Startups · AI

Staff Software Engineer, Agent Infrastructure and Reliability

CharacterQuilt · New York, NY, US · On-site

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About CharacterQuilt

Computer use agents to deploy enterprise marketing campaigns. Backed by Y Combinator.

About the role

You'll set the architecture and reliability bar for the infrastructure that runs every CharacterQuilt agent. This is not a narrow platform role. You'll own the system from Postgres and the filesystem through workers, sandboxes, authenticated browsers, and the product state customers see.

What they're looking for

  • You've owned production distributed systems, developer infrastructure, or browser automation
  • You can debug across application code, databases, queues, networks, and filesystems
  • You want staff-level scope without staff-level distance from the work
More about this role

Enterprise marketing still runs through agencies because launching one campaign means coordinating specialists across Marketo, HubSpot, Meta, LinkedIn, CMSs, and a dozen other systems. It takes weeks.

CharacterQuilt uses computer-use agents to do that work inside the software companies already use. A campaign that took three months can now ship in two days. We raised $13M and were one of the fastest-growing companies in YC's P26 batch.

You'll set the architecture and reliability bar for the infrastructure that runs every CharacterQuilt agent.

This is not a narrow platform role. You'll own the system from Postgres and the filesystem through workers, sandboxes, authenticated browsers, and the product state customers see.

  • Worker and sandbox orchestration that stays correct through crashes, retries, and timeouts.
  • Durable execution, idempotency, recovery, and observability for consequential agent actions.
  • Browser profiles, credentials, tenant isolation, and authenticated session reliability.
  • The API, CLI, and MCP surfaces around our agent runtime.
  • A simpler system and a higher engineering bar as the team grows.
  • You've owned production distributed systems, developer...

Read the full posting on CharacterQuilt's site ↗

Engineering

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