Gennie is the Managing Director of Technology at the Electronic Frontier Foundation, where she oversees the organization's Engineering & Design, Public Interest Technology, and Technical Operations teams. Her research and writing primarily focuses on consumer privacy and security, with an emphasis on third-party tracking, platform policy, and secure messaging, as well as content moderation and open access.

Gennie is also an Affiliate Associate Professor at the University of Washington Allen School of Computer Science & Engineering and serves on the program committees of several computer security research venues. Prior to joining EFF, she was a Henry Luce Scholar in Laos and Thailand, and earned a Master of Library and Information Science from the University of Washington Information School.