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juniorrosul/README.md

Madson Verdi Junior

Senior Backend Engineer · Go/Golang · Distributed Systems · Microservices

São José, SC — Remote · Available for CET/UK overlap · Open to work

About

9+ years building backend systems in production. For the last 5+ years, focused on Go microservices, REST APIs, and event-driven architectures at scale.

At Mercado Livre, worked on an 18-service ecosystem handling ~10,000 req/min, led an AI initiative architecting a RAG system with Claude API, and acted as Engineering Mentor introducing Spec Driven Development (SDD) across the team.

Stack

Core

Go gRPC Kafka PostgreSQL Redis

Cloud & Infra

AWS Kubernetes Docker Terraform

Observability

OpenTelemetry Prometheus Grafana

Auth & Security

OAuth2 JWT

Experience highlights

  • Mercado Livre — Senior Software Engineer (Nov 2024 – Apr 2026)

    • ~10k req/min across Go/Node.js microservices; event-driven with BigQueue/Fury + DLQ patterns
    • AI Tech Lead: RAG system (Claude API) enabling natural-language querying across 18 internal services
    • Engineering Mentor: introduced Spec Driven Development (SDD) to improve team output consistency
    • Security Guardian: owned vulnerability remediation via Dependabot and container scanning

  • Galley Solutions — Backend Engineer (Aug 2022 – Jun 2024)

    • Go/Node.js microservices (12 services, Kafka); Auth0 OAuth2/OIDC; Terraform on AWS
    • Founded and operated the Security Committee: Dependabot, container scanning, secure dev practices

  • B2B SaaS — Automotive Analytics — Tech Lead / Backend Engineer (Dec 2020 – Aug 2022)

    • Led architecture of a vehicle analytics platform; Go REST APIs with GCP Pub/Sub and DLQ patterns

Contact

LinkedIn Email

📍 São José, SC, Brazil · Remote · UTC-3

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