André Freitas
Full Stack Software Engineer Porto, Portugal

I'm a backend engineer who gets things done — across the whole stack.

Currently building a crypto exchange at NBX. Before that: Beyond Pricing, Talkdesk, NDrive — and a hosting company I founded and sold.

Portrait of André Freitas
“Don't be a crab, lift others up!”— my life motto
André standing by the Douro with the Luís I bridge behind him
Porto · Ponte Luís IBased here, working with teams everywhere
01 — About

Where I've built things

02 — Skills

Backend at the core, comfortable everywhere

10+ years shipping real products — the last five in crypto and fintech, owning features end to end, from API design and data modelling to mobile-first UIs.

Backend & Data

Core

Backend since 2015 — streaming pipelines, event-driven systems and Postgres databases measured in terabytes.

  • Python
  • Django
  • FastAPI
  • Node.js
  • Kafka
  • RabbitMQ
  • PostgreSQL
  • Cassandra
  • MongoDB
  • Redis
  • Elasticsearch

Languages

  • Python
  • TypeScript
  • JavaScript
  • Rust
  • Go
  • Ruby
  • Elixir
  • Scala
  • Swift

Infrastructure

  • GCP
  • AWS
  • Kubernetes
  • Docker
  • Terraform
  • Ansible
  • Datadog
  • CI/CD

Frontend

  • React
  • Svelte
  • Vue.js
  • Micro frontends
  • TanStack Query
  • Testing Library
  • Capacitor

Practices

  • Event-driven architecture
  • Microservices
  • Domain-driven design
  • API design
  • TDD
  • Observability
Shipped
03 — Why full stack?

Backend since 2015. Full stack out of necessity.

When I joined NBX, the company needed someone who could also own the frontend, so I stepped up. I'm comfortable across the entire stack — but the backend is still where I'm most at home.

04 — Talks & videos

On stage and on camera

Os informáticos não são nerds TEDxFeira
Tooling for updating large tables in Postgres Porto Codes
Dapper, a large-scale distributed systems tracing infrastructure Papers We Love Porto
O embaixador da Google em Portugal AULP
05 — Side projects

Things I do for fun