Joined as a co-founder and developing a mobile game using UE5 and Go language.

OLOBOIn charge of developing a 3D avatar-based story creation app and platform that supports AI prompts, TTS (Text-to-Speech), and voice features.- Team rebuilding.- Mentoring team members as they are onboarded to enable them to extend and improve the product.- Design and implementation of the server architecture ensuring scalability- Designed and implemented methods for expressing actions and facial expressions- Handling voice files in different formats and versions, as well as video extraction.- Minimizes animation data without degradation by 40% of its original size- Shader maintenance.- Development of game design table tools and automation of build/deployment pipelines.- Launched on iOS and open beta on Android (English-speaking countries).

Work remotely.- EOS plugin-related bug fixes and migration of blueprints into C++- Integration of the PlayFab account system and AWS GameLift with the VR app.- Setting up NFT development

ArcheAge2- Migrating the ArcheAge server from CryEngine to a UE4-compatible version.- Replacing the game design table management, initially implemented in Ruby on Rails, with an Excel and Python.NET solution for data validation and code generation, utilizing the Cog and Cerberus packages.- Implementing login state management using FSM.- Integrating PhysX with the zone server

Moonlight sculptor- Bug fixing, polishing the game log system, and addressing small game logics such as enchantments and scheduled events. - Developed a guild bank, covering UI to server logic, with log cache features and a database schema using Elixir Ecto.

Moonlight sculptor2Developed an animation-style mobile game- Implemented synchronization between game logic and UI using the Flux pattern.- Managed combat actions and scenes on the client side based on parallel Finite State Machines (FSM).- Automated Google Docs processes and code generation.- Converted the Node.js codebase of the game server to Typescript.Contributed to the live service of "ArcheAge Begins."

Civilization Online (franchise for 2K Games)Led the team-building process for the programming teamLed the development process starting from the prototype as one of the lead programmers- Integration of embedded web browser based on CEF.- Layer based spawner management in server-side.- Replacing CryEngine's pak library.- Integrated PhysX with the world server and zone server, and provided mentoring- Ported various features of CryEngine to the server:-- Exported map data to be compatible with PhysX.-- Implemented segmented world data.-- Developed the vehicle system.- Implemented Region of Interest (ROI) based static/dynamic unit loading and asynchronous asset loading functionality for the player character.- Basic design, implementation, and mentoring for the housing system- Implemented the initial version of in-game modification for the server-side navigation mesh while providing mentoring-- Implementation of divide/conquer, edge swapping and node relaxation. -- Splitting/merging of navigation mesh elements.-- Forbidden area handling around housing.- Mentoring related to pathfinding after implementing a mockup for road and building construction- Implemented a feature where the civilization and related spawn locations change when starting a new game session- Developed secure socket and handled security responsibilities-- Implemented the exchange of session keys for individual users and broadcasting purposes.-- Distinguished critical data between the client and serverSupported project transition to China.

ArcheageDeveloped client-side seamless pathfinding.- Assembling of navigation mesh blocks considering forbidden area. - Separating pathfinding logic from main thread into multithread.

- Implemented a network using Boost ASIO.- Developed a front-end server responsible for encryption/decryption and broadcasting.- Implemented an instance dungeon server that shares navigation mesh and static assets.

- Utility library including secure socket based on RSAREF - Authentication and server side game logic- Multilayer pathfinding using PathEngine- Front-end server (player management, packet relay between client and game server).- DB cache server (garbage collection, record crc check, player data sharing between game servers).

YulGang OnlineParticipated in development as one of the lead server programmers- Server side game logic - Standalone guild server which support read only cache (user created guild mark)-- guild mark cache in client side- Simple event server (which gives real goods) in Java. - DB table schema and sql query.

Lunentia OnlineResponsible for security and additional server logic as a server programmer.- Packet library based on Snacc- DB schema and sql query

Now at SK Group (http://www.sksiltron.com/)- In charge of the lifetime measurement of wafers - Developed a statistical analysis solution for lifetime data