Internal AI Agent Platforms (Levinci Co., Ltd · Software Engineer)
◆
What I Built
•Designed hybrid retrieval architecture combining Knowledge Graph and vector search, optimized with caching and parallel processing to achieve ~1.5–2s time-to-first-token (TTFT) while maintaining ~85–90% retrieval accuracy.
•Built internal multi-agent AI framework with role-based workflows, reducing average task completion time by ~40% and achieving ~90% task success rate, enabling internal teams to collaboratively build projects with AI agents.
•Designed multi-tenant architecture and enterprise-grade license/role management, managing 5+ isolated workspaces with zero cross-tenant data incidents.
•Built AI Assistant for real-time chat support and fast information retrieval, applying the AIDA framework to guide user conversations toward action, with interactive map rendering to visualize location-based results, achieving ~2.5–3s average response time and ~85% query resolution accuracy.
5+ isolated workspaces, zero cross-tenant incidents
AI chat assistant: ~85% query resolution accuracy
POS Systems (Levinci Co., Ltd · Retail & F&B)
◆
What I Built
•Implemented local state persistence for cart/order data, allowing POS to continue operating during network interruptions with zero transaction loss, auto-syncing within seconds of reconnect.
•Built optimistic UI updates for cart and checkout actions, reducing perceived action latency from ~600ms to under 100ms while confirming with server in the background.
•Structured frontend state management to handle 30+ concurrent orders/tables without UI lag or state conflicts.
Offline-first, zero transaction loss, auto-sync
Checkout latency: ~600ms → <100ms
30+ concurrent orders/tables, no state conflicts
Social Platforms (Levinci Co., Ltd · Software Engineer)
◆
What I Built
•Built timestamp-based product tagging applied across 100+ masterclass videos, enabling in-video shopping tied to lesson context.
•Developed CV builder with dynamic Canvas rendering, generating resumes from user data across 5+ customizable templates.
•Optimized news feed delivery with Redis caching and cursor-based pagination, reducing database load by ~35% and cutting average feed load time from ~1s to ~400ms under high-traffic conditions.
In-video shopping across 100+ videos
Canvas-based CV builder, 5+ templates
Feed load time: ~1s → ~400ms, −35% DB load
ERP Systems (Levinci Co., Ltd · Software Engineer)
◆
What I Built
•(Construction) Built cost-tracking module comparing budgeted vs. actual spend per work item, surfacing overruns 2–3 weeks earlier, applied across 10+ construction projects.
•(Education) Built room allocation system for dormitory check-in/check-out cycles, automating bed assignment for 300+ dormitory rooms and cutting manual processing time by ~60%.
•Designed hybrid retrieval architecture combining Knowledge Graph and vector search, optimized with caching and parallel processing to achieve ~1.5–2s time-to-first-token (TTFT) while maintaining ~85–90% retrieval accuracy.
•Built internal multi-agent AI framework with role-based workflows, reducing average task completion time by ~40% and achieving ~90% task success rate, enabling internal teams to collaboratively build projects with AI agents.
•Designed multi-tenant architecture and enterprise-grade license/role management, managing 5+ isolated workspaces with zero cross-tenant data incidents.
POS Systems
•Implemented local state persistence for cart/order data, allowing POS to continue operating during network interruptions with zero transaction loss, auto-syncing within seconds of reconnect.
•Built optimistic UI updates for cart and checkout actions, reducing perceived action latency from ~600ms to under 100ms while confirming with server in the background.
•Structured frontend state management to handle 30+ concurrent orders/tables without UI lag or state conflicts.
Social Platforms
•Built timestamp-based product tagging applied across 100+ masterclass videos, enabling in-video shopping tied to lesson context.
•Developed CV builder with dynamic Canvas rendering, generating resumes from user data across 5+ customizable templates.
•Optimized news feed delivery with Redis caching and cursor-based pagination, reducing database load by ~35% and cutting average feed load time from ~1s to ~400ms under high-traffic conditions.
ERP Systems
•(Construction) Built cost-tracking module comparing budgeted vs. actual spend per work item, surfacing overruns 2–3 weeks earlier, applied across 10+ construction projects.
•(Education) Built room allocation system for dormitory check-in/check-out cycles, automating bed assignment for 300+ dormitory rooms and cutting manual processing time by ~60%.
SIDE PROJECTS
Personal Portfolio
2024 - Present
App Details
Astro + Tailwind static portfolio
Sidebar profile & experience timeline
Development Responsibilities
Designed a recruiter-friendly layout with collapsible experience cards.
Structured content as data-driven modules for easy updates.
