• Coordinated Android authentication and navigation changes across 3 squads and 10+ business-critical updates spanning SSO, login, home, and list modules through multiple releases. • Improved release safety through Play Integrity-related updates, R8/ProGuard validation, dependency maintenance, runtime checks, and practical app/SSO hardening. • Supported production triage and mentored a junior developer through 4 formal 1:1 sessions plus ongoing delivery guidance. • Shipped React Native features with TypeScript, Expo, and NativeWind, reducing turnaround time for smaller tickets by roughly 50% (team estimate).

• Improved Android cold-start time by approximately 33-50% by parallelizing startup work and deferring non-critical initialization until after first interaction. • Resolved 30+ production crashes, ANRs, and performance issues using Crashlytics, Play Console, logs, and regression-focused tests. • Integrated and improved a physical BLE device flow for a field-worker app, transferring device-to-phone data, adding on-device logging, and decoupling connectivity behind an application-level Kotlin abstraction. • Built offline-first behavior with a local database as source of truth, batched WorkManager synchronization over unreliable networks, and local/remote conflict resolution. • Refactored major modules and added a mock-flavor validation flow that reduced coupling, QA blocking, and release delays.

• Implemented 10+ feature tickets for the Prixm social app across Android and native iOS, including feed rendering for a U.S.- based product and release support. • Extended Xamarin.Forms employee apps with screens and form workflows, integrating approximately 6 API endpoints and implementing 3-6 .NET Core CRUD endpoints.

• Launched native Android and iOS applications for about 200 early adopters using MVP, Clean Architecture principles, RxJava/RxSwift, and REST integrations.

• Developed four Android/iOS applications in a 5-person team, owning authentication, backend integration, five primary screens, and a QR scanner flow using Camera2/CameraX-related camera handling. • Reduced gym check-in time from over a minute to seconds by replacing manual ID validation; delivered each application in roughly one month and produced two multiplatform game prototypes.