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Zuzanna Furtak

PROFILE

Zuzanna Furtak

Over several months, contributed to Expensify/App and related repositories by architecting and standardizing the SelectionList component family, unifying selection workflows across mobile and web. Leveraged React, React Native, and TypeScript to refactor legacy components, migrate multi-page UIs, and introduce features like sectioned lists, debounced data, and keyboard-aware behaviors. Focused on maintainability through code cleanup, dependency management, and extensive linting, while improving performance by removing manual memoization and optimizing state management. Enhanced test reliability with targeted bug fixes and test-driven development. The work resulted in a cohesive, accessible UI, streamlined onboarding, and reduced technical debt across the codebase.

Overall Statistics

Feature vs Bugs

49%Features

Repository Contributions

250Total
Bugs
49
Commits
250
Features
48
Lines of code
19,984
Activity Months5

Work History

March 2026

43 Commits • 10 Features

Mar 1, 2026

March 2026 summary for Expensify-App focused on code quality, architectural consolidation, and test reliability. Delivered key refactors to standardize UI components, stabilized the test suite, and tightened performance while maintaining business velocity.

February 2026

39 Commits • 10 Features

Feb 1, 2026

February 2026 monthly summary focusing on key accomplishments and business value. Overview: A major UI refactor and quality drive centered on the SelectionList component family, delivering consistent multi-page selection experiences, improved performance, and production-readiness across the Expensify App.

January 2026

105 Commits • 20 Features

Jan 1, 2026

January 2026 monthly summary: Focused on modernizing the selection UI across Expensify apps, delivering a cohesive SelectionList-based experience and improving stability and performance. Key features delivered include migrating screens to SelectionList and SelectionListWithModal, debouncing data for modal selections, and launching a new Web Selection List Component Architecture with shared types and behavior. The work also includes significant integration of SelectionListWithSections across components (CategoryPicker, VacationDelegatePage, SearchMultipleSelectionPicker) and DestinationPicker, along with UI/UX improvements such as automatic scroll-to-top for multi-section lists and options to disable maintaining scroll position during navigation. In parallel, substantial code quality and lint/type fixes were completed to improve maintainability, reduce flaky tests, and align with ESLint/TypeScript standards. Overall impact: improved business value through faster, more reliable, and consistent selection workflows, better accessibility, and reduced maintenance burden.

October 2025

25 Commits • 3 Features

Oct 1, 2025

October 2025 summary: Implemented standardized UI via the new SelectionList across multiple pages in margelo/expensify-app-fork, delivering consistent user experiences and improved maintainability. Extended UI capabilities to payments and onboarding flows by integrating SelectionList into CurrencyModal and onboarding components. Improved reliability and accessibility on WorkspaceSettlementFrequency page, and introduced safe-area and keyboard-aware behaviors to selection lists in callstack-internal/Expensify-App. Contributed targeted lint, focus management, and UX refinements with multiple small commits that collectively reduce future maintenance costs and accelerate feature delivery.

September 2025

38 Commits • 5 Features

Sep 1, 2025

Concise monthly summary for 2025-09 focusing on business value and technical achievements across Expensify/App and margelo/expensify-app-fork. Highlights include a major refactor of the SelectionList API, adoption of FlashList for performance, and widespread migration to the new UI primitives, complemented by stability, lint, and lockfile improvements that enhance reliability and maintainability.

Activity

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Quality Metrics

Correctness91.2%
Maintainability89.4%
Architecture88.0%
Performance88.2%
AI Usage22.6%

Skills & Technologies

Programming Languages

JSONJavaScriptMarkdownNoneObjective-CReactRubyTypeScripttsx

Technical Skills

Code CleanupCode OrganizationCode RefactoringComponent DevelopmentComponent OrganizationComponent RefactoringComponent RenamingDependency ManagementFlashListFront End DevelopmentFront-end DevelopmentFrontend DevelopmentJSDocJavaScriptMobile Development

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

callstack-internal/Expensify-App

Oct 2025 Mar 2026
4 Months active

Languages Used

JavaScriptTypeScriptMarkdownNone

Technical Skills

Front-end DevelopmentFrontend DevelopmentMobile DevelopmentReactReact NativeTypeScript

margelo/expensify-app-fork

Sep 2025 Oct 2025
2 Months active

Languages Used

JSONJavaScriptObjective-CReactRubyTypeScripttsx

Technical Skills

Code CleanupCode OrganizationComponent DevelopmentComponent RefactoringComponent RenamingDependency Management

Expensify/App

Sep 2025 Jan 2026
2 Months active

Languages Used

JavaScriptTypeScript

Technical Skills

Code OrganizationCode RefactoringComponent OrganizationComponent RefactoringFrontend DevelopmentJSDoc