Revenue Agents for GTM teams. Backed by Y Combinator.
About the role
Our customers are founders and GTM leaders who have handed us their pipeline. When something breaks, or a sequence doesn't behave the way they expected, or they need a field we don't support yet, they say so in a shared Slack channel — and how fast we turn that around is most of what determines whether they stay.
What they're looking for
- Own first response in customer Slack channels — reproduce, diagnose, and give a real answer, fast
- Ship fixes directly: bugs on live campaigns, data and enrichment issues, sequence and sender misconfigurations, backfills, one-off scripts
- Decide what's a same-day fix versus what needs a spec, and write the spec when it's the latter
- Join onboarding and weekly check-in calls, unblock customers live rather than taking notes
- Build the internal tooling that makes the next fix faster — admin views, replay and debugging tools, health checks that catch problems before the customer does
- Turn recurring friction into evidence-backed tickets so the product stops generating the same requests
More about this role
Cardinal ( trycardinal.ai ) is the AI-native outbound sales platform replacing the SDR-and-GTM-engineer stack that companies cobble together today with Apollo, Outreach, Clay, and a few engineers gluing them all together.
We're a YC W26 company. In our first few months we've grown to $80K+ MRR, with 50+ YC companies and a growing roster of post-Series-A startups running their outbound on us. We've raised over $5M from Audacious, Burst Capital, and YC, and we're targeting $10M ARR by mid-2026.
We're a small, dense, design-obsessed team. The bar for engineering taste, product instinct, and aesthetic quality is very high — if you've ever opened Linear or Attio and thought "why doesn't every B2B tool feel like this," that's the bar.
Our customers are founders and GTM leaders who have handed us their pipeline. When something breaks, or a sequence doesn't behave the way they expected, or they need a field we don't support yet, they say so in a shared Slack channel — and how fast we turn that around is most of what determines whether they stay.
As a Customer Engineer, that loop is yours. You're the first responder in every customer channel and the person who actually fixes the thing. Not...
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