Staff Product Security Engineer New United Kingdom - Remote

Chainguard is the trusted source for open source. By delivering hardened, secure, and production-ready builds of all the open source software engineers and AI agents rely on, Chainguard helps organizations build faster, stay compliant, and eliminate risk. Our customers include Fortune 500 enterprises and global industry leaders.

The role in a nutshell: You are a deeply technical engineer who gets restless when pipelines aren't locked down. You care about shipping secure software! At Chainguard, you won't be a gate at the end of the process; you'll be embedded in it. This is an individual-contributor Staff role. That means technical leadership, cross-team influence, and owning hard problems.

What you’ll do:

• Design, build, and maintain secure CI/CD pipelines with security gates that catch issues before they reach production.
• Systematically, consistently and automatically capture the risk exposure of Chainguard's products.
• Implement and enforce software supply chain security controls: signed artifacts, SBOMs, provenance attestation (SLSA, Sigstore / Cosign).
• Proactively identify emerging customer security needs, and build solutions to meet these.
• Lead security architecture reviews and threat models for Kubernetes-based workloads running on GCP and AWS.
• Harden container images, Kubernetes cluster configurations, and cloud IAM postures — minimising attack surface across our product stack.
• Define and drive adoption of baseline security standards: pod security standards, network policies, workload identity, secrets management.
• Evaluate and operationalise CNAPP / CSPM tooling to maintain continuous visibility into cloud-native risk.

What we’re looking for:

Required:

• 7+ years in software engineering, security engineering, or a combined role with meaningful hands‑on security responsibility throughout.
• Strong proficiency in Go or Python, with the ability to write, review, and debug production-quality code.
• Deep, hands‑on experience with Kubernetes in production (cluster hardening, RBAC, network policies, admission controllers).
• Practical expertise with GCP and/or AWS: IAM, workload identity, secrets management, security services.
• Proven track record designing and securing CI/CD pipelines (GitHub Actions, Cloud Build, Tekton, or similar).
• Fluency with container security: image scanning, distroless/minimal base images, runtime security.
• Experience with software supply chain security tooling and frameworks (Sigstore, SLSA, SBOM generation).
• Solid understanding of OWASP, NIST, and cloud security frameworks and how to apply them pragmatically.

Nice to Have:

• Familiarity with Chainguard Images or other minimal/hardened container base image ecosystems.
• Experience with policy-as-code tools (OPA, Kyverno, Conftest).
• Contributions to open source security projects.
• Background in security research or offensive security (bug bounty, CTF, penetration testing).

Benefits:

• Flexible & Remote-First Culture: Work remotely with team meetup opportunities, bi-annual destination summits, and a monthly stipend for coworking spaces, phone and internet costs.
• Our Approach to Equity: Receive stock options upon hire and promotion. Plus, you can participate in secondary offerings and have 10 years to exercise your options.
• 100% Covered Health Insurance: We cover 100% of your health, vision and dental insurance premiums for you and your dependents.
• Unlimited Flexible Time Off: Take the time you need – to do our best work, we need to recharge and reset.
• 18 Weeks Paid Parental Leave: We offer 18 weeks for birthing parents and 12 weeks for non-birthing parents, with the option to use it all at once or throughout your child’s first year.

About Us:

We live and breathe our company values: We are customer obsessed, we have a bias for intentional action, we don’t take ourselves too seriously (but we do serious work), and we trust each other and assume good intentions.

Equal Opportunity: Chainguard is an equal opportunity employer. We do not discriminate based upon race, religion, colour, national origin, sex, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics.