hackajob is collaborating with Dunnhumby Ltd to connect them with exceptional professionals for this role. We're looking for a Senior Full Stack Engineer to join our Application Platform team in Manchester, on a hybrid basis. You'll be one of the first product engineers on dunnhumby's new continuous-deployment paved road, building a customer-facing analytics product end-to-end and showing the rest of engineering what "production-ready on the platform" looks like. What we expect from you: Senior-level experience building and running production services in C# / ASP.NET Core and TypeScript / Next.js / React — with working knowledge of the other side and an appetite to grow into both. Comfortable owning a service on Kubernetes — deployments, probes, autoscaling, NetworkPolicies, RBAC — and debugging real failures from kubectl alone. Solid working knowledge of Kubernetes operators and CRDs — you understand reconciliation loops, custom resources, and how operator-driven infrastructure differs from imperative provisioning. Hands-on with at least one of GCP (GKE, Cloud SQL, Pub/Sub, Secret Manager) or Azure (AKS, Azure DB for PostgreSQL, Key Vault), and willing to learn the other. Clear written communication — RFCs, ADRs, runbooks, PR descriptions other engineers can act on. Nice to have: Crossplane experience — authoring Compositions, CompositeResourceDefinitions, or custom providers. GitOps fluency with ArgoCD and Helm, and CI/CD authorship in GitLab. Building custom Kubernetes operators with the Operator SDK or Kubebuilder. Service mesh experience (Istio or Linkerd). Prior experience migrating a product from bundled releases to continuous deployment. Backstage or internal developer portal contributions. Responsibilities: Shape clear, testable acceptance criteria with Product and Design Build and own end‑to‑end products across .NET services, TypeScript frontend, PostgreSQL, and GitOps deployment Design scalable backend systems (APIs, event handling, clean architecture patterns) Deliver high‑quality frontend experiences with accessible components and strong data/state management Work with cloud‑native, declarative infrastructure (Kubernetes, Crossplane, CRDs) Maintain high standards across testing (unit, integration, contract) and code quality Apply strong security practices across backend and frontend systems Build meaningful observability (tracing, logging, SLOs) focused on real user impact Take a cost‑aware approach to scaling and resource usage Participate in an on‑call rotation once ramped up Use AI‑assisted development tools (e.g. Copilot, Claude) effectively in day‑to‑day work41bf1e1f-b16b-4260-a40a-17c77a06fd15
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