Experience

Mar 2024 - Jun 2024

Senior Mobile Engineer•contractor•Germany

Slashed home screen load time by 80-93% (from 15-20s to 1-3s) through smart data fetching.
Consolidated 50+ cloud functions into streamlined API infrastructure in 3 weeks.
Engineered multi-threaded media upload system using Flutter Isolates, enabling concurrent processing of 10+ media files (up to 1GB) with background notifications while maintaining 60 FPS UI performance.
Resolved 18 long-standing API errors by implementing a comprehensive error-handling system.
Reduced app size by 17% through better asset management and code splitting.

Jan 2024 - Mar 2024

Full-Stack Developer•freelancer•Singapore

Reduced code quality issues by 95% (from 2,200 to fewer than 100) by implementing Very Good Ventures analysis lints and enforcing type and null safety.
Architected Algolia-Firebase integration for user-based content filtering, enabling real-time personalized search across 10000+ job posts.
Reduced app startup time by 31% through lazy loading and optimized asset delivery.
Built automated email notification system with deep linking to job applications and user interactions, driving 23% click-through rate and increasing user engagement.
Implemented GitHub Actions CI/CD workflow to automate the deployment process, resulting in a 75% reduction of release time from hours down to mere minutes while eliminating all manual deployments.
Led code review processes and mentored a junior developer in Flutter best practices.

Oct 2023 - Jan 2024

Senior Flutter Developer•freelancer•Luxembourg

Streamlined development cycle using custom build automation and shared component library, delivering project 1.5 months ahead of schedule.
Bridged technical gaps between Flutter frontend, Django backend, and client teams through detailed API documentation and integration testing, achieving 100% sprint delivery targets.
Implemented BDD-style Flutter integration tests covering 20+ critical user workflows, including role-based access control, scheduling operations, and real-time status updates.
Built offline data persistence using Hydrated BLoC and Flutter Secure Storage, maintaining secure user access to critical features and encrypted data without internet.

Oct 2021 - Oct 2023

Flutter Developer•contractor•Luxembourg

Reduced null-related crashes by 63% through comprehensive Flutter migration and null safety implementation.
Developed Flutter MVP banking app processing 10K receipts daily, delivered in 2 weeks.
Achieved 99.9% crash-free sessions through robust error handling and monitoring.
Engineered native background sync system using Flutter Method Channels with Swift (iOS) and Kotlin (Android) for persistent data synchronization during app termination.
Implemented timezone-aware merchant shift system handling 24-hour operations spanning multiple days (4AM-4AM), ensuring accurate data processing across different time zones.
Integrated Socket IO client for real-time receipt updates with server-side validation, maintaining low-latency synchronization of transaction data.