Senior Product Security Engineer

United KingdomRemote

Responsibilities

Build & Harden Secure Pipelines
Design, build, and maintain secure CI/CD pipelines with security gates that catch issues before they reach production.
Implement and enforce software supply chain security controls: signed artifacts, SBOMs, provenance attestation (SLSA, Sigstore / Cosign).
Lead security architecture reviews and threat models for Kubernetes-based workloads running on GCP and AWS.
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.

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.
Harden container images, Kubernetes cluster configurations, and cloud IAM postures — minimising attack surface across our product stack.
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 (e.g., GCP Security Command Center, AWS Security Hub).
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.
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Familiarity with Chainguard Images or other minimal/hardened container base image ecosystems. •
Experience with policy-as-code tools (OPA, Kyverno, Conftest).