Senior Software Engineer - Infrastructure

Probook is hiring a Senior Software Engineer to own the infrastructure behind both its product and its engineering team. This person builds and runs the systems that power real-time dispatch decisions for customers, the sandboxes and evaluation harnesses engineers use to ship agent workflows, and the developer platform the whole team ships on. The role works directly with the product engineers building on that infrastructure and with the customers it affects. This role is on-site at Probook’s Manhattan office.

What you'll own

• Product infrastructure. Build and operate the infrastructure behind our real-time decision systems — durable execution, workflow orchestration, reliability, and performance for products customers run their business on.
• Agent infrastructure. Build the sandboxes, evaluation infrastructure, and harnesses our engineers use to develop and ship agent workflows, including the compute environments agents execute in.
• The developer platform. CI/CD, deployment, local development, and internal tooling — the abstractions that let the team ship in days rather than quarters.
• Reliability and observability. Instrumentation, monitoring, incident response, and debugging tooling for systems whose failure modes are often probabilistic rather than deterministic.
• Cost and scale. Cloud and inference costs as the product footprint grows, and capacity and architecture decisions made before they become bottlenecks.
• Partner across engineering. Work directly with the product engineers building on your infrastructure, and with the customers affected by it.