Hackathon In 13 days
November
Wednesday
08:30–17:00 2026 · London time
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Most startups spend months building their GTM setup. You’ll build yours in a single day.
Join our hands-on GTM hackathon for early-stage startups to design, build, and launch a scalable revenue engine from the ground up.
The Revenue Engine Hackathon is where HubSpot for Startups, Clay, OpenAI, and lemlist partner to enable you to launch a working Revenue Engine and be equipped with the tools you need to manage and evolve it for years to come - In one day.
What To Expect
✓ An application-only cohortJoin 18 high-potential startups selected for their stage, growth ambitions, and go-to-market challenges.
✓ A Revenue Engine built for your businessWork on what your team will actually use tomorrow—using your data, your ICP, your team, and your processes. This is not a shared demo.
✓ GTM experts in your cornerGet hands-on support from GTM and product experts at HubSpot, Clay, OpenAI, and Lemlist throughout the entire build day.
✓ The chance to exhibit at Web SummitThe winner of the Revenue Engine Hackathon will get a free startup booth at Web Summit + travel stipend for your team to attend
Approval only. More details here
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Investors in the room
Founders pitch
Investors in the room