Senior Software Engineer - Infrastructure

Job description

## Who we are Probook is the AI operating system for home services. We started with dispatch, the decision that determines how a $750B industry makes its money, and have since built across the rest of the front office. Our customers do $10M to $100M a year in revenue and run their operations on us. Dispatch was the first step. The harder problems are ahead of us. **Our team:** 2x IMO medalists, 3x ICPC World Finalists and coaches, a Columbia professor, former founders, MIT, Waterloo, GT, and engineers from Citadel Securities, Stripe, Palantir, Two Sigma, and Meta. ## What we want you to 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. ## Who this is for - **3–6 years of engineering experience** with meaningful ownership of infrastructure you built rather than inherited. - **Zero-to-one experience.** You've built infrastructure from scratch at a startup, or stood up new systems on a team inside a larger company. - **Strong infrastructure fundamentals** across distributed systems, cloud infrastructure, networking, CI/CD, and observability. - **Real software engineering.** Infrastructure at Probook means writing code and owning complex systems end to end, from design through production. - **Breadth over depth.** You'd rather build new systems than operate mature ones, and you move up the stack when that's where the problem is. - **Judgment.** You know when a system deserves careful architecture and when it deserves to be finished this week. ## Compensation & Benefits - **Equity:** Meaningful early-stage equity - **Salary:** $200K – $300K - **Health:** Comprehensive medical, dental, and vision - **Perks:** $500 monthly Ramp card for commuting, meals, gym, etc. (plus $25 in nightly meal delivery credit) and really good office snacks - **Access:** Direct access to world-class investors and advisors