Note: The job is a remote job and is open to candidates in USA. Cityblock Health is building an AI and agent platform to expand what its engineering and care teams can accomplish safely under human oversight. The Platform Engineer will build and mature the agent platform, including its harness, sandboxing, permissions, observability, and audit capabilities, while maintaining reliable, secure, and compliant GCP and Terraform infrastructure.
Responsibilities
- Build and maintain the agent harness other teams use: sandboxing, RBAC, audit trails, and the runtime agents act through
- Make internal systems API-ready for agents, and design the MCP servers, context systems, and agent registry that expose them safely
- Define autonomy tiers: what an agent can do unsupervised, what requires human review, and how an action gets rolled back when it shouldn't have happened
- Shape and hold the bar for the reliability, security, and compliance posture of the platform your work runs on, partnering with the rest of the platform team on day-to-day operations and shaping the GCP and Terraform infrastructure where the agent platform requires it
- Automate operational toil so the platform stays fast to build on as it scales
- Work as a peer to the platform team and a partner to every engineering team that builds on your foundation
- Partner with security to make agent autonomy and audit defensible in a regulated environment
- Work with the data platform so agents act on trustworthy, well-governed data
Skills
- 8+ years of experience as an engineer
- You are a hands-on builder of agent systems, with the infrastructure depth to run them well
- Hands-on experience building agent orchestration or tooling including MCP, agent runtimes, harness design, or comparable systems
- Deep working knowledge of cloud infrastructure and infrastructure-as-code (GCP and Terraform or equivalents)
- You have designed for safety and governance: RBAC, sandboxing, audit trails, autonomy boundaries, and rollback
- You've built in a regulated or high-availability environment where safety and uptime are non-negotiable. HIPAA specifically is a plus, not a requirement
- Security or infosec depth beyond standard platform hygiene
- Senior Staff-level judgment: you set the architecture others depend on and own a platform end to end
- Rock-solid engineering fundamentals and architectural instinct that stand on their own, independent of AI: you reason about distributed systems, failure modes, data flow, and design tradeoffs from first principles
- Fluent daily use of AI assistants for engineering, with a clear sense of when to trust them and when not to
- Comfortable with ambiguity and defining your own scope. Part of the job is deciding what the platform should become
- A CS degree or equivalent
- Direct HIPAA or SOC 2 experience
Benefits
- Health insurance
- Life insurance
- Retirement benefits
- Participation in the company’s equity program
- Paid time off, including vacation and sick leave
Company Overview
Company H1B Sponsorship