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I will develop custom rest API with python fastapi, flask and database integration
ProgrammingTech
About this gig
Hello:
I will develop secure, scalable REST APIs using Python, FastAPI or Flask. I build CRUD endpoints, authentication, database integrations, JSON services, third-party API connections, webhooks, validation and documentation. Get clean, tested and maintainable backend API solutions tailored to your application.
Service:
- Custom REST API development
- Python REST API
- FastAPI development
- Flask API development
- RESTful API architecture
- Backend API development
- JSON API development
- CRUD API development
- API endpoint development
- API versioning
- JWT authentication
- API authentication
- Role-based access
- API authorization
- Input validation
- Secure API configuration
- Error handling
- Request validation
- Response validation
- API security improvements
- Third-party API and Payment API integration
- Webhook development
- External service integration
- API data synchronization
- File upload API
- API testing
- Swagger/OpenAPI documentation
- API debugging
- API performance optimization
- PostgreSQL API
- MySQL API
- SQLite API
- Database integration
- SQLAlchemy integration
- Database CRUD
- Database querying
- Data validation
- Pagination
- Search/filter APIs
Why Choose Me?
- API-focused development
- Modern Python stack
Thanks!!!
Get to know ProgrammingTech
ProgrammingTech
Python Developer Automation Web Scraping and REST API Specialist
- FromUnited Kingdom
- Member sinceSep 2026
Languages
English, Portuguese, Korean, Hindi, Arabic
I’m a professional Python developer specializing in custom Python scripts, web scraping, workflow automation, data processing, API integration and REST API development. I build reliable, scalable solutions for businesses, startups, agencies and developers—from automation and public web-data extraction to backend APIs, database integration and custom software utilities. My approach combines clean code, structured development, testing, debugging, performance optimization and clear documentation to turn complex requirements into practical, maintainable solutions.
Other Software Development Services I Offer
FAQ
What do you need before starting?
Do provide me all the API requirements, expected endpoints, data structure, authentication needs, database requirements, integrations, example requests/responses and deployment environment if known.
Can you fix an existing REST API?
Yes. Provide the relevant source code, API documentation and error details. I can investigate bugs and implement fixes within the agreed project scope.
Can you test the API?
Yes. I can test endpoints, request validation, responses, error conditions and other agreed functionality using appropriate testing tools and methods.
Can you add pagination and filtering?
Yes. For suitable datasets, I can implement pagination, filtering, searching and sorting functionality according to the API requirements.
Can you build webhook functionality?
Yes. I can create suitable webhook endpoints for receiving events from compatible external services and processing the received data.
Can you build a REST API from scratch?
Yes. I can design and develop a custom REST API from your requirements, including endpoints, business logic, validation, database integration, testing and documentation.
Do you use FastAPI?
Yes. FastAPI is one of my primary choices for suitable modern Python REST API projects, especially where performance, type validation and OpenAPI documentation are important.
Can you develop APIs with Flask?
Yes. I can build suitable REST APIs using Flask, including routes, request handling, validation, database connectivity and API documentation.
Can you connect the API to a database?
Yes. I can integrate suitable APIs with databases such as PostgreSQL, MySQL or SQLite depending on your application's requirements.
Can you integrate a third-party API?
Yes. I can integrate documented third-party APIs and handle requests, responses, authentication, data transformation and appropriate error handling.
