Infrastructure Engineer

The Role

Flint runs background agents that make changes to real codebases and serves AI-generated pages at scale. That creates an infra problem most companies don't have: many agents editing code in parallel, and you have to coordinate, merge, and ship their work without it turning into chaos.

You'll own the systems that power all of it: cloud architecture, CI/CD, deployments, observability, and security. It's a 0-to-1 role: you'll inherit a scrappy setup and make it production-grade.

Recent work in this role: synchronizing and merging the git output of parallel background agents, building observability for agentic workloads, and hardening deployment pipelines.

What you'll own

• The concurrency and coordination problems of running many background agents in parallel, the core hard problem of this role.
• Cloud infrastructure end-to-end: architecture, provisioning, CI/CD, deployments.
• Cutting latency and cost as we scale, without trading off reliability.
• Observability and incident response, so we know when things break before users do.
• Security across the stack and deployment pipelines.
• Making it easy for product engineers to deploy confidently and debug fast.

You're a fit if

• You've scaled a product through real user growth and know what breaks, and when.
• You're strong with cloud (AWS or GCP), containers (Docker/Kubernetes), and IaC (Terraform or Pulumi).
• You think in systems, performance, reliability, and cost trade-offs come naturally.
• You can drop into infra you didn't build and make it better without a runbook.

Bonus

• You've been through a startup growth phase.
• Security depth: SOC 2, threat modeling, or pen testing.
• You've built self-service tooling that product engineers actually used.

What we offer

• Historic office in Jackson Square (with 2 rooftops and a shower)
• A crazy upside-down battlestation
• 20 PTO days a year and full health benefits
• Lunch and a fully stocked snack bar at the office, incl. Cometeer coffee pods
• Dog friendly
• Competitive salary + equity [we stand by care for our employees]
• More benefits coming very soon.