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. **dunnhumby** is the global leader in Customer Data Science, empowering businesses everywhere to compete and thrive in the modern data-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 worlds most 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 & Gamble and Metro. **Dunnhumby** helps retailers and brands deliver better experiences through Customer First strategies. We are seeking a **Software Engineer** in backend with expertise in .NET/JAVA technologies, cloud platforms (AWS, Azure, GCP), and microservices architecture. We are hiring for Tesco Retail Media team this is a Retail Media Network is an advertising platform owned by a retail company that allows brands to advertise to the retailers customers on the retailer’s own properties and sometimes beyond. In practice, this means retailers like Amazon, Walmart, Target, etc., offer ad placements on their websites, apps, in-store displays, or other channels, leveraging their first-party shopper data. The engineers would be involved in developing a product that helps Retailers transform their Retail Media business in a way that helps them achieve maximum ad revenue and enable massive scale. You will be responsible for designing, developing, and maintaining scalable and efficient backend systems. You will collaborate with cross-functional teams to deliver high-quality solutions that meet business needs, ensuring optimal performance, reliability, and scalability. **Key Responsibilities:** 3 years experience from Product company Design and implement robust backend systems and services using .NET/ JAVA technologies . Build, deploy, and maintain microservices in a cloud-based environment, ensuring scalability, fault tolerance, and performance. Leverage cloud technologies (AWS, Azure, GCP) to deploy and manage backend services in a cloud-native environment. Write clean, maintainable, and efficient code while adhering to coding standards and best practices. Optimize backend services for performance, security, and reliability. Collaborate with front-end developers, DevOps engineers, product managers, and other stakeholders to deliver integrated solutions. Provide mentorship to junior developers as needed. Implement automation frameworks, integrate CI/CD pipelines, and drive continuous improvement to streamline deployment and testing processes. Write unit, integration, and performance tests. Troubleshoot and resolve issues in production and development environments. Create and maintain detailed documentation for backend services, architecture, and workflows. **Key Skills and Qualifications:** 3 to 5 years of hands on expertise in C#, ASP.NET, .NET Core, Java and related frameworks. Strong experience designing, developing, and deploying microservices-based applications. Hands-on experience with at least one cloud platform (AWS, Azure, GCP), including cloud-native services like containers (Docker), serverless, and Kubernetes. Solid understanding of relational and NoSQL databases (SQL Server, PostgreSQL, MongoDB, etc.) and experience with cloud database services. Proficiency in designing and developing RESTful APIs, GraphQL, and working with third-party integrations. Experience with continuous integration, deployment, and version control systems (e.g., Git, Jenkins, Azure DevOps, GitLab). Knowledge of event-driven architecture, messaging queues (e.g., Kafka, RabbitMQ), and service discovery mechanisms. Understanding of security principles, including authentication, authorization, encryption, and secure coding practices. Experience with performance optimization, load balancing, and monitoring tools (e.g., Prometheus, Grafana). Strong analytical and problem-solving skills, with a keen attention to detail and ability to debug complex systems **Preferred Skills:** Exp :3+years Experience with containerization tools like Docker and orchestration using Kubernetes. Familiarity with Agile methodologies and Scrum practices. Knowledge of monitoring and logging tools (e.g., ELK stack, Datadog, New Relic). Familiarity with serverless architectures. - Strong experience in Java, C#, .net, Java and Javascript - Strong experience in using a SQL based database - Development and design of software solutions working closely with product managers - Knowledge of working in an agile fashion, such as Scrum or Kanban - Using techniques such as writing unit tests, refactoring, CI/CD - Fixing and improving live issues when they occur **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 expect. Plus, thoughtful perks, like flexible working hours and your birthday off. You’ll also benefit from an investment in cutting-edge 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 Gender Equality Network, dh Proud, dh Family, dh One, dh Enabled and dh Thrive as the living proof. We want everyone to have the opportunity to shine and perform at your best throughout our recruitment process. Please let us know how we can make this process work best for you. **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 outside of work. We believe that 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. For further information about how we collect and use your personal information please see our Privacy Notice which can be found **[(here)](https://www.dunnhumby.com/recruitment-privacy-notice/)**