DevOps Engineer

DevOps Engineer

Whitehall Resources are currently looking for a DevOps Engineer based in the UK for an initial 9-month contract.

***INSIDE IR35***

Job Spec:

Own and evolve our Jenkins Shared Library powering multi-language builds (Java/Maven, Node/NPM, Python, Helm, Terraform, containers). Deliver fast, secure, provenance-rich pipelines (SLSA, SBOM, digests) and strengthen supply chain integrity across teams

Primary Responsibilities:

• Design and maintain Groovy pipeline steps (build, test, package, scan, deploy).
• Extend Python tooling for SLSA provenance, SBOM generation, hash/digest accuracy, and security scan aggregation (SonarQube, Sonatype IQ, SAST/Container).
• Optimize performance (parallel builds, caching, scope-reduced BOMs, dependency prefetch).
• Ensure artifact integrity (correct SHA1/SHA256 mapping, reproducible inputs, evidence modelling).
• Refactor legacy scripts (remove global state, consolidate hashing, standardize templates).
• Document ci-config.yaml standards and usage patterns.
• Mentor engineers on secure pipeline development and supply-chain practices. Troubleshoot and prevent pipeline incidents

Technical Skills & Competencies:

• 7+ years engineering; 3+ in CI/CD platform or DevSecOps.
• Strong Jenkins + Groovy shared library expertise.
• Advanced Python automation (JSON/YAML processing, tooling scripts).
• Deep Maven/NPM/Python packaging knowledge; exposure to Helm/Terraform and container image metadata.
• Supply-chain security (SLSA, CycloneDX SBOM, digests).
• Experience with SonarQube, Sonatype IQ, container and SAST scanning.
• Proven performance tuning (caching, parallelization, dependency pruning). Compliance Awareness.

Desirable:

• Artifact signing / attestations (cosign, OCI).
• Terraform module and Helm chart publishing patterns.
• GitOps or release automation experience.
• GCP/AWS cloud experience

Soft Skills:

• Precise communicator documentation discipline. -
• Ownership mindset, able to operate with minimal supervision