Senior Software Engineer - Backend

About dunnhumby
dunnhumby is the global leader in Customer Data Science, helping the world's most ambitious retailers and brands put the customer at the heart of every decision. With nearly 3,000 experts across Europe, Asia, Africa and the Americas, we partner with iconic businesses like Tesco, Coca-Cola, Meijer, Procter & Gamble and Metro to turn data into growth, innovation and measurable value for their customers.

Tesco Media

Tesco Media is the ultimate media partner to brands. Built on unrivalled customer insight, it’s a media owner with soul, scale, and storytelling power. Tesco Media helps brands and agencies connect meaningfully with customers, drive creative effectiveness, and grow at the point of purchase.

About the Role

Retail Media is transforming how advertisers connect with consumers through personalised and targeted campaigns across retailers’ digital and physical touchpoints. As a Senior Software Engineer within Tesco Media, you will help build and scale products that enable advertisers and retailers to measure, optimise and improve campaign performance. Working as part of a collaborative engineering team, you will contribute to the design, development and delivery of high-quality software solutions. You'll combine strong technical expertise with a customer-first mindset, helping create innovative products that drive measurable business value.

What You'll Be Doing

You'll play a key role in delivering reliable, scalable and maintainable software solutions.

• Build and enhance customer-facing applications and platform capabilities using modern engineering practices.
• Collaborate with Product Managers, Designers and Engineers to translate business requirements into technical solutions.
• Design and develop scalable services, APIs and integrations that support Retail Media products.
• Champion software quality through testing, code reviews, CI/CD practices and continuous improvement.
• Contribute to technical discussions, knowledge sharing and the adoption of engineering best practices across the team.

What We're Looking For

You'll bring a strong software engineering foundation and a passion for solving complex technical challenges.

• Experience developing and delivering scalable software applications in a modern engineering environment.
• 6+ years of hands-on experience in backend development, focusing on performance, scalability, security, and maintainability.
• Strong proficiency in C# and .NET Core, with expertise in developing RESTful APIs and
• Drive code quality, ensuring adherence to best practices, design patterns, and SOLID
• Experience with cloud platforms (Google Cloud Platform 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
• 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

You'll Thrive If You...

• Enjoy working in Agile development environments.
• Have experience improving platform performance, reliability and scalability.
• Are comfortable mentoring colleagues and sharing knowledge across teams.
• Enjoy working on products that combine technology, data and measurable business outcomes.

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. 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 your recruiter know what adjustments would help.

Benefits in India

The following benefits apply to eligible dunnhumby India employees:

• Healthcare: Medical insurance cover of INR 500,000 for employees and up to five dependants, with dental and vision cover up to INR 5,000 and an optional top-up plan.
• Protection and retirement: Grade-based life and personal accident cover, Provident Fund, gratuity and voluntary National Pension Scheme participation.
• Time off: 25 days’ holiday plus 10 public holidays, paid family leave provisions and a day off for your birthday.
• Wellbeing: Indian Health Organisation membership, confidential employee assistance and access to the dh Wellness Hub.
• Lifestyle and working support: Internet allowance of INR 2,000 per month when working from home under the blended working policy, subsidised office meals, a work-from-home kit for new joiners and an early finish on the last Friday of each month

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)