Nathaniel Brion S.

I build iOS apps from idea to App Store: 10 years in software, 9 in mobile, 4+ with US companies, and Upwork clients who kept me on for two years or more. Some of what I've done: - GCash (the Philippines' biggest e-wallet): Face ID login, QR payments, partner mini-apps that take payments inside GCash, and fixes for critical production issues. - CircleIn (2.5 years, here on Upwork): a Discord-style community chat for students that feels instant, study-group matching, and a refactor with tests that made the app faster and easier to change. - Milagro (2 years, here on Upwork): set the team's code standards and CI/CD, so QA got new builds without waiting on developers, and fixed the hard bugs: real-time WebSocket failures and a crash inside a third-party SDK. - Nmblr: made a food-ordering app privacy-compliant (a consent manager wired to Google's consent tools), and added checkout, coupon and rewards features. - App Store review: rejections fixed for GCash and for my own apps, from screenshot rules to kids' app requirements. - 9 apps of my own live on the App Store, each taken from idea to launch: design, build, subscriptions, store listing and review. - Dinkmix, a live web app that runs pickleball open play for clubs, built with Claude Code on React and Supabase. I care about the code users never see. Wherever I join, I bring code reviews, tests and automated builds, and I fix root causes instead of patching symptoms. How I work: I learned the craft by hand over nine years of client apps. For my own newer apps, I direct AI coding agents and own everything around the code: product design, UI/UX, architecture, QA and automated tests, the store listing and launch. Every change is reviewed and tested before it ships. A good fit if you need an iOS app built and shipped, an existing iOS app finished or cleaned up, subscriptions and in-app purchases set up, or an App Store rejection fixed. If your product also needs a web app, I can build that too.