# Sang-hyeb(Sam) Lee, Ph.D. > Software Engineer | Medical Imaging | Machine Learning Location: San Francisco Bay Area, United States Profile: https://flows.cv/sanghyebsam o Over ten years of experience in C/C++ software development on Linux/Windows. o Strong background in GPU programming with over ten years of image reconstruction and simulation software development experience. o Numerous publications and patents in medical imaging o 2014 University of Tennessee Chancellor’s Honor, Extra Professional Promise Award recipient o 2011 ~ 2015 Ron-nutt (founder of CTI) Medical Imaging Fellowship recipient ## Work Experience ### Staff Software Engineer @ GE HealthCare Jan 2023 – Present | San Mateo County, California, United States ### Staff Software Engineer @ Caption Health Jan 2021 – Present | San Francisco Bay Area ### R&D Software Consultant @ QT Ultrasound LLC Jan 2020 – Jan 2021 | San Francisco Bay Area - Image post processing using VTK/ITK/C++ - Transmission and reflection ultrasound image reconstruction ### Senior Software Engineer @ Magnetic Insight Inc Jan 2019 – Jan 2020 | San Francisco Bay Area - Optimized the performance of simulation code in Python. - Participated in a project to port the software package from Windows to NixOS(Linux). ### Principal Software Engineer @ QT Ultrasound LLC Jan 2018 – Jan 2019 | San Francisco Bay Area (1) Designed and implemented breast density calculation software for quantitative ultrasound transmission imaging modality using unsupervised machine learning algorithm (Fuzzy C-Means). (2) Participated in the optimization of ultrasound transmission (Inverse scattering) and reflection (ray tracing) image reconstruction algorithm. (3) Implemented functionalities on the QT scanner to allow the technician to view and analyze the DICOM images reprocess it using different processing scheme. (4) Designed and implemented segmentation and image processing features in DICOM medical image viewer using VTK/ITK/QT/C++/CMAKE. (5) Implemented live b-mode ultrasound scout scan prototype (6) Successfully ported all the C/C++ software and device drivers from Ubuntu14.04 to Ubuntu18.04 (7) Participated in a project to build a framework to process a batch of image reconstruction tasks in AWS cloud. ### Senior Software Engineer @ QT Ultrasound LLC Jan 2015 – Jan 2018 | San Francisco Bay Area (1) Re-designed and implemented the reflection (ray-tracing) image reconstruction software using C/C++/CUDA/pthread on Linux. Optimized code runs 6 times faster with consistent output. (2) Improved data acquisition and motion control software for ultrasound medical imaging device using Galil motion controllers and Linux device drivers. (3) Implemented a web-based performance visualization and device control framework using JavaScript/Node.js/C++ ### Graduate Research Assistant @ University of Tennessee, Knoxville Jan 2014 – Jan 2015 | Knoxville, Tennessee, United States ⋄ Co-invented novel motion correction techniques using particle tracking ⋄ Successfully designed and implemented a head and neck motion correction program for clinical PET technique in C/C++ and boost library. ⋄ Optimized an existing phase-based gating program by reducing its execution time (50 times speed up) by re-writing the code in C/C++ and boost library and eliminating redundant memory usage. ### Graduate Teaching Assistant @ University of Tennessee, Knoxville Jan 2011 – Jan 2014 | Knoxville, Tennessee, United States * Certified by International Teaching Assistant(ITA) Testing Program for unconditional classroom teaching CS160 (Computer Organization) - 2011 Fall CS340 (Software Engineering) - 2012 Spring CS160 (Computer Organizaiton) - 2012 Fall CS302 (Data Structures / Algorithms II) - 2013 Spring CS140 (Data Structures / Algorithms I) - 2013 Fall CS302 (Data Structures / Algorithms II) - 2014 Spring ### Graduate Research Assistant @ Oak Ridge National Laboratory Jan 2013 – Jan 2015 | Oak Ridge, Tennessee, United States - Developed a web-based super performance analysis and visualization package for TITAN(world's second fastest super computer) of Oak Ridge National Laboratory and TACHYON2 of Korea Institute of Science and Information Technology using HTML5, JavaScript, and MongoDB. - Designed and implemented a path-based profiling and recommendation using JavaScript, Python, and Neo4J graph database ### System Software Engineer @ Samsung Thales Corporation Jan 2009 – Jan 2011 | South Korea Participated in the design and implementation of a real-time embedded data sharing middleware for Korean navy submarine combat system using C++, STL and boost library on Linux and VxWorks operating systems. ### Information Management Officer (IMO) @ United States Forces Korea (USFK) Jan 2006 – Jan 2008 | Seoul o Led an information management team to maintain part of U.S. Army NIPERNET. o Acted as a non-commissioned officer in charge of a unit consisting of 50 soldiers o Awarded an Army Commendation Medal (ARCOM) for service in U.S. army ### Lab demonstrator @ University of Otago Jan 2002 – Jan 2003 | Dunedin, New Zealand Administered undergraduate computer lab in algorithm and data structure course and JAVA programming course. ## Education ### Master of Information and Data Science (MIDS) in Data Science UC Berkeley School of Information ### Doctor of Philosophy (Ph.D.) in Computer SCience University of Tennessee, Knoxville ### Bachelor of Science with First Class Honours in Computer Science University of Otago ## Contact & Social - LinkedIn: https://linkedin.com/in/sambolee - Portfolio: https://drminix.github.io/ - Portfolio: https://www.youtube.com/channel/UCddBYj77GVSBNFd-25_iAhg?view_as=subscriber --- Source: https://flows.cv/sanghyebsam JSON Resume: https://flows.cv/sanghyebsam/resume.json Last updated: 2026-04-12