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$
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I will build or fix your python fastapi backend and rest API
Cynthia O.
About this gig
Need an API behind your web app, internal tool, or AI product?
I build and repair Python FastAPI backends. We agree on the routes, data, and expected responses before development. Each package includes source code, request validation, OpenAPI docs, tests for the agreed behaviour, and setup notes.
Basic: up to two simple endpoints, with no database or authentication.
Standard: up to four endpoints, one database, and one agreed authentication flow.
Premium: up to eight endpoints, one database, authentication, and Docker deployment preparation.
One endpoint means one HTTP method and route. Complex business rules, data migrations, payment systems, and external integrations need their own scope. Hosting, service fees, ongoing support, and wider security reviews are separate.
My portfolio includes backend work on EshiCare and the Meridian AI support project.
Send the routes you need, your current stack, sample inputs and outputs, and any existing errors. I'll confirm the scope and package before you order.
Get to know Cynthia O.
Cynthia O.
AI app fixes, Python FastAPI backends and MCP integrations
- FromNigeria
- Member sinceJul 2022
- Last delivery3 years
Languages
English
I help founders fix broken web apps, build Python backends, and connect AI assistants to their tools. I have 5+ years of software engineering experience across education, healthcare, and AI applications. My work includes FastAPI APIs, React and Next.js apps, and MCP integrations. You can see Meridian, my AI support project, and EshiCare in my portfolio. Send me the problem, what should happen, and any error message. I'll help you define the next step and the scope before you order.
My Portfolio
FAQ
What counts as one endpoint?
One HTTP method and route, such as GET /orders or POST /orders. Those two examples count as two endpoints. Complex business logic needs review even when it uses one route.
Can you fix an existing FastAPI project?
Yes. Send the failing route, expected response, error message, and reproduction steps. I'll review the existing code and confirm a repair scope before you order.
Is authentication included?
Standard and Premium include one agreed authentication flow. Social login, several identity providers, complex permissions, and security audits need a separate scope.
Will you deploy the API?
Premium includes Docker deployment preparation and setup notes. Live cloud setup and ongoing hosting need separate agreement. You own and pay for the hosting account.
What tests and documentation do I receive?
Each package includes tests for the agreed endpoint behaviour, FastAPI's OpenAPI docs, and local setup notes. We define expected requests and responses before development.
Can you build a complete SaaS backend?
That usually needs a custom scope with agreed workflows and milestones. These packages cover a bounded API module. Send the requirements so we can work out a realistic first delivery.
