Yousef Abdelhalim Khattab

Developed and maintained a large-scale enterprise Flutter application (~410K lines of code) supporting tracking of 150M+ labor hours across construction projects valued at $80B+. Structured a modular monorepo using Melos to improve code organization, reuse, and build/development workflows. Implemented NFC-based worker identification and BLE beacon detection for accurate indoor positioning and real-time workforce tracking. Built an offline-first architecture with reliable local storage, synchronization, and request caching to ensure consistent performance under low/unstable network conditions. Developed core modules such as Equipment Management and Crew Management for asset tracking, workforce assignments, and operational workflows at scale. Integrated AWS IoT services for real-time communication with connected systems and used Firebase tools (Crashlytics, Analytics, Remote Config) to improve monitoring, stability, and reliability. Implemented an Observations module supporting photo cap

Developed and maintained a large-scale enterprise Flutter app (~410K lines, 2,000+ files) supporting workforce tracking across construction projects with extensive operational scale. Structured a modular monorepo using Melos to improve organization, reuse, build, and development workflows. Implemented NFC-based worker identification and BLE beacon detection for accurate indoor positioning and real-time tracking. Built an offline-first architecture with reliable local storage, synchronization, and request caching for unstable/low network conditions. Developed core modules including Equipment Management and Crew Management for asset/workforce tracking and operational workflows. Integrated AWS IoT services for real-time communication between mobile devices and connected systems, and utilized Firebase tools such as Crashlytics, Analytics, and Remote Config. Built an Observations module supporting photo capture, digital signatures, and GPS tagging. Implemented internal diagnostics/troublesh

Developed a full e-commerce mobile application from scratch, implementing Firebase Authentication with OTP verification for secure login. Built a scalable product catalog with categories, subcategories, and advanced filtering to enhance product discovery. Implemented a real-time shopping cart system with dynamic updates and integrated Google Maps for accurate delivery location selection and order processing.