Led design and delivery of foundational checkout frameworks used across Square POS clients, supporting high-traffic, revenue-critical workflows including cart construction, order state management, and checkout orchestration.
- Designed offline-first order and payment state management systems for cart construction, reconciliation, and recovery during network outages.
- Led client architecture for Square's migration from the legacy Bills API to the Orders platform across iOS, Android, and backend systems.
- Improved checkout reliability through architectural changes, safe rollout strategies, and better observability that reduced production regressions.
- Delivered platform improvements used by millions of sellers processing roughly $300M in monthly POS transactions.
- Provided staff-level technical leadership through architecture reviews, mentorship, and hiring contributions.