CHAMROEUN Vatanak
Software Engineer | Android & Flutter Developer
I build high-quality mobile applications with a focus on performance, maintainability, scalability, and attention to UI/UX detail.
Currently working on Android and Flutter applications. I value clean UI, solid engineering foundations, and building things that people love.
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EmailExperience
Smart Axiata Co., Ltd
Application Developer - Android
Jan 2025 — Present
Junior Application Developer - Android
Jan 2023 — Dec 2024
- Shipped production features for SmartNas — Smart's flagship mobile app — including eSIM activation, ABA KHQR, AI Chatbot, gamification, Smart@Home 5G and many other projects.
- Built end-to-end HR self-service modules in Smart HRIS (Cash Advance, Resignation, and Notification) with multi-role approval workflows
- Drove feature feasibility and end-to-end delivery in collaboration with product, design, and backend teams across multiple projects (SmartNas, HRIS, ePOS-DMS).
- Migrated legacy Java codebase to Kotlin and enforced code quality standards using SonarQube, resolving Major code smells and reducing technical debt.
- Maintained 99.5% crash-free stability by integrating Firebase Crashlytics and Analytics, proactively monitoring release health and resolving production crashes before user escalation.
- Resolved GSOC security vulnerabilities, strengthening app security posture across releases.
- Reviewed vendor-submitted code, provided structured feedback, and ensured alignment with project architecture and quality standards.
- Managed Android release process, including branch management, code merging, and Play Store submission across multiple app versions.
Codingate Technology Co., Ltd
Junior Flutter Developer
Oct 2021 — Jul 2022
- Promoted from intern to Junior developer after 3 months of internship in recognition of strong contributions to the team.
- Built a production e-commerce app from requirements to launch.
- Maintained and improved existing mobile apps.
Skills
Technologies
Tools
Projects
SmartNas
↗SmartNas gives every subscriber easy access to all their information and full control of their account. Get everything you need with just a few clicks.
Smart HRIS
HRIS is a human resources information system designed to streamline HR processes and improve employee management.
DMS
DMS stands for Dealer Management System, a platform used by Smart Axiata to manage sales, recruitment, and dealer's relationships.
Education
Cambodia Academy of Digital Technology - CADT
Bachelor of Computer Science
2019 — 2023
Institute of Foreign Languages - IFL
Bachelor of Education in English
2019 — 2023
Open Source
Beliefs
Design is not just how it looks, but how it works.
Empathy for users turns software into products people love.
The best solution is often the simplest one that works well.
Solve the problem in front of you, not imagined ones.
Performance is a feature.
Consistency builds trust.
Every abstraction needs to earn its place.
Good architecture makes change easier.
Good products come from attention to detail.