HIUMC/UMC-9th-Web-Study
Sep 2025 – Dec 2025
4 Months active
Languages Used
CSSHTMLJavaScriptSVGTypeScriptJSON
Technical Skills
API IntegrationAxiosCSSCSS GridCSS Grid LayoutCSS Styling
goody
PROFILE
Goody
Over four months, Jaehyun Kim developed a scalable front-end foundation for the HIUMC/UMC-9th-Web-Study repository, delivering 26 features across React and TypeScript projects. He established robust scaffolding with Vite and ESLint, enabling rapid feature iteration and code quality enforcement. Jaehyun implemented dynamic navigation, responsive UI components, and a single-page movie app with API integration, loading states, and error handling. He enhanced security by refining environment variable management and built user authentication with validation and token storage. His work included state management using Context API, Redux, and Zustand, resulting in maintainable, extensible codebases and improved user experience throughout the project.
Overall Statistics
Feature vs Bugs
90%Features
Repository Contributions
48Total
Bugs
3
Commits
48
Features
26
Lines of code
173,713
Activity Months4
Your Network
12 people
Work History
December 2025
3 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — Delivered foundational front-end scaffolding for HIUMC/UMC-9th-Web-Study. Established a baseline React + TypeScript project with Vite, integrated ESLint, and added a minimal HTML template to render the app. This scaffolding enables rapid feature development while maintaining code quality. No major bug fixes were completed this month; the focus was on solidifying the development foundation and traceable progress through commit milestones. The work positions the project for subsequent feature work and aligns with standard modern front-end practices.
3 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — Delivered foundational front-end scaffolding for HIUMC/UMC-9th-Web-Study. Established a baseline React + TypeScript project with Vite, integrated ESLint, and added a minimal HTML template to render the app. This scaffolding enables rapid feature development while maintaining code quality. No major bug fixes were completed this month; the focus was on solidifying the development foundation and traceable progress through commit milestones. The work positions the project for subsequent feature work and aligns with standard modern front-end practices.
December 2025
November 2025
26 Commits • 18 Features
Nov 1, 2025November 2025: Delivered a robust LP discovery and content lifecycle flow, enhanced user interaction features, and improvements to authentication/profile workflows, while advancing state management practices. Major deliveries include: LP List/Details UI with infinite scroll, LP post creation modal, and LP detail edit/delete; a commenting system with full functionality and a like button; search debouncing for faster, cleaner UX; and auth/profile improvements with useMutation refactor and a new My Page mutation. Mission milestones 1–3 were completed, complemented by Zustand/useReducer practice and modalSlice-based UI architecture. Minor quality fixes (typo and code-review fixes) boosted reliability. These efforts deliver tangible business value: faster content creation, higher user engagement, and a more maintainable codebase for future iterations.
November 2025
26 Commits • 18 Features
Nov 1, 2025November 2025: Delivered a robust LP discovery and content lifecycle flow, enhanced user interaction features, and improvements to authentication/profile workflows, while advancing state management practices. Major deliveries include: LP List/Details UI with infinite scroll, LP post creation modal, and LP detail edit/delete; a commenting system with full functionality and a like button; search debouncing for faster, cleaner UX; and auth/profile improvements with useMutation refactor and a new My Page mutation. Mission milestones 1–3 were completed, complemented by Zustand/useReducer practice and modalSlice-based UI architecture. Minor quality fixes (typo and code-review fixes) boosted reliability. These efforts deliver tangible business value: faster content creation, higher user engagement, and a more maintainable codebase for future iterations.
October 2025
6 Commits • 3 Features
Oct 1, 2025October 2025 — HIUMC/UMC-9th-Web-Study: Delivered secure, user-centric features with solid engineering practices that reduce risk and accelerate product delivery. Highlights include: (1) Security hardening: removed environment files and updated .gitignore to prevent exposure of API keys; (2) Movie Credits UI/UX Improvement: refactored to fetch and render cast/crew with loading and error states; (3) Movie Detail Page: built with custom hooks for data fetching and routing to show metadata and credits; (4) User Authentication System: implemented login/signup with validation, API calls, and token storage. Technologies/skills demonstrated: React, custom hooks, react-hook-form, zod, API integration, and secure environment/config handling.
