Software Engineer
Breno
Xavier
Building tools at the intersection of AI systems, native applications, and platform infrastructure.
Based in Brazil / Available for remote work
Featured Project
Notably
A case study in local-first design
Rust core with Tauri shell. Local-first Whisper transcription with Metal acceleration. Real-time audio processing via Core Audio FFI. No cloud, no subscriptions — your data stays yours.
Explore the projectOther Work
02
gemini-mcp
Bridge Claude to Gemini CLI
MCP server enabling Claude Code to delegate tasks to Gemini for large context processing. Open source.
RandomPicker
Decision making made fun
iOS/macOS app for random selection with customizable wheels and lists. Published on App Store.
Infrastructure & Tooling
03Claude Code Tooling
AI-assisted development infrastructure
3 custom MCP servers, 18+ slash commands, 8+ skills, event-driven hooks. Meta-programming capabilities including skills that generate skills. Powers 5-10x velocity gains.
Self-Hosted CI/CD
GitHub Actions infrastructure
Mac Mini + MacBook Pro runners with shared sccache on Cloudflare R2. Power-aware scheduling via Hammerspoon. Supports Rust, Swift, and multi-platform builds.
Experience
04A decade of shipping products across mobile, web, and systems programming.
unspun
iOS LeadFitOS 3D body scanning with LiDAR. Built AI-powered garment measurement extractor (pgvector, 90% accuracy). 11+ Cloud Functions, Shopify/Stripe integrations.
Pitstop
iOS/Android LeadFleet diagnostics platform with OBD-II and Bluetooth integration