About Me

I am an Engineering Manager at Roblox, leading the Privacy Infra team within InfoSec.

I received my Ph.D. in Computer Science from Virginia Tech, where I was advised by Prof. Danfeng Yao. My research focuses on applying machine learning techniques to network anomaly detection, particularly in identifying stealthy malicious network requests. I am also interested in data visualization and mobile security.

Outside of research, I enjoy reading and playing tennis, and I’m an avid photography enthusiast, especially when traveling.

Experience

• Roblox, San Mateo, CA

  • [2025/10 - Present]  Engineer Manager, InfoSec Privacy team

  • [2025/1 - 2025/9] Tech lead manager, InfoSec Privacy team

  • [2023/05 - 2024/12] Senior Software Engineer, InfoSec

• Lyft, San Francisco, CA

  • [2021/05 - 2023/04] Senior Software Engineer, Data Privacy team

• Amazon, Sunnyvale, CA

  • [2020/04 - 2021/04] Software Development Engineer, Alexa Lab 126 

• Oracle, Redwood Shores, CA

  • [2016/01 - 2020/04] Senior Member of Technical Staff, Database Security team

• Amazon, Seattle, WA

  • [2012/05 - 2012/08] SDE Intern, AWS EC2 security team

  • [2011/05 - 2011/08] SDE Intern, Global Payment System team

Education

• Ph.D. in Computer Science, Virginia Tech, Blacksburg, VA  (Dissertation, Abstract)

• M.S. in Computer Science, Villanova University, Villanova, PA

• B.S. in Software Engineering, Beijing University of Technology, Beijing, China

  • Visiting student in Department of Intelligent Science (1 year), Nagoya University, Japan

Contact: haoz.cs [at] gmail.com

Last update: Jan. 2026