I will build reliable api integration, backend development and automations
Top Rated
Gig Summary
About this gig
Your app is only as good as the backend behind it.
I am Rayyaan, a full stack developer with 5 years of experience in backend development and api integration using Node.js, TypeScript and Python. I build the server side that keeps your web or mobile app fast, secure and stable.
What I do:
- REST API development from scratch, clean and documented
- Third party api integration: Stripe, PayPal, OpenAI, WhatsApp, Twilio, shipping and CRM tools
- Authentication with JWT, OAuth and social login
- Database design: PostgreSQL, MongoDB, MySQL, Supabase
- Fixing and extending an existing backend someone else built
- Deployment to AWS, GCP, Railway or your server
Every API ships with:
- Postman collection and clear docs so any developer can use it
- Proper error handling, so failures return useful messages instead of crashing
- Security basics done right: rate limiting, validation, hashed credentials
Have a frontend that needs a backend? A mobile app that needs an API? Two systems that refuse to talk to each other? That is exactly what I do.
Message me what you are building and I will send you a clear plan and quote before you order.
Get to know Rayyaan Nauman
Full Stack Developer and AI Specialist
Top Rated
- FromPakistan
- Member sinceJul 2022
- Avg. response time1 hour
- Last deliveryabout 5 hours
Languages
English, Spanish, German
My Portfolio
Other Software Development Services I Offer
FAQ
I already have an app, can you just build the backend for it?
Yes, most common job I get. Send me what the app needs to do and I will design the API around it, whether the frontend is web, mobile or both.
Can you connect a third party service to my existing system?
Yes. Stripe payments, WhatsApp messages, OpenAI features, shipping rates, CRM syncing, most services with an API. If it has documentation I can connect it, and if it has bad documentation I have dealt with worse.
Where will the API be hosted and who pays for it?
Your account on AWS, GCP, Railway or a VPS, so you own the infrastructure and control the bill. Small APIs often run close to free. I set it all up and hand over access.
Will other developers be able to work with your API later?
Yes, that is the point of the docs. Every delivery includes a Postman collection and endpoint documentation so any developer or an AI agent can pick it up
Is the API secure?
Every build includes validation, rate limiting, hashed credentials and proper auth. Security is in the foundation, not an add on.
9 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
M mike741

United Kingdom
Ongoing collaborationI’ve now worked with Rayyaan on several projects and he’s been excellent each time. He’s reliable, detail-oriented and always delivers high quality work on time. Communication is smooth and professional. I highly recommend him for any technical or data driven projects.
$400-$600
Price
6 weeks
Duration
Helpful?M mike741

United Kingdom
Ongoing collaborationRayyaan has been fantastic to work with on this project. He communicates clearly, keeps me updated at each stage and is very committed to achieving the best possible results. The quality of his work exceeded expectations. He took the time to fine tune and validate thoroughly, ensuring the outputs met...
$1,000-$2,500
Price
8 weeks
Duration
Helpful?G 
getpat

United States
Working on the solution this is a part of the overall project that is in the works.
$100-$200
Price
6 days
Duration
Helpful?T tobywisener

United Kingdom
Amazing to work with this guy, great developer and flexible with requirements.
$200-$400
Price
3 days
Duration
Helpful?C 
cosy_web

Algeria
Wouldn't hesitate to work with him again anytime soon !
$50-$100
Price
5 days
Duration
Helpful?
9 reviews for this Gig
| (9) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
M mike741

United Kingdom
Ongoing collaborationI’ve now worked with Rayyaan on several projects and he’s been excellent each time. He’s reliable, detail-oriented and always delivers high quality work on time. Communication is smooth and professional. I highly recommend him for any technical or data driven projects.
$400-$600
Price
6 weeks
Duration
Helpful?M mike741

United Kingdom
Ongoing collaborationRayyaan has been fantastic to work with on this project. He communicates clearly, keeps me updated at each stage and is very committed to achieving the best possible results. The quality of his work exceeded expectations. He took the time to fine tune and validate thoroughly, ensuring the outputs met...
$1,000-$2,500
Price
8 weeks
Duration
Helpful?G 
getpat

United States
Working on the solution this is a part of the overall project that is in the works.
$100-$200
Price
6 days
Duration
Helpful?T tobywisener

United Kingdom
Amazing to work with this guy, great developer and flexible with requirements.
$200-$400
Price
3 days
Duration
Helpful?C 
cosy_web

Algeria
Wouldn't hesitate to work with him again anytime soon !
$50-$100
Price
5 days
Duration
Helpful?
