Software Engineer - Developer Experience

Doist; San Francisco (CA); On-site; USD 100,000 - 300,000; Full time

Job summary

Cogent is hiring a Developer Experience Engineer on our Core Platform team to own the software delivery lifecycle—the build, CI/CD, and provisioning systems that let both engineers and agents ship securely and fast. This is a hands‑on role for someone who has built developer and delivery infrastructure at an AI startup and wants to define how autonomous agents move code to production.

You will build an agent development experience and a self-hosted software builder, a secure GitHub Actions

Qualifications

• 2-4 years at an AI startup, plus 2-4 years at a high-growth tech company.
• Deep experience with CI/CD and build systems.
• Strong infrastructure-as-code skills with Terraform.
• Comfort working in an agent-forward environment with Claude Code and Codex.

Responsibilities

• Build an agent development experience to streamline idea to production.
• Develop a self-hosted software builder and secure GitHub Actions Runner alternative.
• Adopt and operate a solution to provision infrastructure securely.

Skills

CI/CD

GitHub Actions

Harness

Spacelift

Terraform

Claude Code

Codex

Self-hosting

Tools

Pants

uv

e2b

pico

Artifactory

Job description

About Cogent

Cogent is an Applied AI Lab building the next generation of AI agents for cybersecurity. AI has fundamentally changed how attacks happen, allowing malicious actors to operate at unprecedented speed and scale. Cogent's "AI Taskforce" assesses petabytes of enterprise data to remediate these issues before critical breaches occur. To stay at the cutting edge, we blend frontier research with real-world execution. Alongside our core product work, Cogent Research serves as our applied AI lab, providing the research horsepower needed to make truly agentic security workflows a reality. We partner with Fortune 500 companies to secure some of the most complex production environments in the world. We're backed by Greylock & Bain Capital Ventures, and we've built a team with the best minds in applied AI.

Our team is comprised of people from:

• Top universities like Stanford, Berkeley, Penn, Duke, Carnegie Mellon, WaterlooUnicorn, high-growth companies like Scale AI, Databricks, Stripe, Tesla, CoinbaseWorld class cybersecurity experts from Wiz, Abnormal AI, ZscalerPreeminent research labs like Deepmind and SAIL

About the Role

We're hiring a Developer Experience Engineer on our Core Platform team to own the software delivery lifecycle - the build, CI/CD, and provisioning systems that let both engineers and agents ship securely and fast. You'll build the systems that take code from idea to production, including the infrastructure that lets agents build, deploy, test, and verify autonomously.

This is a hands-on role for someone who has built developer and delivery infrastructure at an AI or high-growth startup and wants to define how autonomous agents move code to production.

What You'll Do

• Build an agent development experience that streamlines idea to production, letting agents build, deploy, test, and verify code autonomously
• Build a self-hosted software builder, a secure GitHub Actions Runner alternative that meets our compliance requirements
• Adopt and operate a solution to provision infrastructure securely

We’re Looking For

• Deep experience with CI/CD and build systems: GitHub Actions, Harness, SpaceliftStrong infrastructure-as-code skills with TerraformComfort working in an agent-forward environment with Claude Code and Codex2-4 years at an AI startup, plus 2-4 years at a successful high-growth tech company

Bonus Points

• Self-hosting experience across GitHub and ECRBuild tooling experience: Pants, uv, e2b, picoArtifactoryPrior startup founder experienceA secondary spike in Application Security

For California Based Applicants

The standard base salary range for this position is $100,000 - $300,000 annually. Compensation offered will be determined by factors such as location, job level, job-related knowledge, skills, and experience. Certain roles may be eligible for variable compensation, equity, and benefits.

We are committed to building an inclusive and diverse company. We do not discriminate based on gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.