Sang Hoon Sung
Senior Software Engineer AI Agent Developer Product Builder
Extensive experience designing, building, and shipping commercial software across macOS, iOS, web, and cloud platforms. Currently focused on Agentic AI systems and AI-powered productivity software.
AI systems and commercial applications. Detailed case studies will be added as content is finalized.
Microsoft 365 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.
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.
Local agent that does the work you ask for — plans the job, runs it on your machine, and delivers the result. Not just chat.
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.
Sang Hoon Sung is an experienced software engineer and product builder with a background in commercial application development across desktop, mobile, web, and cloud platforms.
His work spans taking software from development through to production, with a focus on shipping reliable products used by real customers.
He is currently focused on AI agents and AI-powered productivity software, applying engineering and product experience to Agentic AI systems.
Open to senior and staff-level software engineering and AI roles. Prefer LinkedIn for professional inquiries.