work and receipts

A fintech needed an open-banking payments SDK that scaled, converted, and that client teams could integrate fast.

Led the mobile side: owned the public API design and developer experience, rewrote the payment UX, and lifted critical-flow test coverage from 38% to 90%. Wired AI-assisted orchestration (Claude Code, MCP) into production workflows to cut integration friction.

• Scaled to 1M+ open-banking transactions per day
• Abandoned transactions down 12%, churn down 17%
• 99.95% crash-free
• Integration time down 40%, with fewer on-call escalations

shipped with teams at: Amazon, eBay, Temu, Revolut, Ryanair, Papa John's, lastminute.com

Obsidian's million-plus Android users had no fast path to capture a note from outside the app.

Built a Glance-powered Android-to-TypeScript interop module for one-tap capture and contributed a new Intent API, working directly with founder Steph 'kepano' Ango on technical direction and rollout.

• Shipped to 1M+ users across Google Play and GrapheneOS
• New Intent API and Quick Settings tiles, with the security review and community support that ship them

Bootstrapped consumer apps win on craft and store optimization at zero ad spend.

Founded and ran a self-funded mobile studio end to end: design, build, ASO, growth, monetization, and release tooling from scratch.

• My Clock: 0 to 3,000 monthly active users at $0 paid marketing
• Widgets (Clock Widget for Home Screen): 4.7 stars, featured by GadgetHacks, Beebom, and TechCrunch
• Cut app size from 700MB to 38MB while growing content 30x