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$
USD
I will develop rest API with fastapi and postgresql
Rodrigo Mendes
About this gig
I build FastAPI backends that are fast, scalable, and production-ready from day one.
Why choose me
- I've developed real-world backend systems handling multi-source data at scale (YAPXAT, MediTrack)
- Your API will have proper architecture, not just "code that works"
- Security-first approach: input validation, SQL injection prevention, proper authentication
What you get:
- RESTful API with FastAPI (Python's fastest async framework)
- PostgreSQL database design with proper relationships and indexes
- Type-safe models with Pydantic validation (catches bugs early)
- Automatic interactive API documentation (Swagger UI)
- JWT authentication + role-based authorization
- Proper error handling with meaningful HTTP status codes
- Database migrations with Alembic (easy updates)
- Async/await for high-performance concurrent requests
- Background tasks with Celery/Redis (Premium)
- Docker deployment ready
Perfect for:
- SaaS product backends
- Mobile app APIs
- Data-heavy applications
- Microservices architecture
- MVP to production scaling
Tech stack:
FastAPI SQLAlchemy Alembic Pydantic PostgreSQL Redis Docker Pytest
Message me before ordering to discuss your requirements and timeline.
Get to know Rodrigo Mendes
Rodrigo Mendes
Python Backend and Automation Expert , FastAPI, Web Scraping, REST APIs
- FromPortugal
- Member sinceNov 2025
- Avg. response time1 hour
- Last deliveryabout 5 hours
Languages
English, Portuguese, Spanish, French
I build production-ready Python systems that save you time and money.
100% Job Success • Fast Response • Real-World Experience
What I deliver:
→ FastAPI backends with PostgreSQL (secure, scalable, documented)
→ Web scrapers that handle anti-bot systems and keep working
→ Data automation pipelines (scraping → processing → delivery)
→ REST APIs with proper authentication and error handling
Tech: Python • FastAPI • PostgreSQL • Playwright • BeautifulSoup • Docker • React
MSc Computer Engineering (University of Porto 2026)
Message me before ordering.
FAQ
What's included in the source code delivery?
You receive the complete FastAPI application with all dependencies listed (requirements.txt), database models, API routes, Pydantic schemas, and Alembic migrations. The code includes type hints, docstrings, and is ready to run locally or deploy to any platform.
What counts as 'one endpoint'?
One endpoint = one HTTP method + path combination (e.g., GET /users/{id}). CRUD operations on one resource typically need 4-5 endpoints (create, read, update, delete, list). I'll confirm the exact count during our initial discussion before starting.
Which databases do you support?
I work with PostgreSQL (recommended for production), MySQL, and SQLite (good for MVPs/testing). All packages include SQLAlchemy ORM with proper migrations via Alembic. Premium package can include Redis for caching.
Do you provide deployment assistance?
Basic and Standard packages include deployment documentation. Premium package includes hands-on deployment assistance to your chosen platform (AWS, DigitalOcean, Heroku, Railway, etc.) and basic DevOps setup.
Does the API include authentication?
All packages include JWT-based authentication. Standard+ includes role-based access control (RBAC). I implement industry-standard security practices: password hashing with bcrypt, secure token handling, and proper CORS configuration.
What if I need changes after delivery?
Each package includes revisions during development. After delivery, minor bug fixes within 14 days are free. Feature additions or significant changes are handled as new orders. I'm available for ongoing maintenance contracts.
Do you include tests?
Basic package includes manual testing and validation. Standard includes unit tests for business logic. Premium includes comprehensive test suite (unit + integration tests) with pytest, achieving 80%+ code coverage.
