Senior Product Security Engineer

Chainguard is the trusted source for open source, delivering hardened, secure, and production-ready builds of open source software. The Senior Product Security Engineer will build and harden secure CI/CD pipelines, lead cloud-native product security architecture and threat modeling, and secure Kubernetes workloads, container images, and cloud environments.

Responsibilities:

• 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 Chainguards 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 — minimizing attack surface across our product stack
• Define and drive adoption of baseline security standards: pod security standards, network policies, workload identity, secrets management

Requirements:

• 5+ 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 (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
• 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)