
Olimpia Zurek contributed to the Expensify-App and margelo/expensify-app-fork repositories by building and optimizing features focused on performance, code quality, and workflow stability. She improved UI responsiveness and asset loading through dynamic imports and memoization in React and TypeScript, while enhancing CI/CD reliability with workflow automation and submodule management. Olimpia addressed caching strategies and state management to streamline expense processing, and refactored components and custom hooks for maintainability. Her work included targeted bug fixes, code formatting consistency, and performance instrumentation, resulting in more stable deployments and efficient user flows. The engineering demonstrated depth in both frontend and workflow automation.
March 2026 performance highlights for callstack-internal/Expensify-App focusing on the ManualOpenCreateExpense flow. Delivered a targeted performance optimization by introducing a policy selector to minimize unnecessary subscriptions and improve handling of policy data.
March 2026 performance highlights for callstack-internal/Expensify-App focusing on the ManualOpenCreateExpense flow. Delivered a targeted performance optimization by introducing a policy selector to minimize unnecessary subscriptions and improve handling of policy data.
February 2026 monthly summary for margelo/expensify-app-fork focused on delivering business value through code quality improvements, feature expansion, and performance optimizations. The work emphasizes stable, maintainable code and faster, safer expense processing for users and downstream systems.
February 2026 monthly summary for margelo/expensify-app-fork focused on delivering business value through code quality improvements, feature expansion, and performance optimizations. The work emphasizes stable, maintainable code and faster, safer expense processing for users and downstream systems.
January 2026 monthly summary for callstack-internal/Expensify-App focusing on business value and technical accomplishments. Key activities included stabilizing the Mobile-Expensify integration by rolling back to a stable submodule state, and delivering UI/code quality improvements for the payment and card flows to improve consistency and maintainability. The roll-back ensured reliable builds and reduced cross-project issues, while the UI/UX cleanup enhances user trust and reduces onboarding time for new contributors.
January 2026 monthly summary for callstack-internal/Expensify-App focusing on business value and technical accomplishments. Key activities included stabilizing the Mobile-Expensify integration by rolling back to a stable submodule state, and delivering UI/code quality improvements for the payment and card flows to improve consistency and maintainability. The roll-back ensured reliable builds and reduced cross-project issues, while the UI/UX cleanup enhances user trust and reduces onboarding time for new contributors.
In Oct 2025, delivered stability improvements and CI/CD enhancements across two Expensify-related repos: margelo/expensify-app-fork and callstack-internal/Expensify-App. Key work included React compilation stability for MoneyRequestParticipantsSelector and IOURequestStepParticipants, major CI/CD robustness and submodule handling, and CI test chunking optimization to prevent memory failures. These changes reduced flaky builds, improved feedback cycles, and enabled faster, more reliable deployments. Technologies demonstrated include React memoization patterns (useMemo/useCallback), submodule management in CI, workflow optimization, test chunking strategies, and conflict resolution.
In Oct 2025, delivered stability improvements and CI/CD enhancements across two Expensify-related repos: margelo/expensify-app-fork and callstack-internal/Expensify-App. Key work included React compilation stability for MoneyRequestParticipantsSelector and IOURequestStepParticipants, major CI/CD robustness and submodule handling, and CI test chunking optimization to prevent memory failures. These changes reduced flaky builds, improved feedback cycles, and enabled faster, more reliable deployments. Technologies demonstrated include React memoization patterns (useMemo/useCallback), submodule management in CI, workflow optimization, test chunking strategies, and conflict resolution.
Concise monthly summary focusing on key accomplishments, major bug fixes, and business impact across three repositories for 2025-09. Highlights include reliability improvements for UI performance tests, stable test workflows for PRs, and broad improvements to performance instrumentation and asset loading that enhance user experience and observability.
Concise monthly summary focusing on key accomplishments, major bug fixes, and business impact across three repositories for 2025-09. Highlights include reliability improvements for UI performance tests, stable test workflows for PRs, and broad improvements to performance instrumentation and asset loading that enhance user experience and observability.

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