DevOps Engineer

Job Title: DevOps Engineer Location: Sheffield, Birmingham or Edinburgh (Either location - 3 x days per week on site) Salary/Rate: Up to £571 per day Start Date: April 2026 Job Type: 8-month contract (Inside IR35)

Company Introduction Own and evolve our tier 1 banking clients 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.

Job Responsibilities/Objectives

• 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.
• Troubleshoot and prevent pipeline incidents.
• Mentor engineers on secure pipeline development and supply-chain practices.

Required Skills/Experience The ideal candidate will have the following:

• 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.
• Compliance Awareness
• Proven performance tuning (caching, parallelization, dependency pruning).

If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.

Disclaimer Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies. Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.

• 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.
• Compliance Awareness
• Proven performance tuning (caching, parallelization, dependency pruning).

Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.