$ whoami▍
H JH
iOS / Mobile App Engineer
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$ cat about.md
I studied game development at university in Malaysia, then started my career in app and game development at a venture company. Since it was a small team, I was involved in everything from requirements definition and client meetings to development itself, working across a wide range of industries — education, games, banking, e-commerce.
Along the way I gradually specialized in iOS development, and in pursuit of more advanced technical work I moved to Japan in 2022. I now work as a mobile app engineer in Japan, building everything from fitness apps to business systems, insurance apps, and apps with IoT connectivity.
I've always loved games and had a strong interest in the technical strength of Japan's game development industry, as well as a long-standing interest in Japanese culture and subculture. I want to keep sharpening my skills while building things in Japan.
// languages & tech stack
Skills
Languages
Mobile Development
DB & Cloud
Tools
// things I've built (newest first)
Projects
Elevator Diagnostics App
2025.05 - Present
An elevator diagnostics app over BLE. Working as SE on a 17-person project, handling screen/feature development, bug analysis, and code review, including file export/upload features.
Insurance App
2024.11 - 2025.04
A non-life insurance app supporting AES encryption and Universal Links. Handled feature development (carousel, common picker) and code review (7 screens, ~5,000 LOC).
Vehicle Inspection Certificate Viewer
2024.01 - 2024.10
An app reading vehicle inspection certificates and My Number cards via NFC. Handled SwiftUI screen development and bug analysis on a 40-person project (team of 12, ~5,000 LOC).
Spa Management System for iPad
2023.03 - 2023.12
App and server development for an iPad-based business system. Implemented the MVVM pattern and communication APIs on a 30-person project (team of 10).
Fitness App
2022.06 - 2023.02
An in-house fitness app, handled end-to-end from requirements through release, including designing and building custom components (~6,600 LOC).
uGift Coupon Purchase
2021.10 - 2022.05
A coupon-purchase e-commerce app built with the MVVM pattern and QR code generation, handled end-to-end from requirements through maintenance.
Healthcare E-commerce App
2020.01 - 2021.11
An e-commerce app for pharmaceuticals and health products, handled the integration with the Salesforce server.
Word Quiz Game App
2019.09 - 2019.12
A quiz game app built with Phaser (HTML5), handled the JavaScript framework implementation.
Boost HTML5 Games
2019.08 - 2019.11
Development and performance testing of HTML5 games built with Phaser.
Digital Signature App
2018.08 - 2019.08
A document management and e-signature app enabling paperless workflows, implemented photo-to-PDF conversion (14 screens, ~5,500 LOC).
Hong Leong Connect: Community
2018.03 - 2018.08
Handled design through maintenance of a banking community app.
DSC IT Literacy Check
2017.06 - 2018.03
An educational app assessing students' IT knowledge, handled end-to-end from requirements through release.
Axiata Core Values Games
2017.04 - 2017.06
An internal corporate iOS game app built with the MVVM pattern.
Gamers Hideout
2017.01 - 2017.03
A retail app syncing data between POS systems and WordPress, with QR/barcode generation.
DT Café
2015.12 - 2016.12
Handled development through maintenance of a client-facing game app.
Funscore
2014.08 - 2015.12
A learning gamification app for schools, applying game design elements to education.
// career so far (newest first)
Experience
2022.06 - Present
Mobile App Engineer (Team Lead → SE) · SES / contract development (Japan)
Worked on a variety of mobile apps: fitness, spa business systems, vehicle inspection viewing, insurance, and elevator diagnostics.
- ›Handled everything from external/internal design docs and test specs through code review
- ›Built hardware-integration features (NFC, BLE) mainly with Swift / SwiftUI
- ›Contributed to multiple 30-40 person projects
2014.08 - 2022.05
Software Engineer (Programmer → Team Lead) · IT venture company (Malaysia)
Built apps across a wide range of industries — education, games, retail, banking, e-commerce — growing from programmer to team lead.
- ›Took on responsibilities beyond development, from requirements definition to client meetings
- ›Built games and mobile apps with a range of technologies: Unity, Swift, Objective-C
- ›Shipped 10+ projects to release over 8 years
// feel free to reach out