Lead Engineer(.Net)- Backend

About dunnhumby 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. Headquartered in London and wholly owned by Tesco, 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. 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’s 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 helps retailers and brands deliver better experiences through Customer First strategies. About Tesco Media Retail Media is transforming how advertisers connect with consumers through personalized and targeted campaigns across retailers' digital and physical touchpoints. Retail Media Measurement plays a pivotal role in ensuring the effectiveness of these campaigns, driving value for advertisers, retailers, and consumers alike. Tesco Media is building a world-class, self-serve B2B advertising platform that enables retailers and brands to plan, activate, and measure omnichannel retail media campaigns. The role We are seeking a talented Lead Engineer with .NET expertise to lead development of a product that helps retailers transform their Retail Media business in a way that helps them achieve maximum ad revenue and enable massive scale. As a Lead Engineer, you will play a pivotal role in designing and delivering high-quality software solutions. You will be responsible for contributing to system architecture and ensuring adherence to engineering best practices. Your technical expertise, leadership skills, and ability to drive results will be key to the success of our products. What will you be doing? • Design and deliver .NET Core solutions within a microservices architecture, ensuring adherence to compliance, security, and quality standards. • Implement best practices in coding, CI/CD, and DevOps while balancing delivery timelines with technical excellence. • Conduct regular performance reviews, provide actionable feedback, and drive innovation through continuous improvement and process enhancements. • Focus on improving developer productivity and coach junior team members to achieve their full potential. • Collaborate with product managers and architects to define technical roadmaps. What would you need to be successful in the role ? • Proven experience leading technical teams and delivering complex projects. • Strong understanding of object-oriented programming, data structures, and algorithms. • Strong technical expertise in C# and .NET Core, with experience building RESTful APIs and a deep understanding of design patterns, SOLID principles, system design, and engineering best practices. • Strong experience designing distributed systems using microservices and event-driven architecture. • Familiarity with microservices and event-driven architecture using tools like RabbitMQ, Google Pub/Sub and Kafka, as well as containerization technologies such as Docker and Kubernetes. • Hands-on experience with Docker and Kubernetes (K8s); cloud platforms (GCP / Azure / AWS); relational databases (Postgres preferred) and analytical databases ( BigQuery preferred); and testing frameworks ( xUnit / NUnit / Cypress). • Experience using DevOps tools like GitLab CI/CD and leveraging cloud platforms, particularly GCP or Azure, for scalable solutions. • A deep understanding of distributed systems, cloud-native applications, and Un