Matheus Martinho

I build mobile products end-to-end. Alone, and fast.

_{-23.5936, -46.7239  →  46.0569, 14.5058
São Paulo, Brazil  ·  destination: Ljubljana}

Developer from Brazil. I studied Computer Science for two years, then crossed the world to do a web development bootcamp in Vancouver — and kept learning by shipping ever since. I design, code, and launch the whole thing: from database schema to App Store screenshot.

I work with AI the way a pilot works with instruments: I make the calls, it handles the throughput. That workflow let me build and launch a full social app solo in months, not years.

When I'm not shipping: chess, astronomy, wildlife photography, and long runs around São Paulo.

My main product. Stadium check-in for Brazilian football fans — GPS-verified presence, live match data, predictions, rankings, and a social feed of who's actually at the game. Launched during the 2026 World Cup window. Live on both stores.

  

_{what's actually on my desk this month}

• Hardening The Pitch — security audit, geofence precision, performance under load
• Studying German. It's going. Slowly, but it's going.
• Trying to break my 5K record before the year ends

_{real bugs, real projects, real users on the other end}

Merged

• Kodus kodus-ai — fixed Bitbucket Data Center webhook payload parsing · #1714 ·
• Kodus kodus-ai — corrected the documented PR file limit from 200 to 2,000 · #1807 ·
• Open Food Facts explorer — Svelte UI + i18n fix in compare mode · #1777 ·
• Open Food Facts explorer — restored 59 message keys used in code but missing from en.json · #1855 ·
• Backstage community-plugins — New Frontend System support for the Jaeger plugin · #10330 ·

Open

• Backstage community-plugins — New Frontend System support for the Allure plugin · #10573 ·
• Backstage backstage — absolute URLs for README screenshots so they render off-repo · #35220 ·
• Cloudflare workers-sdk — Wrangler: recognise compound statement markers without surrounding whitespace · #15226 ·
• Excalidraw excalidraw — re-enabled flip tests for curves outside min/max points · #11897 ·
• Cal.com cal.diy — strip symbol characters from generated slugs · #29976 ·
• VTEX faststore — copy image and PWA manifest assets from public/ to build · #3451 ·
• Storyblok monoblok — CLI fix: TypeScript/JSON compiler-options loading via jiti · #760 · plus test coverage for the Astro SDK · #759 ·
• Dynatrace backstage-plugin — fixed a config schema bug that blocked app startup, with regression tests · #432 ·
• Evolution API — guard non-string mimetype before image check in Meta integration · #2691 ·
• The Nature Conservancy animl-frontend — fixed a cross-user state leak on sign-out in a wildlife camera-trap platform · #489 ·