Yeojun Han
Building AI developer tools at Microsoft.
About
I work on Visual Studio Copilot at Microsoft, with a focus in AI model integration, evaluation, and AI governance for developer tools.
Recently, I was a speaker at VSLive 2026 about practical AI workflows in Visual Studio.
I graduated from UBC in 2025 with a B.Sc. in Computer Science with Distinction. Along the way, I helped organize the sixth iteration of cmd-f hackathon with nwPlus for over 200 underrepresented students, held finance and marketing roles with UBC Women in Computer Science, and held an internal executive role in the Undergraduate Statistics Society.
I received the Bit Quill Women in Computer Science Award in 2023 and 2025, and the Community Service Award in 2024.
Outside of work, I like rock climbing, and pottery.
Projects
- Noise in the Network
Trained and evaluated image classifiers on CIFAR-10 using ensemble adversarial training to improve robustness to adversarial attacks.
- WAiSTE
First place at the Microsoft Intern Hackathon. Point, identify, and sort with your phone camera.
- AmplifAI
Real time speech augmentation for people with speech disorders, bridging the communication gap.
- Actually
Real time fact checking to counter misinformation in livestreams.
Experience
- Microsoft / Visual Studio Copilot
- Software Engineer II
- Sep 2026 - present
- Software Engineer I
- Aug 2025 - Aug 2026
- UBC, Undergraduate HCI research assistant
- Jan 2025 - May 2025
- UBC, Undergraduate teaching assistant
- Jan 2022 - May 2025
- CPSC 425: Computer vision
- CPSC 330: Applied machine learning
- CPSC 210: Software construction
- Ansys / OpticStudio
- Software engineering intern
- Sep 2024 - Dec 2024
- Microsoft / Visual Studio Copilot
- Software engineering intern
- May 2024 - Aug 2024
- Microsoft / Azure SDK / API Reviewer
- Software engineering intern
- May 2023 - Aug 2023
- Microsoft / Azure SDK / Engineering Systems
- SWE & PM intern
- May 2022 - Aug 2022