I'm Woohyun Park, a developer who removes friction.

Established a Shared Foundation for Colleagues to Build and Verify Consistent UI

• Centralized control of icon size and color through a component-reference API and automated SVG normalization and component generation to maintain consistent size and color as icons are added or changed
• Replaced one-at-a-time component state comparisons with Storybook state matrices and placeholders to compare state combinations at a glance, using Chromatic to verify visual differences before and after changes
• Redesigned a Drawer with growing screen-specific options and branches using named slots and composable components, separating shared layout and interactions from screen content and business logic across eight business areas
• Implemented Tiptap mention and image-resizing extensions for the different editing needs of contracts, emails, and admin screens, composing them by use case to selectively reuse the required features
• Consolidated repeated UI and color and typography tokens into shared monorepo packages to apply component and style changes consistently across four apps

Identified the Causes of Interrupted User Workflows and Improved Loading and State Management

• Added Base64 LQIP placeholders and a single-request flow for original landing images to avoid empty areas while loading, reducing time to first visual information by 72% versus the default Image component
• Used React Activity to preserve Drawer input values and scroll positions that reset on tab changes, combining prerendering and list virtualization to reduce content preparation time by 81% on first visits and 42% on return visits
• Prioritized visible columns on a request board and loaded off-screen columns sequentially, reducing entry requests by 65% and initial screen wait time by approximately 23%
• Applied Suspense and shared boundaries to a dashboard where loading checks for multiple APIs were mixed into metric calculations, separating calculation logic from loading and error handling and standardizing section-level presentation

Reduced Development Delays and Repetitive Work Through Shared Structures and Validation Criteria

• Replaced direct shared-source references with prebuilt packages to reduce build time by 25%, and removed unnecessary barrel export dependencies to shrink the initial shared chunk by 77%
• Reorganized API, state, and UI code scattered across technical folders using FSD, documenting and linting layer responsibilities and import rules to standardize feature navigation and dependency review
• Consolidated domain-specific API response transformations into shared mappers and added Zod validation at key query boundaries to reuse transformation rules and detect malformed responses before they reach the UI

Systematized Development and Operations Processes So Colleagues Can Review Information and Decision Rationale Together

• Enhanced a Claude Code plugin with interviews, specifications, and design reviews to preserve implementation intent and decision rationale, aligning TDD, QA, and pull requests around the same requirements and decision records
• Introduced AI summaries of commits and pull requests promoted to production to clarify what deployment notifications alone could not, automatically sharing release notes in Slack with user-facing changes separated from development details
• Applied business-specific error classification and deduplication policies in Sentry, where expected errors and operational failures had been mixed, to surface errors requiring action

Next.js, TypeScript, TanStack Query, RHF, Zod, Chakra, Zustand, Turborepo, Storybook, Sentry

Identified Improvements to the Internal Work Environment and Carried Them Through from Planning to Development

• Planned, designed, and built an internal platform to make appreciation, feedback, and event participation part of everyday work, linking Slack mission verification with point and sticker rewards to encourage colleagues to participate
• Used profile and company information registered on the platform to create business cards and email signatures, automating print files, signature images, and HTML so employees can download them without separate production requests