6 Commits • 3 Features
Oct 1, 2025October 2025 — HIUMC/UMC-9th-Web-Study: Delivered secure, user-centric features with solid engineering practices that reduce risk and accelerate product delivery. Highlights include: (1) Security hardening: removed environment files and updated .gitignore to prevent exposure of API keys; (2) Movie Credits UI/UX Improvement: refactored to fetch and render cast/crew with loading and error states; (3) Movie Detail Page: built with custom hooks for data fetching and routing to show metadata and credits; (4) User Authentication System: implemented login/signup with validation, API calls, and token storage. Technologies/skills demonstrated: React, custom hooks, react-hook-form, zod, API integration, and secure environment/config handling.
October 2025
September 2025
13 Commits • 4 Features
Sep 1, 2025Month: 2025-09 — Summary of delivery, impact, and technical execution for HIUMC/UMC-9th-Web-Study. Key features delivered: - Navigation Bar Foundation: established scaffolding and a test environment, including a test HTML page and a Navbar.html replacement to prepare for navbar styling. - Front-end UI Playground: implemented a responsive navigation bar, CSS grid layout example, and multiple to-do apps; included refactors for to-do UI and grid layout improvements. - Mission-based React/TS Projects: added two Vite-based React/TypeScript projects demonstrating a Context API-powered To-Do app (mission1) and a theme switching example (mission2). - Movies SPA with Routing, API Data, and Details: built a React/TypeScript SPA with home listings, dynamic movie routes, and a detail view powered by the TMDB API, with loading and error handling. Major bugs fixed: - Typo fixes and minor refactors across UI components; enhanced test scaffolding and test HTML/page stability; resolved initial navigation scaffolding inconsistencies as part of the foundation work. - Various small corrections during weekly iterations (0주차/1주차 수정, 오타수정) to improve stability and consistency. Overall impact and accomplishments: - Established a scalable frontend foundation with reusable navigation and UI patterns, enabling faster feature delivery across multiple React/TS projects. - Delivered end-to-end examples of state management (Context API), theming, routing, and API integration, promoting maintainable and extensible codebases. - Improved user experience with a responsive UI, dynamic routes, and robust data handling, aligning with business goals for a cohesive frontend platform. Technologies/skills demonstrated: - React, TypeScript, Vite; Context API; React Router; CSS Grid; API integration (TMDB) with loading and error handling; test scaffolding and iterative refactors; responsive UI patterns.
September 2025
13 Commits • 4 Features
Sep 1, 2025Month: 2025-09 — Summary of delivery, impact, and technical execution for HIUMC/UMC-9th-Web-Study. Key features delivered: - Navigation Bar Foundation: established scaffolding and a test environment, including a test HTML page and a Navbar.html replacement to prepare for navbar styling. - Front-end UI Playground: implemented a responsive navigation bar, CSS grid layout example, and multiple to-do apps; included refactors for to-do UI and grid layout improvements. - Mission-based React/TS Projects: added two Vite-based React/TypeScript projects demonstrating a Context API-powered To-Do app (mission1) and a theme switching example (mission2). - Movies SPA with Routing, API Data, and Details: built a React/TypeScript SPA with home listings, dynamic movie routes, and a detail view powered by the TMDB API, with loading and error handling. Major bugs fixed: - Typo fixes and minor refactors across UI components; enhanced test scaffolding and test HTML/page stability; resolved initial navigation scaffolding inconsistencies as part of the foundation work. - Various small corrections during weekly iterations (0주차/1주차 수정, 오타수정) to improve stability and consistency. Overall impact and accomplishments: - Established a scalable frontend foundation with reusable navigation and UI patterns, enabling faster feature delivery across multiple React/TS projects. - Delivered end-to-end examples of state management (Context API), theming, routing, and API integration, promoting maintainable and extensible codebases. - Improved user experience with a responsive UI, dynamic routes, and robust data handling, aligning with business goals for a cohesive frontend platform. Technologies/skills demonstrated: - React, TypeScript, Vite; Context API; React Router; CSS Grid; API integration (TMDB) with loading and error handling; test scaffolding and iterative refactors; responsive UI patterns.
Activity
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Quality Metrics
Correctness88.2%
Maintainability86.4%
Architecture85.6%
Performance86.2%
AI Usage23.4%
Skills & Technologies
Programming Languages
CSSHTMLJSONJavaScriptSVGTypeScript
Technical Skills
API IntegrationAPI developmentAPI integrationAxiosCSSCSS GridCSS Grid LayoutCSS StylingComponent DesignComponent-Based ArchitectureContext APICustom HooksDynamic RoutingESLintESLint Configuration
Repositories Contributed To
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