Senior DevOps Engineer

dunnhumby is the global leader in Customer Data Science, partnering with the world’s most ambitious retailers and brands to put the customer at the heart of every decision. We combine deep insight, advanced technology, and close collaboration to help our clients grow, innovate, and deliver measurable value for their customers. dunnhumby employs nearly 2,500 experts in offices throughout Europe, Asia, Africa, and the Americas working for transformative, iconic brands such as Tesco, Coca-Cola, Nestlé, Unilever and Metro. We are looking for a hands-on Lead/ Senior DevOps Engineer to raise the bar for our DevOps practice, mentor the team, and help evolve our DevOps function into a modern, product-minded Platform Engineering capability. You’ll lead day-to-day work, partnering closely with Dunnhumby leadership, and drive high-quality outcomes across infrastructure-as-code, CI/CD, observability, and developer experience. You’ll collaborate directly with software teams and treat platforms as products—anchored by user feedback, clear roadmaps, SLOs, and measurable improvements to delivery speed and reliability. #### What You'll Do

• Lead and mentor a small team of DevOps engineers in IST, providing day-to-day guidance, pairing, and structured growth plans. - Partner with product and engineering teams to help deliver a platform-as-product: contributing to clear roadmaps, customer feedback loops, SLOs, and well-documented golden paths. - Own cloud infrastructure (GCP, some Azure) using infrastructure-as-code (Terraform). - Design, standardize, and continuously improve CI/CD pipelines in GitLab, and facilitate migrations from TeamCity and Octopus Deploy. - Establish and scale GitOps practices with Argo CD; champion progressive delivery and environment promotion strategies. - Strengthen observability with actionable dashboards and alerts in Grafana; drive SLO/error-budget thinking and operational reviews. - Improve security posture across the SDLC (secrets management, image/package governance, artifact hygiene, SAST/DAST reporting via SonarQube). - Facilitate excellent cross-time-zone communication and handovers; set up crisp status updates, docs, and runbooks in Confluence. - Influence architecture and reliability decisions (Kubernetes, networking, IAM, cost management) with a bias for automation and sustainability. - Contribute hands-on: code reviews, IaC modules, pipeline templates, and reference implementations. #### What You'll Bring