Eunryong Lee

C# · .NET Framework · WPF · 3D CAD

• Maintained and improved a 3D CAD application for implant and abutment design using C#, .NET Framework, and WPF.
• Implemented STL-based import/export features for 3Shape integration and checked compatibility by comparing exported files.
• Improved crown rotation-handle positioning and crown-stretch functionality; validated changes through the team's pull-request, alpha QA, and beta-test workflow.
• Investigated drill-clearance correction across geometry samples, evaluated vertex/radius/direction-vector approaches and MeshLib options, documented accuracy and performance limits, and handed off enhancement requirements to the lead developer.

React · Cloudflare Workers · Gemini · Google DeepMind & Kaggle hackathon project

• Designed feature requirements and multimodal prompt/structured-response formats for analyzing math questions and student work from text and images.
• Extended an AI Studio prototype with a React client and a Cloudflare Worker /api/analyze backend, adding request, body, and image validation alongside access control, rate limiting, and normalized errors.
• Designed a parallel core/extensions analysis flow and schema/runtime checks, retry handling, and result merging to validate structured model responses.
• Selected for the Overall Track Top 50 in the Google DeepMind and Kaggle “Vibe Code with Gemini 3 Pro in AI Studio” hackathon.

3-person team · Three.js · JavaScript · WebGL · Shapely

• Implemented collision detection for furniture placement, modeling plan-view intersections with 2D AABBs on the XZ plane and Shapely box.intersects.
• Connected room-boundary and furniture-overlap checks to placement and rotation constraints in the team's 3D interface.
• Compared backend collision checks with frontend conditions and verified collision, boundary, and layout cases.

C · C++ · POSIX · pthread · mutex · kqueue · netcat

• minishell: Implemented pipeline execution and built-in commands; manually tested environment-variable and pipeline behavior.
• IRC server: Implemented message parsing from tokenization through command and parameter handling, then tested protocol scenarios with nc.
• philo / ls: Implemented pthread/mutex synchronization and directory listing with readdir/lstat; compared outputs with the system ls.

Project-based learning, peer evaluation, and collaborative software development.