Frontend Lead & Product Engineer specializing in multi-tenant Next.js monorepos, type-safe BFF pipelines, and Rust desktop developer tooling.

Korean Version · delete-horizon.com · Contact · Suwon / Seoul, South Korea

"When domains get complex, I start with structure — cutting repeat cost through shared modules, type-safe BFF pipelines, and infrastructure-level developer tooling."

Agentic DX Desktop Application for Local Network & Infrastructure Orchestration

• Cross-Platform Desktop Tool: Built with Rust & Tauri 2 as a lightweight single binary, reproducing production-grade networking and proxy environments locally.
• Built-in Network Engine: HTTPS MITM proxy, API mocking sandbox, WinDivert-based Transparent Proxy (capturing runtime traffic from processes ignoring OS proxy), and mobile tunneling.
• AI Agent Integration: Ships with a dedicated headless CLI (hgc) and Agent Skill layers enabling AI agents (Cursor, Claude Code, Gemini) to inspect traffic, mock APIs, and orchestrate local infrastructure.
• Real-Time Team Sync: Team workspace domain/mock rule synchronization powered by Supabase Realtime and SQLite FTS5 search indexing.

Live Site · GitHub Repository

Serverless Micro-Frontend App Mesh across Independent PWA Surfaces

• Serverless MFA Mesh: Connects independently deployed PWAs across separate domains using a lightweight shared embed protocol without requiring server-side rendering orchestration.
• Local-First Architecture: Modularized travel, hotel, and auth surfaces with IndexedDB-backed offline capabilities and static hosting on Cloudflare Pages.

travel.delete-horizon.com · hotel.delete-horizon.com · auth.delete-horizon.com

Dispatched to Modetour Next-Gen Web Platform (B2C / Best Partner / Online Best Partner)

• Multi-Tenant Monorepo: Re-architected single B2C into core, web-b2c, and web-onbp packages within a pnpm + Turborepo monorepo, establishing single-source operations for ~300+ partner (ONBP) sites.
• Major Framework Migration: Led full upgrades from Next.js v12 (Pages) to v15, React 19, and Ant Design v4 to v5 (eliminating legacy Less build chains and standardizing Design Tokens).
• Type-Safe BFF Pipeline: Built Hono-based BFFs (@b2c/server, @onbp/server) with Zod/TypeBox validation pipelines, strictly decoupling API changes from the UI via FE Model/Mapper layers.
• Core Domain & Payment: Decoupled payment UI into an independent MFA embed module (payment.modetour.com); migrated revenue-critical domains (Hotel, Flight, Search, Booking).
• Engineering DX: Built internal proxy-tool for instant environment switching across Dev/Stage/Prod and airline/hotel sandboxes; authored team-wide Cursor/Claude Agent guidelines.

YesCMS B2B Cash Management System & KFTC Open Banking

• Legacy C/S to Web Migration: Re-architected a legacy Windows C/S desktop client into a modern React web admin (~30 major enterprise screens).
• KFTC Open Banking Integration: Owned frontend state machines, data validation, and exception/retry flows for core ledger and transaction domains.
• Performance & Automation: Applied table virtualization for high-density financial data streams to stabilize DOM memory; automated tax-invoice (Popbill) workflows.

Creator Commerce Platform & Admin Ecosystem

• CRA to Next.js Monorepo: Migrated 3 CRA services (Commerce, Admin, Studio) to Next.js, introducing SSR/SSG for enhanced SEO visibility and routing performance.
• End-to-End Feature Ownership: Introduced Next.js BFF + shared Prisma types across the monorepo, empowering frontend engineers to deliver features end-to-end without waiting for backend changes.
• Ops Pipelines: Implemented CMS content type systems, recursive Excel I/O parsers, and serverless Zip-encrypted batch exports.

Languages     │ TypeScript · JavaScript · Rust · SQL
Frontend      │ Next.js (v12~v15) · React 19 · TanStack Query · Zustand · Tailwind CSS · PWA
Backend & BFF │ Hono · Next.js API Routes · Zod · TypeBox · Prisma · SQLite
Desktop & DX  │ Tauri 2 · Rust · MITM Proxy · WinDivert · Cursor Agent Skills · Vite · Biome
Architecture  │ Multi-tenant Monorepo · Turborepo · pnpm · Micro-Frontend · FSD · Local-First
Infra & Tools │ Cloudflare Pages · Supabase · Azure DevOps · Docker · Git