Profile
Full stack engineer with 4+ years of backend experience, specialising in Ruby on Rails and distributed system design. Proven track record across e-commerce, HR/payroll platforms, and mobile apps. Comfortable owning the full development lifecycle — API design, schema definition, deployment, and monitoring. Experienced in AI-assisted delivery using Claude Code. Prior background in game and product design sharpens instincts for user-facing trade-offs and cross-functional communication.
Skills
Primary
Ruby on Rails PostgreSQL Redis REST API
Working Knowledge
React Native TypeScript React Golang GCP
Technologies
AASM Shoryuken Sinatra Redux React Query Expo gRPC Cloud Run CI/CD Claude Code
Experience
Employment Hero Feb 2026 – Present
Full Stack Software Engineer
  • Built and shipped mobile features in the EH Life app (React Native / Expo) covering leave management, payroll, and HR workflows for HR-only and payroll-connected user types
  • Fixed critical leave validation bug where HR-only managers were incorrectly blocked from editing historic leave — diagnosed a state machine edge case and delivered a targeted fix with full test coverage
  • Developed and maintained Ruby on Rails API endpoints with complex permission model enforcement
  • Adopted AI-assisted development with Claude Code as primary workflow — using agentic TDD cycles, automated code review, and PR management to ship features faster and with higher confidence
Eslite Spectrum Co., Ltd. Sep 2025 – Jan 2026
Backend Engineer (Ruby on Rails)
  • Developed and maintained backend systems for Eslite's omnichannel e-commerce platform
  • Designed RESTful APIs and data schemas, owning end-to-end feature delivery from design through deployment
  • Implemented async task processing with Shoryuken and state machine workflows with AASM
  • Optimised ActiveRecord queries to eliminate N+1 problems and reduce database load
Baton Pass IT Co., Ltd. Oct 2024 – Aug 2025
Backend Developer
  • Built and deployed backend services with Ruby on Rails and Sinatra; integrated third-party APIs
  • Deployed containerised services on GCP Cloud Run with CI/CD via Cloud Build
  • Collaborated with frontend team on React.js integration, bridging API contracts and UI requirements
Easyship Dec 2020 – Oct 2024
Backend Engineer → Mid-level Backend Engineer
  • Built data-sync integrations with Wix, Square, and Dear Inventory, including webhook handling
  • Developed a Golang microservice on GCP that improved data pipeline throughput by 15%+
  • Implemented API retry system with cronjob-based failure recovery to reduce data loss
  • Designed a referral tracking system synced to external services for non-technical stakeholders
Gamania Digital · GellyBomb Games · RMT Games Studio 2012 – 2020
Game Planner / Co-Founder & Game Designer
  • Led product planning, prototyping, and spec writing for interactive games — skills that now directly inform how I scope APIs, communicate requirements, and reason about user flows
  • Co-founded two game studios, shipped AR/VR titles that won international awards, exhibited in Singapore and the US
Education
National Taipei University of Education
M. Design, Digital Technology Design (incomplete) · 2016–2021
National Chengchi University
B.S. Psychology · 2009–2014