Delivered a full greenfield rebuild of decade-old iOS App, boosting monthly revenue to $1M and achieving a 4.8+ AppStore rating.

Implemented a data-driven, schema-governed API contract that streamlined page feed rendering and reduced future development time by thousands of engineering hours.

Engineered a high-frequency WebSocket consumer capable of processing 100s of market updates per second at 60fps, while minimizing battery and CPU overhead.

Established iOS coding standards with MVVM+R architecture (UIKit/SwiftUI), enabling parallel development for 10+ engineers, reducing onboarding time, and improving code consistency.

Improved developer velocity by simplifying module boundaries, removing unnecessary dependencies, and enforcing a scalable architectural pattern across teams.

Built a resilient networking layer with retry logic, offline queueing, and exponential backoff for fault-tolerant real-time features.

Increased automated test coverage across iOS, Android, and Kotlin Multiplatform projects, significantly reducing regression rates and manual QA efforts.

Led rollout of automated QA pipelines, accelerating release cadence and improving runtime stability.

Enabled dozens of engineers to onboard and contribute within two months through clear system documentation and architectural simplification of a complex Kotlin Multiplatform codebase.

Drove mobile hiring processes, refining interview loops, and building a high-caliber iOS engineering pipeline.

Saved developers hundreds of hours per quarter by converting manual QA scenarios into automated tests using Ruby, improving release quality, and reducing regressions.

Reduced regressions by 40% by enforcing mandatory tests on all new and modified code, eliminating hot fixes.

Integrated automation into GitHub workflows, streamlining release processes and developer feedback loops.

Refactored Ads & Leads iOS apps, improving testability and reducing crash rates by 25%.

Proposed and implemented strategies for modularizing legacy code.

Developed automated regression tests using Sinatra and UI testing, saving ~30 QA hours/month.

Drove cross-team discussions around technical debt management and prioritization.

Shaped iOS hiring pipeline by participating in interviews and helping build a cohesive, higher-quality engineering team

Served as Tech Lead for a greenfield payments app, defining architecture, unblocking engineers, and guiding product through prototype to production.

Modernized a legacy Swift codebase to improve modularity, increase testability, and enable faster iteration across multiple teams.

Implemented CI/CD pipelines that improved build reliability, reduce manual deployment efforts, and established TDD and agile workflows across the team.

Mentored peers in XP practices (pair programming, iterative development, CI), strengthening team collaboration and code quality.

Designed a lightweight modernization strategy for a high-risk legacy components, enabling safer increment refactoring and reducing regression risk.