Head of Ad Server Migration (12 month fixed term contract)

dunnhumby is the global leader in Customer Data Science partnering with the worlds 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 2500 experts in offices throughout Europe Asia Africa and the Americas working for transformative iconic brands such as Tesco Coca-Cola Nestlé Unileverand Metro.

Tesco Media is the ultimate media partner tobrands. Built on unrivalled customer insightitsamedia 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.

Through Tesco the UKs largest grocery retailer with over 24 million Clubcard households -representingnearly everyhome in the UK - Tesco Media offers brands an unparalleled view into the motivations and behaviours of the nation. It is perfectly positioned to solve businesss greatest marketing challenges unlocking growth by enabling brands to connect with customers in meaningful ways online in-store and via its offsite partners all while enhancing the shopping experience for its customers.

The Role

dunnhumby is seeking an experienced an Head of Ad Server Migration on a 12 month fixed term contract basis to own and deliver a large-scale migration of our ad serving platform.

This role is critical to ensuring continuity of commercial operations data integrity and operational stability during a complex cross-functional transformation.

This is a senior hands-on delivery role accountable for end-to-end orchestration and execution of the migration rather than a purely governance-led PMO position. The successful candidate will lead the programme through planning execution cutover and stabilisation delivering a successful transition with minimal disruption to revenue clients and internal teams.

The role will work closely with stakeholders across Product Engineering Commercial Media Operations Data Legal and external technology vendors.

Key Responsibilities

• Own and lead the end-to-end delivery of the ad server migration programme
• Define and manage programme scope milestones dependencies risks and mitigations
• Ensure commercial continuity safeguarding revenue and client commitments throughout the migration
• Partner with Product and Engineering to align technical architecture integrations and delivery plans
• Work closely with Commercial Media and Operations teams to ensure readiness training and adoption
• Manage external technology partners and vendors holding them accountable for delivery
• Establish appropriate programme governance decision-making forums and executive reporting
• Ensure data integrity security and compliance considerations are addressed in partnership with Legal and Data teams
• Drive issue resolution and decision-making at pace in a complex fast-moving environment

Skills & Experience

• Proven experience leading a large-scale platform or ad server migration ideally within ad tech retail media martech or digital advertising
• Strong understanding of ad serving technologies media operations and advertising workflows
• Demonstrated success delivering complex cross-functional transformation programmes
• Experience working closely with engineering and product teams in technical environments
• A hands-on delivery-focused leader comfortable operating beyond traditional PMO models
• Strong stakeholder management skills including engagement with senior and executive leaders
• Ability to balance pace risk and quality in commercially critical programmes

Why Join dunnhumby

• Lead a business-critical transformation at the heart of dunnhumbys retail media and ad tech strategy
• Work on a high-impact programme with real commercial and technical complexity
• Collaborate with talented cross-functional teams in a data-driven insight-led organisation
• Join a company that encourages ownership curiosity and continuous learning

What you can expect from us

We wont just meet your expectations. Well defy them. So youll enjoy the comprehensive rewards package youd 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.

Youll 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 dont 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.

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