hackajob
Senior Full Stack Engineer
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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.
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Nice To Have
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- 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 work
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