Senior mobile engineer with 7+ years building Flutter applications for global consumer products across e-commerce, fintech, mobility and food delivery.https://kelvengalvao.comenhttps://kelvengalvao.com/blog/an-agent-that-returns-a-tested-prhttps://kelvengalvao.com/blog/an-agent-that-returns-a-tested-prA Dart framework that turns a ticket's requirements and definition of done into acceptance criteria, then holds the PR until a validator has driven the app and attached screenshots and recordings.Mon, 21 Sep 2026 00:00:00 GMTai-agentsarchitecturetestingdarthttps://kelvengalvao.com/blog/face-recognition-that-never-leaves-the-devicehttps://kelvengalvao.com/blog/face-recognition-that-never-leaves-the-deviceDojoEasy suggests who's in a class photo. The model runs in the browser, the face templates stay on the instructor's device, and two brothers in the same gi shaped the matching logic.Sun, 20 Sep 2026 00:00:00 GMTface-recognitionprivacytypescripthttps://kelvengalvao.com/blog/four-caches-between-a-photo-and-the-screenhttps://kelvengalvao.com/blog/four-caches-between-a-photo-and-the-screenOur crash rate on older Android phones was 10% before the SKIMS x NIKE drop. This is how the app handles product images now, from the CDN URL down to the disk cache.Sat, 19 Sep 2026 00:00:00 GMTflutterperformancememoryhttps://kelvengalvao.com/blog/flutter-ci-21-minutes-to-7https://kelvengalvao.com/blog/flutter-ci-21-minutes-to-7Step timings pointed at 304 Flutter engines booting per run, caches the tag builds could never read, and a staging job that compiled the same Dart twice.Fri, 18 Sep 2026 00:00:00 GMTflutterciperformance