pensés, utiles et durables.
Si vous avez un projet web ambitieux, une interface à repenser, ou besoin d’un renfort technique impliqué et autonome, discutons-en avec plaisir !
Other Software Development Services I Offer
FAQ
What technologies do you use for the API?
Main stack is AdonisJS + TypeScript for clean, type-safe backend. Database: PostgreSQL or MongoDB. Auth: JWT/OAuth. Docs: Swagger/OpenAPI. On request, I can use Python (FastAPI), PHP (Laravel), or other tech – just tell me!
Do you provide the source code and full ownership?
Yes! You receive the full source code, complete ownership, and all rights to the API. No restrictions – you can modify, host, or extend it freely.
Can I test the API before final delivery?
Yes! You get a preview API in the Development milestone (Swagger UI or Postman) to test endpoints live. Full revisions are included to make sure it works perfectly for your use case.
What do you need from me to start?
Send your API goals, list of endpoints (or main features), auth needs, data models/examples, any preferred tech and inspiration APIs. If not ready, I’ll guide you step by step during Planning.
