CHAMROEUN Vatanak
Software Engineer | Android & Flutter Developer
I build high-quality mobile applications with a focus on performance, maintainability, scalability, and thoughtful design.
Currently working on Android and Flutter applications. I value elegant interfaces, solid engineering foundations, and shipping things that people actually use.
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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 telecom 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, Expense Claim, Resignation, Employee Profile) with multi-role approval workflows and complex calculations.
- Drove feature feasibility and end-to-end delivery in collaboration with product, design, and backend teams across multiple concurrent 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 internal 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 after 3 months in recognition of strong contributions to the team.
- Built a production e-commerce app from requirements to launch.
- Maintained and improved existing mobile apps.
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
Simple interfaces are harder to design, but worth it.
Shipping matters more than overthinking.
Performance is a feature.
Consistency builds trust.
Good products come from attention to detail.