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Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLO

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marcioecom/README.md

Hi, I'm Márcio Júnior 👋

Senior Backend & Web3 Engineer | Building Scalable Financial Systems

Professional Software Engineer with deep expertise in Golang, Node.js, and Distributed Systems. Currently focused on bridging the gap between traditional Fintech and Web3 infrastructure. Based in Brazil, working for the world.

🌐 marcio.run | 🔗 LinkedIn | ✉️ Email

🚀 Professional Focus

  • Backend Architecture: Specialist in Clean Architecture, Domain-Driven Design (DDD), and Event-Driven systems.
  • Web3 & Crypto: Experienced in building market-making infrastructure, exchange integrations (Ethereum/Solana), and DeFi protocols.
  • Performance: Building high-throughput microservices using Go and gRPC.

🛠 Tech Stack

  • Languages: Golang (Expert), TypeScript/Node.js, Rust (Smart Contracts), Python.
  • Infrastructure: AWS (S3, Lambda, SQS), Google Cloud, Kubernetes, Docker.
  • Databases: PostgreSQL, MongoDB, Redis, MySQL.
  • Web3: Solidity, Ethers.js, Solana Web3.js, Wallet Integration.

📊 Github Stats

GitHub Streak

🤝 Let's Connect

I'm always open to discussing Web3 opportunities, Backend architecture, or Open Source.

  • 💬 Ask me about: Go, Microservices, and Blockchain.
  • ⚡ Fun fact: When I'm not coding, I'm probably on the mats practicing Jiu-Jitsu.

Pinned Loading

  1. wayposts wayposts Public

    Load-test lab for a 20M-DAU feed design: hybrid fanout, transactional outbox, Redis timelines, Go services, and k6 saturation tests.

    Go

  2. echo echo Public

    Echo is a WhatsApp-first, multi-tenant customer support platform with an AI-powered support agent and a shared inbox for human operators.

    TypeScript

  3. waypoint-agent waypoint-agent Public

    WhatsApp flight-search agent in Python — LangGraph, Kiwi MCP, SQLite memory, FastAPI gateway.

    Python

  4. waypaper waypaper Public

    Animated wallpapers for macOS — native SwiftUI, local library, per-display settings. Wallpapers animados para macOS, sem conta e sem nuvem.

    Swift 2

  5. lupa lupa Public

    ETL e API REST sobre dados públicos do TCE-TO. Faz scraping de licitações, contratos e obras; alimenta painéis de BI.

    TypeScript 1

  6. permit-v2 permit-v2 Public

    Drop-in authentication for modern apps. React SDK, Node.js server SDK, Go backend. Everything you need to add auth to your project.

    TypeScript 3