📍 Fortaleza, Brazil | 🔧 Senior Platform Engineer · Istio upstream contributor · Go & K8s operators
Active contributor to istio/istio. Filed #59567 (multi-port metrics merging in enablePrometheusMerge); design discussion with maintainers (@howardjohn, @keithmattix) led to acceptance of the additive prometheus.istio.io/scrape-targets annotation over deprecation. All 3 PRs from the implementation series are merged and ship in Istio 1.31:
- #59924 (merged) — annotation parsing + data model with backward-compat guarantees
- #59925 (merged) — concurrent fan-out in
handleStatswith OpenMetrics EOF handling - #60468 (merged) — integration tests for STRICT mTLS multi-container pods
Solves a real production failure mode previously without an upstream fix.
→ Why Istio's Metrics Merging Breaks in Multi-Container Pods — and How to Fix It
🔩 metrics-aggregator — Go sidecar for aggregating Prometheus metrics from multiple containers in a K8s Pod. The public artifact of the Istio #59567 contribution; production alerting and native OTel tracing (OTLP, W3C traceparent, Jaeger).
🧹 kube-janitor — Kubernetes controller that automatically classifies and garbage-collects stale resources using TTL annotations, expiry timestamps, owner references, and a resolver reference graph. Operator chops in Go.
⚙️ dotbabel — Model-agnostic governance toolkit for agentic CLIs (Claude Code, Codex, Gemini, Copilot) plus the @dotbabel/dotbabel npm package. CLI validators for skills-manifest checksums, spec schemas, PR spec-coverage gates, and instruction drift across CLAUDE.md / README.md / copilot-instructions.md.
🏆 SquadRanks (private) — Production football intelligence platform. Composite squad rankings from heterogeneous stats and prediction-market sources (Sofascore × Kalshi), engineered around data variety and veracity. Multiplayer prediction pools (bolão), multilingual (EN/PT/FR/ES). TypeScript + React + Vite + Go + PostgreSQL on Vercel + Fly.io + Neon.
Other Projects
🧠 kortex — CLI that compiles raw source material into a structured, interlinked Obsidian knowledge base. Go + Cobra.
⚔️ lamport — Go + Temporal cloud infrastructure pentesting tool orchestrating a 13-agent Claude AI pipeline across AWS/GCP/Azure/K8s targets.
📊 aws-scalable-metabase-deployment — Production-grade Metabase on EKS with Fargate, Karpenter, and KEDA. Real-world case study.
⚡ ami-update-automation — AWS Lambda detecting new EKS AMI versions and opening PRs across Terraform/Terragrunt/Pulumi/Crossplane repos.
🛡️ pentest-dashboard — Go web dashboard ingesting Shannon pentest reports, tracking security posture with REST API + Prometheus metrics.
🔗 shannon-reporter — CLI tool and GitHub Action bridging Shannon pentest reports into GitHub workflows.
🎯 pentest-lab — Deliberately vulnerable Go REST API for white-box + black-box exploit validation.
🎬 showreel — Script-driven demo video generator built on Remotion.
🩺 Cori (private) — Holistic health monitoring app. React Native + Go API + Python AI service.
⚽ Moneyballer (private) — Stats-based football scouting system. Python ELT + Go API + TypeScript/React.
📝 Why Istio's Metrics Merging Breaks in Multi-Container Pods — and How to Fix It
📝 Istio's Metrics Merging Was Built for a Simpler World. What Should Replace It?
📝 Scaling Workloads with the Big Savings Quartet: EKS, Fargate, Karpenter, and KEDA
📝 dotbabel: The Open Source Governance Layer for AI-Assisted Development
📝 dotbabel handoff: Portable Context across Claude Code, Codex, Copilot CLI, and Gemini CLI
Random Facts
- Taught English for 8 years — still the best debugging skill I have
- Will argue about football (the real one ⚽) with anyone
- Thinks about wormholes and quantum gravity more than is professionally useful
- Has kicked off Claude Code remote sessions from the gym more than once
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