Ship AI agents that reason, remember, and act in TypeScript. Mastra provides memory, tools, MCP, and observability to go from prototype to production. Backed by Y Combinator.
About the role
Four months ago Mastra was an incredibly popular open-source agent tool with very little monetization. Then we launched our platform, our head of demand gen joined, and our chief of staff joined. Now we’re closing a couple of deals a week. So now we’re looking for you to join. Yeah, that’s right, you. You’ll be our founding AE. Found on 1752vc Careers, the job board for startup and VC roles.
More about this role
Four months ago Mastra was an incredibly popular open-source agent tool with very little monetization. Then we launched our platform, our head of demand gen joined, and our chief of staff joined. Now we’re closing a couple of deals a week.
So now we’re looking for you to join. Yeah, that’s right, you. You’ll be our founding AE.
This is the second dedicated sales hire at Mastra. Our pipeline is growing faster than one person can work it. The math to our 2026 number says we need you.
You'll start day 1 with a warm pipe. Your job is to run the motion hard, then make it better.
We tilt full-cycle, mid-market. Think: Series A–C companies, usually with regulatory or infra constraints. Hot leads that land as existing users of the open-source framework, and a sales cycle measured in mid-single-digit weeks. You'll talk to eng leaders, earn their trust, and close.
Mastra is the open-source TypeScript-native framework and platform for building AI agents with a serious developer following, and the commercial products that following graduates into:
Platform (Enterprise) — Studio, Server, and the infrastructure teams use to develop, run, debug, observe, and scale agents in production. Hosted by...
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