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Solving problems
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aferreira44/README.md

Hi, I'm André 👋

Senior Full-Stack Engineer | 🚀 Fast Delivery & Automation | ☁️ Cloud-Native Architect

Python Go Node.js TypeScript AWS Docker PostgreSQL MongoDB React Serverless Linux

Senior Software Engineer with 10+ years of experience building and maintaining systems in production environments across backend, frontend, and cloud infrastructure. My work focuses on reliability, scalability, and fast execution — designing and delivering complete solutions that teams can operate, maintain, and evolve with confidence over time.

Professional Experience

I've worked across fintech, mobility, logistics, and cloud-based platforms, delivering backend services, APIs, full-stack applications, and workflow automation. My experience includes both long-lived systems that require stability and rapid MVP development for new products.

Comfortable operating close to infrastructure and understanding trade-offs involving performance, cost, scalability, and operational complexity. I deliver complete solutions from planning to deployment, working collaboratively with engineering, product, and operations teams.

Tech Stack: Python · Go · Node.js · TypeScript · AWS · Docker · Serverless · CI/CD · PostgreSQL · MongoDB · DynamoDB · Cloud-native architectures · Distributed systems · Full-stack development

Current Projects

  • Bitcoin Fintech Platform - Building secure, user-focused applications for bitcoin saving and investment
  • 🚀 Token Launchpad - Web3 platform for secure token launches and DeFi protocols
  • 🤖 AI Automation Tools - Exploring LLM-based workflow optimization and automation
  • 📚 Technical Writing - Sharing knowledge on distributed systems, cryptography, and cloud architecture

Open Source Work

  • 🔑 Cryptography101 - A comprehensive guide to cryptography, from basics to practical applications
  • 🔒 Bitcoin Core REST API - REST API for Bitcoin Core RPC methods written in TypeScript and NestJS

What I'm Doing

  • 🛠️ Building production-grade systems with Go, Python, and TypeScript
  • ☁️ Designing cloud-native architectures on AWS with serverless and containerized workloads
  • 🔐 Exploring blockchain systems, cryptographic protocols, and smart contracts (EVM)
  • 🤖 Experimenting with applied AI and LLM-based automation tools
  • 📚 Continuously learning Rust and advanced distributed systems patterns
  • 🌱 Contributing to open source and sharing knowledge through code and documentation

GitHub Activity

GitHub Contribution Graph

Connect

Website LinkedIn Twitter GitHub

Coding Challenges

  • 🥋 Codewars - Sharpening algorithmic skills
  • 💻 HackerRank - Solving programming challenges
  • 🏋️ Exercism - Learning through practice
  • 🔓 HackTheBox - Security challenges
  • 🧩 LeetCode - Interview prep and algorithms

Philosophy

"Ship reliable systems that last. Optimize for team velocity, operational simplicity, and long-term maintainability. Make pragmatic technology choices based on real constraints — not trends."

More About Me
  • Strong advocate for open source software and knowledge sharing
  • Passionate about solving complex distributed systems challenges
  • Love optimizing for both developer experience and production reliability
  • Believe in writing code that others can understand, operate, and evolve
  • Active problem solver on Codewars, LeetCode, HackerRank, HackTheBox
  • Enjoy learning new languages and exploring different programming paradigms

Pinned Loading

  1. bitcoin-core-rest-api-nestjs bitcoin-core-rest-api-nestjs Public

    A REST API to execute Bitcoin Core JSON-RPC methods

    TypeScript 2

  2. bitcoin-core-node-setup bitcoin-core-node-setup Public

    Resources for setting up and managing a Bitcoin node using Ansible and Terraform

  3. bitcoin-code-samples bitcoin-code-samples Public

    A bunch of bitcoin related code samples

    Python

  4. learn learn Public

    MDX 1 1

  5. exercism-solutions exercism-solutions Public

    My Exercism.io solutions

    Go 2

  6. nodejs-api-postgres-starter nodejs-api-postgres-starter Public

    Boilerplate for Node.js API (Node.js + Express + PostgreSQL + Docker + Swagger)

    JavaScript 3 1