Sang Hoon Sung
Senior Software Engineer AI Agents Product Engineering
Building production AI agents that execute real-world work across desktop, Microsoft Office, and enterprise systems.
Production-oriented AI products, enterprise systems, and commercial apps shipped to customers.
In production
AI Agent for Microsoft Office
MS Office AI agent for Word, Excel, PowerPoint, and Outlook. Ask in plain language to clean tables, translate selections, build slides, or summarize mail — only structured context goes to the model, and changes run locally on your PC.
In production
General-purpose AI Work Agent
Local agent that does the work you ask for — plans the job, runs it on your machine, and delivers the result. Not just chat.
Production system · Enterprise deployment
AI-powered Email Security for Microsoft Exchange
AI-powered inbound spam and phishing filter in front of Microsoft Exchange. Layered auth and scans, LLM SCL 0–9, then relay with policy headers.
Mac disk usage analyzer on the App Store. Scan folders, visualize with tree maps and charts, find large and duplicate files, and reclaim space.
Dual-pane Mac file manager with tabs, fast search, zip, and multithreaded copy/move/delete. On the Mac App Store since 2013.
Mac image viewer with thumbnails, slideshow, light editing, and built-in file management. On the Mac App Store since 2013.
Mac clipboard history manager with search, multi-clip paste, shortcuts, and iCloud sync. On the Mac App Store since 2019.
iPhone music and video player that downloads from Google Drive, Dropbox, OneDrive, and iCloud — with playlists and CarPlay.
Mac comic and image viewer with bookshelf UI, CBZ/CBR/archive support, bookmarks, and reading modes for manga and webtoons. On the Mac App Store since 2014.
Capabilities drawn from shipped App Store products and current AI agent systems.
I am a senior software engineer and product builder with extensive experience shipping commercial software across desktop, mobile, web, cloud, and enterprise environments.
My current focus is Agentic AI — building production systems that move beyond chat to plan, execute, recover, and complete real-world work.
I am the creator of Sidekick, a family of AI products spanning desktop work automation, Microsoft Office, and browser workflows.
Open to senior and staff-level software engineering and AI roles. Prefer LinkedIn for professional inquiries.