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Welcome to Pixel Carrot

I'm Justin Nguyen, and this site is my digital notebook.

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Experience

Professional journey and achievements

Senior Mobile Engineer

Lazada · February 2020 – Present

  • • Led development of high-usage Android app (1M+ downloads) handling 700K-1M delivery sessions daily across 6 ventures (Vietnam, Thailand, Malaysia, Singapore, Indonesia, Philippines) through unified FirstMile, LastMile, and LineHaul modules
  • • Built offline-first architecture with camera scanner and scanner device integration processing 20K pickup parcels per session, ensuring zero data loss across hundreds of thousands of daily transactions
  • • Architected scalable Android system using Kotlin, Coroutines, Hilt, and Room for long-term maintainability and high-volume operations
  • • Mentored engineering team on architecture and development processes, accelerating onboarding and improving code quality

Research Assistant

National University of Singapore · October 2018 – October 2019

  • • Developed and deployed NUS Career+, an AI-driven platform for learning and career development on Android and iOS
  • • Researched and applied mobile development best practices to optimize app efficiency, security, and user experience

Software Developer

Newstead Technologies Pte. Ltd. · October 2017 – September 2018

Mobile Developer

ekino · November 2015 – September 2017

Android Developer

TMA Solutions · September 2014 – April 2015

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