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Mohammad Luthfi Fathur Rahman

PROFILE

Mohammad Luthfi Fathur Rahman

Luthfi contributed to Expensify/App and margelo/expensify-app-fork by building policy customization features, enhancing offline user experience, and improving QuickBooks Desktop integration. He implemented robust policy rule management with custom fields and offline feedback, ensuring data integrity and safer configuration workflows. On the backend, he delivered API and UI enhancements for accounting method management, automated sync flows, and improved transaction thread handling. Luthfi also focused on code quality, localization, and UI correctness, using TypeScript, React Native, and JavaScript. His work addressed maintainability, localization coverage, and reliability, demonstrating depth in full stack development and cross-repository collaboration for business-critical workflows.

Overall Statistics

Feature vs Bugs

67%Features

Repository Contributions

34Total
Bugs
5
Commits
34
Features
10
Lines of code
1,042
Activity Months3

Work History

January 2026

11 Commits • 5 Features

Jan 1, 2026

January 2026 focused on code quality, UX improvements, and backward compatibility across Expensify/App and internal Expensify-App. Key deliveries include formatting standardization, enhanced transaction duplication review, UI correctness for MoneyRequestView, restoration of legacy transactions UI, and improved chat UX with status indicators for admin and concierge contexts. These efforts deliver measurable business value: a cleaner codebase, more accurate transaction processing, fewer empty UI states, smoother platform builds, and more reliable cross-workflow experiences for support and finance users. Demonstrated capabilities include TypeScript/React Native development, Prettier-driven code hygiene, optimistic UI updates, and effective cross-repo collaboration to stabilize platform builds (Hermes/Expo compatibility).

October 2025

19 Commits • 3 Features

Oct 1, 2025

In October 2025, delivered major QBD Desktop integration enhancements, transaction thread workflow improvements, and code quality/localization work that together boosted automated financial processing, localization coverage, and developer productivity. Highlights include backend/API and UI changes for QBD accounting method management, automation of sync flows, proactive transaction-thread handling, and CI/translation improvements.

September 2025

4 Commits • 2 Features

Sep 1, 2025

September 2025: Implemented robust policy customization and offline UX for policy rules across Expensify/App and margelo/expensify-app-fork. Delivered a new customRules field in pending policy configurations, added offline UI feedback to policy rule actions, ensured data integrity by clearing pending customRules after policy data builds, and introduced an offline-update UX with pending state and generic error handling. These changes reduce configuration risk, improve reliability in offline scenarios, and streamline policy management, delivering measurable business value by enabling safer, faster configurations and better user experience.

Activity

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Quality Metrics

Correctness91.4%
Maintainability90.8%
Architecture90.0%
Performance88.8%
AI Usage21.2%

Skills & Technologies

Programming Languages

JavaScriptKotlinTypeScript

Technical Skills

API DevelopmentAPI IntegrationBabelBackend DevelopmentCode FormattingCode RefactoringComponent RefactoringConfigurationConfiguration ManagementFront End DevelopmentFront-end DevelopmentFrontend DevelopmentFull Stack DevelopmentInternationalizationInternationalization (i18n)

Repositories Contributed To

3 repos

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

margelo/expensify-app-fork

Sep 2025 Oct 2025
2 Months active

Languages Used

TypeScriptJavaScript

Technical Skills

Mobile DevelopmentPolicy ManagementState ManagementTypeScriptAPI DevelopmentAPI Integration

Expensify/App

Sep 2025 Jan 2026
2 Months active

Languages Used

JavaScriptTypeScript

Technical Skills

Front End DevelopmentReact NativeTypeScriptReactfront end developmentfull stack development

callstack-internal/Expensify-App

Jan 2026 Jan 2026
1 Month active

Languages Used

JavaScriptKotlinTypeScript

Technical Skills

BabelJavaScriptMetro ConfigurationReactReact NativeTypeScript

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