The University of Oxford’s Mathematical Institute (photo by maths.ox.ac.uk)
Oxford Hack 2019 went ahead in November 2019 - 300 members of the hacker community came to the Mathematical Institute to build interesting software and hardware projects during a weekend of hacking, talks, workshops, and other events.
I was technical director of the organising team, so I designed the website (a snapshot of which is available here) and handled the signup process, as well as managing tech on the day itself.
The hackathon inspired 55 amazing projects, which you can check out on the hackathon’s Devpost page.