Summary
Alex Mackenzie is a London-based investor and partner with nine years of experience backing technical founders building at the intersection of infrastructure, cybersecurity, and AI. Currently at General Catalyst and Ethos, he has a track record of early-stage investments through Tapestry VC and direct bets including Tracebit, Maze, Keycard, Flox, and Oleria Security. He combines a founder-focused investor lens with hands-on product sensibility informed by prior roles at Web Summit and VMware, and publishes thoughts and code via mack.work and github/gitlab. Comfortable operating across Europe, the US and Canada, Alex blends international business training from Northeastern and Dublin City University with a pragmatic, developer-friendly approach to diligence. He often seeks repeat technical founders and infrastructure-first teams, and frames investing as craft—an apprenticeship rather than a destination.
9 years of coding experience
3 years of employment as a software developer
Bachelor of Science - BSc, Science, Bachelor of Science - BSc, Science at University of the Fraser Valley
The Odin Project, The Odin Project at Viking Education