Senior Software Engineer- Backend

Dunnhumby helps retailers and brands deliver better experiences through Customer First strategies.

dunnhumby is the global leader in Customer Data Science, empowering businesses everywhereto compete and thrive in the moderndata-driven economy. We always put the Customer First.

Our mission: to enable businesses to grow and reimagine themselves by becoming advocates and champions for their Customers. With deep heritage and expertise in retail – one of the world'smost competitive markets,with a deluge of multi-dimensional data – dunnhumby today enables businesses all over the world, across industries, to be Customer First.

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, Meijer, Procter C Gamble and Metro.

We're looking for a Senior backend Engineer (.NET/JAVA) who expects more from their career. This role offers an opportunity to build scalable, high-performance solutions Tesco Retail Media team, enhance code quality and engineering excellence, and contribute to critical architecture decisions within a data-driven environment.

What we expect from you:

• 6+ years of hands-on experience in backend development, focusing on performance, scalability, security, and maintainability.
• Strong proficiency in C#, .NET Core, JAVA with expertise in developing RESTful APIs and microservices.
• Drive code quality, ensuring adherence to best practices, design patterns, and SOLID principles, OOP's
• Strong in data structure, algorithms and experience in developing microservices
• Experience with cloud platforms (Google CloudPlatform C Azure), implementing cloud-native best practices for scalability, security, and resilience.
• Hands-on experience with containerization (Docker)and orchestration (Kubernetes, Helm).
• Strong focus on non-functional requirements (NFRs) such as performance tuning, observability (monitoring/logging/alerting), and security best practices.
• Experience implementing unit testing, integration testing, and automated testing frameworks.
• Proficiency in CI/CD automation, with experience in GitOps workflows and Infrastructure-as-Code (Terraform, Helm, or similar).
• Experience working in Agile methodologies (Scrum, Kanban) and DevOps best practices.

• Identify dependencies, risks, and bottlenecks early, working proactively with engineering leads to resolve them.
• Stay updated with emerging technologies and industry best practices to drive continuous improvement.

Key Technical Skills:

• Strong proficiency in C#, .NET Core, JAVA and RESTful API development.
• Experience with asynchronous programming, concurrency control, and event-driven architecture (Pub/Sub, Kafka, etc.).
• Deep understanding of object-oriented programming, data structures, and algorithms.
• Experience with unit testing frameworks and a TDD approach to development.
• Hands-on experience with Docker and Kubernetes (K8s) for containerized applications.
• Strong knowledge of performance tuning, security best practices, and observability (monitoring/logging/alerting).
• Experience with CI/CD pipelines, GitOps workflows, and infrastructure-as-code (Terraform, Helm, or similar).
• Exposure to multi-tenant architectures and high-scale distributed systems.
• Proficiency in relational databases (PostgreSQL preferred) and exposure to NoSQL solutions.

What you can expect from us:

We won't just meet your expectations. We'll defy them. So, you'll enjoy the

comprehensive rewards package you'd expect from a leading technology company. But also, a degree of personal flexibility you might not. Plus, thoughtful perks, like flexible working hours and your birthday off. You'll also benefit from an investment in

cutting1edge technology that reflects our global ambition. But with a nimble, small- business feel that gives you the freedom to play, experiment and learn. And we don't just talk about diversity and inclusion. We live it every day – with thriving networks

including dh Women's Network, dh Proud, dh Parent's C Carer's, dh One and dh Thrive as the living proof. Everyone's invited.

Our approach to Flexible Working:

At dunnhumby, we value and respect difference and are committed to building an

inclusive culture by creating an environment where you can balance a successful career with your commitments and interests outsideof work. We believethat you will do your

best at work if you have a work / life balance. Some roles lend themselves to flexible options more than others, so if this is important to you please raise this with your recruiter, as we are open to discussing agile working opportunities during the hiring process