DevOps Engineer

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

*** INSIDE IR35***

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

• 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 (Sonar Qube, Sonatype IQ, SAST/Container).
• Optimize performance (parallel builds, caching, scope-reduced BOMs, dependency prefetch).
• Ensure artifact integrity (correct SHA1/SHA
  256 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.
• 7+ years engineering; 3+ in CI/CD platform or Dev Sec Ops .
• 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.
• Experience with Sonar Qube, Sonatype IQ, container and SAST scanning.
• Proven performance tuning (caching, parallelization, dependency pruning). Compliance Awareness.
• Terraform module and Helm chart publishing patterns.
• Git Ops or release automation experience.

• Ownership mindset, able to operate with minimal supervision