Infrastructure Engineer San Francisco · In office →

Flint; San Francisco (CA); On-site; USD 130,000 - 160,000; Full time

Benefits offered by this job

20 PTO days

Full health benefits

Lunch and snacks provided

Dog friendly environment

Competitive salary + equity

Job summary

Flint is seeking a Cloud Infrastructure Engineer to own and enhance our cloud architecture and CI/CD processes. This is a vital role in managing the complexities of running multiple background agents and ensuring system reliability while reducing costs.

Ideal candidates will have extensive experience with AWS or GCP, containers, and a strong systems-focused mindset. Benefits include 20 PTO days, full health benefits, and a competitive salary with equity.

Qualifications

• Experience scaling products through real user growth.
• Strong knowledge of cloud platforms and container orchestration.
• Ability to improve existing infrastructure without a guide.

Responsibilities

• Own cloud architecture, CI/CD, deployments, and observability.
• Coordinate parallel background agents and manage security.
• Reduce latency and costs while improving reliability.

Skills

Cloud (AWS or GCP)

Containers (Docker/Kubernetes)

Infrastructure as Code (Terraform or Pulumi)

Systems thinking

Job description

Team of ~10, in-person in SF.

TL;DR: Why choose Flint?

We're winning quickly. Backed by Accel, the same partner who led the first round for Scale, Vercel, and Sentry, plus Sheryl Sandberg's fund SBVP and Neo, we launched in February 2026 and are already powering pages that generate hundreds of thousands of dollars in pipeline revenue and have been featured on CNBC.

We've earned the trust of customers like Cognition, Glean, Langchain, Tandem, and 11x, and more we do not publicly reference.

About Flint

Flint is the agentic platform that ships pages from your brand and ad campaigns. AI doesn’t replace marketers; instead it removes the repetitive work of building one-off landing pages for every keyword, campaign tweak, or A/B test. Today we deliver on‑brand pages on your own domain in minutes, with no rebuilds and no engineers. We’re backed by Accel, Sheryl Sandberg’s venture fund SBVP, and Neo.

The vision

Imagine a website that builds new pages, tests creative, and optimizes performance in response to real-world signals: competitive shifts, user behavior, trending search queries, and more. Marketers still own the strategic work—strategy, audience, creative direction, brand judgment—but Flint takes the manual production off their plate so they get those hours back.

The team

Flint is led by co‑founders Michelle Lim, Engineer #1 turned Head of Growth and Product at Warp, and Max Levenson, engineering leader at autonomous vehicle startup Nuro, then Engineer #2 at Vooma. Every single member of the Flint team has been a founding engineer or founder. We’re alums of Netflix, Scale, and Shepherd (YC W21) and work together in‑person out of historic Jackson Square.

The product

• Ranking #1 on AI answer engines like ChatGPT, Perplexity, and Google AI Overview
• Lifting ad conversion rates
• Generating hundreds of thousands of dollars in pipeline revenue

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 turning it 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.
• You have security depth: SOC‑2, threat modeling, or pen testing.
• You’ve built self‑service tooling that product engineers actually use.

What we offer

• Historic office in Jackson Square (with 2 rooftops and a shower).
• 20 PTO days a year and full health benefits.
• Lunch and a fully staffed snack bar at the office, including coffee pods.
• Dog friendly environment.
• Competitive salary + equity.
• More benefits coming soon.