Sunghoon Choi

- Manage ONNX Runtime model shipping team to publish Microsoft internal models and popular AI/ML models to Bing/Office/Azure platform, Hugging Face, and 3rd party - Manage ONNX Runtime GenAI team to support LLM models - Manage Foundry Local project to provide a simple interface for model distribution and inferencing on consumer devices - Migrated onnx.js to ONNX Runtime repository for one source and added React-Native API into ONNX Runtime - Managed ONNX Runtime training team to accelerate training in AzureML - Managed ACPT team to publish Azure Container for PyTorch

- Commercialized Bixby Q&A service using in-house knowledge extraction, knowledge base, query-answering and machine reading comprehension system - Built an on-device search platform by Implanting Lucene into mobile device and integrated with core apps such as contact, gallery, finder, notes and more - Built a cloud-based search platform using ElasticSearch to provide advanced search experience for various Samsung’s own services such as Galaxy Store, Game Launcher and more - Commercialized Samsung Daily, personalized content feeding platform partnering with more than 60 content providers globally - Responsible for Chromium based in-house mobile browser, Samsung Internet Browser, which is used by more than 500 million devices monthly and is a best profitable product among Samsung services yet

- Created portable ranker framework on top of Bing relevance engine - Designed and developed passage ranking system and online experimental pipeline - Designed and developed Napa deep search platform

- Designed and developed category and location search on top of inverted index - Developed a framework to ingest and serve hundreds of billions of social data and OneDrive/OneNote data - Created windows store data ingestion platform

• Designed and developed multimedia advertisement platform using Java on top of AWS • Developed visual engine war package using Java • Evaluated user management system on top of GAE • Designed and developed scalable and reliable fashion search platform using Java on top of AWS

• Developed and enhanced Yahoo crawling system • Ported the existing Yahoo featured version of Mozilla 2 to Mozilla 3.6 • Developed alpha stage of Hosted Vertical Crawl system using Yahoo crawling system and Hadoop • Evaluated Lookaside index serving project on top of Yahoo application engine • Designed and developed key libraries in Unified Gateway

• Designed the architecture for Unlimited Game Network platform • Established Arcadia’s homegrown C++ framework libraries. • Designed and developed User Management System and Session Management system, which can handle over 1 million concurrent clients. • Created a distributed, highly scalable and reliable Region Management System and software Load Balancer. • Created a real-time Client Filtering System. • Created a Network Abstract Layer, which manages the connection among servers automatically. • Designed and developed Game Room Management system. • Created a Peer-to-Peer Game architecture, which supports faster and reliable environment. • Designed and developed network communication library on Windows XP

• Served a key role in designing and developing the WiseNut’s entire crawling system and query handler system on Windows 2000. • Created a distributed and highly scalable web crawler with custom-version of DNS server and distributed message queueing system, which can crawl 60M pages/day. • Developed the web page repository that can store terra-bytes of documents. • Developed the rate-controller component that ensures to crawl billions of pages without imposing excessive loads on Web servers. • Created a distributed and highly scalable query handler that could process hundreds millions of queries per a day. • Created a cache library that could retrieve and store result queries fast. • Worked on improving search capacity by enhancing WiseNut’s query retrieval algorithm. • Ported a Windows based query handler to Linux • Established WiseNut’s homegrown C and C++ framework libraries.

• Served a key role in designing and developing the WiseNut’s entire crawling system and query handler system on Windows 2000. • Created a distributed and highly scalable web crawler with custom-version of DNS server and distributed message queueing system, which can crawl 60M pages/day. • Developed the web page repository that can store terra-bytes of documents. • Developed the rate-controller component that ensures to crawl billions of pages without imposing excessive loads on Web servers. • Created a distributed and highly scalable query handler that could process hundreds millions of queries per a day. • Created a cache library that could retrieve and store result queries fast. • Worked on improving search capacity by enhancing WiseNut’s query retrieval algorithm. • Ported a Windows based query handler to Linux • Established WiseNut’s homegrown C and C++ framework libraries.

• Designed and developed the Mobile Position System for n.TOP Brand of SK Telecom based on UNIX environment with C and Sybase. • Created a Map Database Server based on UNIX environment with C. • Created a Middleware Server and client libraries for Sybase and Infomix based on UNIX environment with C. • Designed and Developed the Vehicle Assistance Center System for Daewoo Car Service based on UNIX and Windows NT environment with C, Visual Basic and Informix. • Created Thinkware’s homegrown C framework libraries.

• Created a Bulletin Board System with ASP based on Windows NT environment. • Designed and Developed the Korean Telecom Web Service for KT based on UNIX environment with C and Illustra