Description

Backend developer specialised in FastAPI, API integrations, and data pipelines for SaaS startups, agencies, and small teams. Fixed scope, fixed price, async-first communication.

UK-based, native Portuguese speaker, working in English. Full overlap with European business hours.

What I specialise in:

- FastAPI backends — JWT auth, organisations, Stripe billing, webhook idempotency, PostgreSQL Row-Level Security.

- API integrations — Stripe, HubSpot, Notion, Slack, OpenAI, custom REST and GraphQL. I design for idempotency and retry from the start.

- Web scraping and ETL — async httpx, Scrapy, Playwright. Validated output to PostgreSQL or CSV.

- Migrations — Flask → FastAPI, dockerizing Python apps, breaking monoliths into focused services.

Stack: Python 3.11+, FastAPI, SQLAlchemy 2.x, Pydantic v2, PostgreSQL, Docker, Pytest, GitHub Actions.

How a project starts: you send a brief → I come back within 24h with a fixed scope, quote, and milestone plan → we only kick off when we agree on what "done" looks like.

Open-source: fastapi-stripe-starter (FastAPI MVP + Stripe) and scraper-pipeline-demo (async ETL pipeline) — both on GitHub.

Send me a brief in English or Portuguese and I'll come back with a proposal within 24 hours.

Industry field of expertise

Languages

Portuguese
Native or bilingual
English
Conversational
Spanish
Basic

Workplace preferences

Remote only

Primarily works remotely

Self-employed
Independent Python Developer
TECH
January 2024 - Today (2 years and 7 months)
London, United Kingdom
Independent work for early-stage clients across SaaS, agencies, and small teams. Focus areas: FastAPI backends, Stripe and third-party API integrations, web scraping and ETL pipelines. Stack: Python 3.11+, FastAPI, SQLAlchemy, PostgreSQL, Docker. Delivery in fixed-scope engagements with documented handover.
FastAPI Async Python Scrapy Python PostgreSQL