Tran Le Hai Duong

Frontend Developer Duong Tran Le Hai Hanoi, Vietnam SUMMARY Frontend Engineer with 3+ years of experience building scalable and high-performance applications using React and React Native. Proven track record of delivering user-focused products in the FinTech domain, serving 50,000+ users. Skilled in optimizing performance, improving user experience, and developing data-driven interfaces. Passionate about crafting intuitive UI and enabling users to interact with complex systems efficiently. EXPERIENCE BACKEND DEVELOPER | Jul 2025 — Mar 2026 FPT Software – Hanoi Tech stack: Java, AWS Cognito, CloudWatch, Nodejs - Developed REST APIs using Java. - Developed pdf report generation to upload to AWS S3 with NodeJS. - Developed scheduled background jobs using AWS EventBridge. - Implemented authentication with AWS Cognito and Azure. - Investigated issues with AWS CloudWatch. MOBILE/WEB DEVELOPER | Apr 2023 — Mar 2026 FPT Software – Hanoi Tech stack: React Native, TypeScript, Firebase Crashlytics, AWS Cognito, MoEngage, Lokalise, ReactJS, Ant Design, JavaScript, CSS - Built and maintained cross-platform mobile applications serving 50,000+ users with a focus on performance and usability. - Reduced crash rates and improved app stability through monitoring and debugging with Firebase Crashlytics. - Migrated legacy JavaScript codebase to TypeScript, improving maintainability and reducing runtime errors. - Implemented feature flag system enabling safe rollouts and faster experimentation. - Designed and improved complex user flows for financial features (eKYC, authentication). - Developed responsive web applications using ReactJS and Ant Design. - Customized UI components and improved consistency using reusable component patterns. - Collaborated with cross-functional teams to identify and resolve production issues efficiently. SKILLS • Frontend: ReactJS, React Native, Next.js, JavaScript, TypeScript, HTML, CSS • Backend: Node.js, Java • Cloud & Service: AWS (Cognito, CloudWatch), Firebase • Database: PostgreSQL, MongoDB • Tools & Others: Git, WordPress EDUCATION Hanoi University of Science and Technology - Hanoi Bachelor of Science in Information and Communication Technology | 2018 - 2024 LANGUAGES English: IELTS 7.0 CONTACT LinkedIn: linkedin.com/in/duong-tran-b5 GitHub: github.com/TranLeHaiDuongICT01 Portfolio: tranlehaiduongict01.github.io/portfolio