Senior Full Stack 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'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.

• Senior-level experience building and running production services in C# / ASP.NET Core, or Type Script / 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, Network Policies, 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 Postgre
  
  SQL, Key Vault), and willing to learn the other.
• Clear written communication — RFCs, ADRs, runbooks, PR descriptions other engineers can act on.

• Crossplane experience — authoring Compositions, Composite Resource Definitions , or custom providers.
• Git Ops fluency with ArgoCD and Helm, and CI/CD authorship in Git Lab.
• 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.

• Shape clear, testable acceptance criteria with Product and Design.
• Build and own end‑to‑end products across .NET services, Type Script frontend, Postgre
  
  SQL, and Git Ops 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.

You’ll enjoy the comprehensive rewards package you’d expect from a leading technology company, plus a degree of personal flexibility you might not expect, and thoughtful perks such as flexible working hours and your birthday off.

We’ll invest in cutting‑edge technology that reflects our global ambition while maintaining a nimble, small‑business feel that gives you the freedom to play, experiment and learn.

We live diversity and inclusion every day with thriving networks including dh Gender Equality Network, dh Proud, dh Family, dh One, dh Enabled and dh Thrive, ensuring everyone has the opportunity to shine and perform at their best throughout our recruitment process. We will make this process work best for you.

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