Justin Lee

I'm Justin, cofounder of Den, a YC X25 company with ambitions to be the first two-person unicorn. Before Den, I built software at Atlassian, shipping fixes for Apple and SpaceX, and got early access to realtime GPT while engineering at Lyrebird Health. I studied CS at the University of Melbourne on a full ride, graduated cum laude, and won 1st place at Jane Street Mystery Planet. Valedictorian and school captain back in Australia, which I mention mostly because I was also touch rugby captain. Ask me about building Den, early-stage startup life at YC, and working with AI APIs before they were mainstream.