Re-architected app to Bareflow, serving 30K monthly users across 200+ countries, and implemented offline-first sync via React Query.

Developed ExoPlayer native bridge and background geolocation uploads; improved delivery-tracking accuracy from 60% to 98%.

Delivered 92% test coverage on core flows (Jest, RNTL, Detox), reducing nightly crash rate by 45%.

Mentored four mid-level engineers, introduced Clean-architecture patterns and Redux Toolkit modules.

Used Profiling mechanisms to improve lagging and performance issues on lower phones, achieving 15 fps startup on 2 GB-RAM Android and 40% lower buffer times.

Integrated AppFlyer + Firebase funnels, driving a 25% MoM increase in referral installs.

Established LaunchDarkly feature-flagging & A/B tests, lifting engagement by 12%.

Automated CI/CD with GitHub Actions + Fastlane + Bitrise; slashed release cycle from 48 hrs to 3 hrs and cut regressions by 50%.

Launched client dashboard with WebSocket chat, cutting support tickets by 50% and raising DAU by 18%.

Implemented MVVM/Clean standards, linting & pre-commit hooks—boosted SonarQube quality score by 30%.

Integrated Crashlytics & Segment, enabling real-time error tracking and usage dashboards.

Delivered RN crypto-wallet with MFA and on-device encryption, achieving SOC-2 readiness and 99.8% uptime.

Built Node.js + WebSocket services for instant transaction updates, halved settlement latency.

Contributed to open-source RN crypto libraries.