The Revenue Engine Hackathon: Berlin Edition
27 November • HubSpot Tower Berlin • 15 GTM teams
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.
✓ An application-only cohort
Join 15 high-potential startups selected for their stage, growth ambitions, and go-to-market challenges.
✓ A Revenue Engine built for your business
Work 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 corner
Get hands-on support from GTM and product experts at HubSpot, Clay, Lemlist, and OpenAI throughout the entire build day.
✓ An all-expenses-paid trip to your favorite startup conference in Europe
The winner of the Revenue Engine Hackathon will get 2 tickets + a €2,000 travel stipend to the conference of your choice — VivaTech, Bits & Pretzels, Slush, Web Summit, Tech BBQ, or other.
Codex credits for all startups teams, your AI build partner throughout the day.
1 month free trial of the Agentic Customer Platform + 1 hour of weekly office hours with your hackathon expert.
1 month of the Launch plan free + automatic approval for the Startup GTM Accelerator Wedge.
1 month of full access, including 5,000 credits + a dedicated training session to launch your first campaigns.
8:30 - 9:00
9:00 - 11:00
Your CRM & Revenue Operations Foundation
This is where the engine starts. You'll work with HubSpot solutions engineers to build (or rebuild) the CRM architecture your revenue team will actually run on — not a template, your real pipeline with your real data.
What you'll build: Your team will configure your deal pipeline stages mapped to your actual sales process, set up custom properties for the data points that matter to your ICP, build a live reporting dashboard (pipeline velocity, conversion rates, forecast view), and connect your revenue operations logic so that lead routing, lifecycle stages, and handoff triggers are wired correctly from day one.
With Codex: Generate custom property schemas, workflow logic, and API scripts in minutes instead of days.
What you'll leave with: A fully configured HubSpot Customer Platform with a working pipeline, a dashboard you can open on Monday morning and use to run pipeline review, and the operational scaffolding that every tool in the rest of the day plugs into.
11:00 – 11:15
11:15 - 13:15
ICP Enrichment & Prospecting Engine
Now that your CRM is live, it's time to fill it with the right people. Clay's team will help you build an automated enrichment and prospecting workflow that turns a rough target list into scored, enriched leads ready for outreach.
What you'll build: You'll define and operationalise your ICP using Clay's enrichment waterfall — pulling from multiple data providers to layer firmographic, technographic, and signal data onto your prospect list. You'll build lead scoring models based on your specific criteria, set up automated data hygiene and deduplication, and configure a live sync back into HubSpot so enriched contacts land directly in your CRM with the right properties populated.
With Codex: Write your scoring logic, formulas, and data-cleaning scripts, then iterate live.
What you'll leave with: A working Clay table with your enriched prospect data, a repeatable enrichment workflow you can run on new lists going forward, and a live integration pushing scored leads into HubSpot — so you're not just collecting data, you're activating it.
13:15 – 14:00
14:00 – 16:00
Multichannel Outbound Campaigns
You've got a pipeline structure and enriched prospects. Now you need to reach them. Lemlist's team will work with you to design and launch your first multichannel outbound sequence — email, LinkedIn, and follow-up cadences — using the enriched data from your Clay sprint.
What you'll build: You'll design your outbound sequence architecture (touchpoints, timing, channel mix), write and load personalised email and LinkedIn copy using dynamic variables pulled from your enriched Clay data, set up A/B testing on subject lines and messaging angles, configure sending schedules and deliverability settings, and connect the campaign to your HubSpot CRM so every reply and engagement feeds back into your pipeline automatically.
With Codex: Generate personalised copy variants, dynamic-variable logic, and A/B test angles at scale.
What you'll leave with: A live outbound campaign either already sending or ready to launch that evening — not a plan on a whiteboard, an actual sequence with real copy targeting your real prospects, connected end-to-end from Clay enrichment through lemlist delivery into HubSpot tracking.
16:00 – 16:15
16:15 – 17:00
Every startup presents their live Revenue engine to the full cohort and all four partner teams. This isn't a pitch — it's a walk through of what you actually built. Judges score on build quality, integration depth, and the strategic thinking behind the choices. The winning team takes home 2 tickets and a €2,000 travel stipend to their favorite startup conference in Europe.
