1. Highway BIM (June 2022 – November 2023) (Internal Use)• Objective: To import/export highway models and perform real-time analysis, statistics, measurement, exploration, and visualization based on data.• Specifications: PC, Unity, mouse, 3D mouse, keyboard.• Development Environment: Windows 10, Unity 2021, Visual Studio 2019.• Programming Languages: Unity C#, .Net (Google Protocol Buffer).• Role: Led the development of core functionalities in Unity.• Outcome: Enabled comprehensive insight into the entire construction area, making it easier to compare and analyze the progress of each design phase.• Technologies: 1) Graphics Optimization & Model Processing: - Optimized Vertices/Triangles, UV mapping, set Normals, and assigned/converted textures - Mesh splitting, metadata storage, and mesh clipping for area creation and editing 2) Automation & Efficiency Improvement: - Automatic generation of LOD, minimaps, and keymaps - Automatic road profile generation, player position, and viewpoint synchronization - Multi-road creation, real-time cross-sectional analysis, camera movement, and recording 3) Visual Distinction & Interface Enhancement: - Shader-based Material distinction by model type, CAD data output, and color coding - AABB and distance clipping, model type On/Off control2. Design Blueprint Automation (June 2020 – May 2022) (Internal Use)• Objective: To automatically generate road design blueprints based on data.• Specifications: Various design options such as earthworks, drainage, pavement, cross-sections, and plans.• Development Environment: Windows 10, Visual Studio 2018, MySQL, Teigha (CAD Library).• Programming Languages: .Net.• Role: Lead developer of the WPF application (built using MVVM pattern) and database management.• Outcome: Significant improvement in work efficiency and precision through automation and increased flexibility in the design process.

FPS Safety Training Game (October 2018 – April 2019) (Delivered to Samsung E&A Co., Ltd. (formerly Samsung Engineering))• Objective: To provide immersive safety training by simulating common safety incidents during construction processes• Specifications: 3D simulation of 100 types of safety incidents, 8 maps, 8 languages, mouse, and keyboard• Development Environment: Windows 10, Unity 2018, Visual Studio 2018• Programming Language: Unity C#• Role: Led the development of core functionalities in Unity• Outcome: Integrated immersive safety incident simulations and a performance evaluation system, maximizing engagement and educational effectiveness• Technologies: 1)Safety Incident Simulation and Education System - Developed a system where users can choose maps and languages, then explore and experience randomly generated safety incidents using a mouse and keyboard - Provided real-time safety incident experiences and preventive education to create an immersive learning environment 2) Performance Evaluation and Review Features - Implemented a system for reviewing discovered and missed safety incidents through video playback, allowing users to revisit their learning experience - Introduced a scoring system based on incident exploration within the given time, enhancing user engagement and motivation for learning

1. VR Printing Factory Safety Training Simulator (Aug 2018 – Feb 2019) (Delivered to LG Hausys)• Objective: Provide 4D safety incident experiences in a printing factory• Outcome: Received positive feedback from LG Hausys employees• Technologies: Implemented intuitive HMD interactions with models and sounds, precise location tracking for enhanced 4D experience, and hardware control via RS2322. VR Construction Site Safety Training Simulator (Jan 2018 – Oct 2018) (Delivered to KOSHA and Korea Gas Corporation)• Objective: Simulate 4D safety incidents using VR and real hardware• Outcome: Successfully deployed in safety centers nationwide with positive feedback from KOSHA• Technologies: Integrated scaffolding devices for shaking/falling simulations and controlled hardware via RS2323. AR Safety Training App (Jan 2018 – Apr 2018) (Delivered to KOSHA)• Objective: Simulate forklift and tower crane accidents via AR• Technologies: Real-time 3D animations, interactive model parts for names/descriptions, and distance-based interactions• Outcome: Used as official safety training material by KOSHA4. VR Ship Control Simulator (Sept 2017 – Apr 2018) (Delivered to the Navy)• Objective: Train operators on Landing Craft Machines using VR• Outcome: Enhanced training realism and interaction for ship control• Technologies: 1) Developed multiplayer cooperative systems - Cabin interactions using a Leap Motion and a Nintendo remote - Precise controls with two joysticks and a keyboard

1. Milk and Cereal (Aug 2014 – Feb 2015) (Delivered to Gwacheon National Science Museum)• Objective: Provide math and science education for elementary students• Specifications: Featured 7 games, difficulty based on leveling, user registration, ranking system, and ads• Development Environment: Windows 7, Unity 5.x.x, Visual Studio 2010• Programming Language: Unity C#• Role: Planned and developed 4 out of 7 games, handled Unity development, maintenance, and updates• Target Devices: Android, iOS• Outcome: Provided an engaging and effective learning environment for elementary students, receiving high user satisfaction• Technologies: 1) Game Development & Platform Support - Developed 7 games using Unity, compatible with both Android and iOS platforms 2) User Experience & Expansion Features - Designed a leveling system, user registration, and ranking features to offer a personalized experience - Included multi-language support for potential global expansion2. Math Travel (Mar 2014 – Aug 2014) (Delivered to Gwacheon National Science Museum)• Objective: Provide math education for elementary students• Specifications: Featured 6 games, difficulty based on leveling, user registration, ranking system, and ads• Development Environment: Windows 7, Unity 5.x.x, Visual Studio 2010• Programming Language: Unity C#• Role: Planned and developed 4 out of 6 games, handled Unity development, maintenance, and updates• Target Devices: Android, iOS• Outcome: Combined math learning with games, enhancing student interest and making it an effective educational tool through leveling and competitive systems• Technologies: 1) Game Development & Platform Support - Developed games compatible with both Android and iOS platforms 2) User Experience & Learning Motivation System - Implemented leveling and ranking systems to motivate users, adding competition to enhance learning engagement