Globo (Top 5 media company worldwide) - Recommendation platform serving 25M+ users/day. Boosted engagement 30%. Collaborated directly with Google on the Media Recommendations product.

GoodRx - Go & Python services powering the Gold subscription platform for millions of users. Grew subscribers by 2.3%.

B3 (Brazilian Stock Exchange) - Designed data infrastructure for a $20M cloud migration to AWS. Built a Python quality framework that raised data reliability by 90%.

cortex-browser - Browser perception layer for AI agents. Converts web pages into token-efficient semantic snapshots. Rust, MCP server.

Pipeline     Prune → Role Map → Collapse → Merge
Output       Compact accessibility tree with stable ref IDs
Reduction    90-95% fewer tokens than raw HTML
Transports   MCP stdio | Streamable HTTP + SSE

Key design decisions:

• 4-stage DOM pipeline - strips scripts, styles, hidden elements, then maps ARIA semantics, collapses wrappers, and merges siblings
• Stable ref IDs - hash-based refs survive DOM mutations, enabling reliable element interaction across snapshots
• Viewport-aware snapshots - marks off-screen elements, supports scroll navigation, and returns diffs instead of full re-snapshots
• Multi-tab state management - independent tab state with CDP connection pooling and DOM mutation observers

Pincer - A self-hosted, security-first AI assistant gateway. Single Go binary, zero runtime dependencies.

Messaging       Telegram | Discord | Slack | WhatsApp | Matrix | WebChat
LLM Providers   Anthropic | OpenAI | Gemini | Ollama
Security        AES-256-GCM encryption | Ed25519 skill signing | sandboxed tools
Protocols       HTTP | WebSocket | gRPC | MCP client | A2A server

Key design decisions:

• Sandboxed tool execution - process-level and container-level isolation for shell, file, HTTP, and browser tools
• Persistent memory - structured key-value store with immutable key protection and content-addressed hashing
• Human-in-the-loop - configurable approval modes per tool (auto / ask / deny)
• Smart context windowing - hash-based change detection to avoid redundant token usage