GTM Hackathon Berlin – Halloween Edition

A one-day go-to-market hackathon at Arvana's Berlin office, hosted with GTMengineer.dev. Teams pick one of two tracks: GTM Engineering (outbound systems, data, automation, AI agents) or Performance Marketing (creative and campaign automation, LinkedIn Ads, agent-built ad ops). Hacking starts at 12:00, submissions close at 17:00, jury review and prizes follow, then drinks and a Halloween party from 18:30. Prize pool is 2,000 euros. Free, but registration is approval-based and the working session seats only 40 to 50 people, so a ticket does not guarantee entry once the room is full. Come in costume if you like. Why go: go-to-market gets far less hackathon attention than product, and this one has you shipping real campaigns in an afternoon. Best for technical founders who need their first customers and marketers who want to build with AI coding agents.