Selected Works — Chronological Timeline
(Newest → Oldest)

2025–Present — K-Pop Virtual Idol Production (Unreal Engine 5)

• Senior Real-Time Developer for a K-Pop virtual idol production company
• Live OptiTrack motion-capture integration for idol performers
• Live Link facial & body tracking pipelines
• MetaHuman animation systems for broadcast-grade performance
• Custom live virtual camera systems for concerts & livestreams
• Blueprint + C++ hybrid tool development
• Multi-device real-time production optimization
• High-performance virtual idol concerts & digital broadcast workflows

2022–2025 — ZEPETO X / ZTX (NAVER)

• Senior Unity Engineer on Web3 ZEPETO X platform
• ThirdWeb, wallet auth & NFT inventory systems
• Massive multiplayer virtual world → Mobile-first digital fashion MMO
• Housing systems: 3D home & garden decoration
• Farming systems: planting, harvesting & resource loops
• Mini-games, UI systems & movement controllers
• Photon + Nakama + Coherence multiplayer networking
• Firebase backend, inbox & live notifications
• Full Web3 integration with smart contracts & blockchain assets
• Addressables, asset streaming & performance optimization
• Cross-team coordination between Korean & global engineers

2022 — DevUnlimit (Metaverse, AR & Motion Tracking)

• Lead Unity & Unreal developer for metaverse systems
• AR motion tracking & real-world movement scoring with AI
• Machine-learning-based movement evaluation
• Metaverse environment design & multiplayer interaction
• Networked movement systems & world simulation

2021 — Kippo: Dating App → Real-Time Social Game (USA)

• Upgraded dating app into real-time multiplayer social game
• Built central 3D social hub world in Unity
• Photon networking for real-time online interaction
• Unity runtime embedded into native Android & iOS apps
• Bridge communication between Unity & native Swift/Android
• Live chat & Agora integration
• Worked on-site in the United States during production

2017–2021 — 21CC Education Platform (Netherlands)

• Lead Unity Developer & Scrum Master for gamified education platform
• Unity3D mini-games (2D & 3D) for certification-based learning
• Soft-coded architecture with asset bundles & modular GUI
• Custom backend with SQL, PHP, Firebase & REST APIs
• Moodle API + Tin Can API Learning Record System integration
• Scoring, KPI tracking & analytics-driven education flow
• Led full platform migration from Unity to Angular
• UN Secretariat (NYC) product presentation
• Trained & mentored international engineering teams

2018–2021 — Rondje Logistiek (Logistics Training Games)

• Gamified logistics recruitment & KPI training platform
• Unity 2D & 3D mini-games with fantasy world-map hub
• Soft-coded company customization system
• PlayFab authentication & custom KPI backend
• Score tracking, user management & analytics dashboards
• WebGL deployment for in-browser corporate training
• Published to multiple app stores

2015 — Unraveled: Tale of the Shipbreaker’s Daughter (Kickstarter)

• Kickstarter-funded RPG raising awareness for shipbreaking labor issues
• Collaboration with Hiroki Kikuta (Secret of Mana) & Dale North
• Custom battle systems, particle effects & gameplay logic in Unity
• Original GUI design & hand-crafted visuals
• Co-wrote full narrative & directed cinematography
• Led successful Kickstarter campaign ($17,867 funded)
• Handled global PR, interviews & media outreach
• Steam Greenlight approval & release management

2009–2012 — Whisper of a Rose (RosePortal Games — Founder)

• Founded RosePortal Games as an independent studio
• Solo-developed 2D RPG with full custom Ruby engine
• All graphics, environments, UI & animation created in-house
• Custom combat, crafting, inventory & menu systems
• Full original story, dialogue & cutscene direction
• Published on Big Fish Games, Amaranth, Aldorlea & Steam
• Achieved #1 Top-Selling Release on Steam (Degica)
• Gameplay balancing, difficulty tuning & economy design
• Managed external artists for cover & promotional assets