Endgame compiles every call, email, meeting, and playbook your team produces into one living context graph that people and agents can act on. Backed by Menlo.
About the role
Build and evolve the MCP server and agent tool surfaces that AI clients use to query Endgame's context graph — designing tool schemas, managing context windows, and making sure every tool call returns the right data fast. Ship the frontend features, tRPC routes, and React components that customers interact with daily — from admin dashboards to the core product UI.
What they're looking for
- Deep understanding of the TypeScript and JavaScript ecosystem. You've built and maintained serious systems in it, not just touched it
- Familiarity with Python
- Experience designing and implementing LLM and agent tool surfaces, including the tools themselves and the context management around them
- Experience with frontier AI models in production in cloud environments
- Experience developing APIs with a real focus on observability and authentication
- Strong product instincts. You can take an ambiguous product requirement and translate it into deliverable engineering scope
More about this role
Endgame is the context graph for every GTM agent. We process every call, deal, and playbook into structured knowledge that both humans and AI agents can act on — 140× faster and a fraction of the cost of throwing raw data at an LLM.
Revenue teams at Monte Carlo, BetterUp, Braze, and dozens of other leading companies use Endgame as their source of truth. Instead of context scattered across fifteen disconnected systems, their reps, managers, and CS teams — and the agents working alongside them — all operate from the same structured view of every customer and every deal.
We've raised $47.5M from EQT Ventures, Menlo Ventures, Upfront Ventures, and Unusual Ventures, plus executives from Zoom, Stripe, Notion, and Airtable. We're a team of ~25, mostly engineers, and we build production systems with real architecture — not prototypes.
We're an AI-native engineering team. Agentic coding tools are integral to how we build and ship 15-20 times daily, if not more. We build with Claude Code, Cursor, and Copilot, and we're constantly sharing what works and what doesn't. We move fast, we're not afraid to throw things away, and we keep the bar high because customers depend on us. You'll help push...
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