Data & AdTech Manager in London

We are the ROI agency, a position we have proudly held true to since 2005. Our more than 6,000 specialists across 95 markets offer unparalleled capabilities in Media, Data, Technology, Commerce and Content. We put effectiveness at the heart of our work to solve complex challenges, drive successful business outcomes, and grow our clients’ businesses.

Over the years, we have evolved our definition of ROI, as it has changed with the ever-evolving landscape. ROI is about delivering Return on Investment; but it’s also about going beyond to deliver growth for our clients’ businesses, growth for our people, and growth for our culture. Powered by our best-in-class proprietary tools and data, our work spans the full spectrum of media communications, from analytics, data and technology to performance marketing, content and superior trading.

This breadth means we deliver insight that lies at the intersection of consumer, category, and brand, attributing every budget to stronger business outcomes. It means we deliver more creative media solutions that bring together best-in-class strategy, planning and the power of Publicis Groupe to ensure distinct and more personal brand experiences for our clients. It means we adopt new data analytics and value optimisation techniques while building relationships with some of the world’s most exciting start-ups. We leverage over 30 years of media planning expertise to go beyond traditional media solutions and deliver a Return on Investment that is both forward-thinking and accountable to our clients. At Zenith, we ultimately seek out a more meaningful kind of ROI.

We are hiring an Ad Tech & Data Manager to shape how ad technology and data power meaningful growth for some of our most exciting global clients. This role sits at the heart of how strategy becomes scalable, measurable activation bringing clarity, rigour and momentum to complex ad tech ecosystems. You’ll partner closely with client, strategy and activation teams to build strong foundations today, while designing smarter, future-ready ways of working for tomorrow. If you enjoy blending technical depth with collaboration and impact, this is a role where your craft will be seen and valued.

What you’ll be doing:

• Owning and evolving the ad tech roadmap across a portfolio of clients, balancing performance, scalability and governance.
• Turning complex or ambiguous requirements into clear workstreams, priorities and recommendations that teams can act on.
• Building and maintaining robust tagging and asset inventories, with clear documentation and quality assurance standards.
• Leading verification and measurement standards, ensuring consistent setup, benchmarking and ongoing governance.
• Supporting ad tech and DSP consolidation initiatives to simplify ways of working and improve outcomes.
• Partnering with teams to assess, pilot and roll out new vendors or capabilities, supported by clear guidance and enablement.
• Creating playbooks and running training that empower activation teams with repeatable, practical processes.

Skills we’re looking for:

• A strong understanding of the digital advertising ecosystem and how platforms connect across ad serving, buying and measurement.
• Hands-on experience with ad tech or in-platform activation, ideally including tools within Google Marketing Platform.
• Confidence working with tagging, tracking QA and data quality controls, with an eye for consistency and detail.
• Proven ability to manage multiple projects at once, working collaboratively with senior stakeholders and cross-functional teams.
• Clear, structured communication skills—comfortable sharing recommendations, progress and trade-offs.
• Practical experience producing documentation such as runbooks, governance frameworks or stakeholder updates.
• Curiosity about identity, privacy-safe measurement and audience activation, and how these evolve across markets.

Zenith International has fantastic benefits on offer to all of our employees, full details of which are shared when you join. This includes the classics like Pension, Life Assurance, Private Medical, as well as Reflection Days, Shared Parental Leave, and spans other initiatives.

At Zenith International, we are proud to be an equal opportunities employer. We welcome and encourage applications from people of all backgrounds, and do not discriminate on the basis of race, ethnicity, nationality, religion or belief, disability, age, citizenship, relationship status, sexual orientation, gender identity, or any other protected characteristic.

We are committed to providing a fair, accessible, and inclusive recruitment process. If you have any access needs - for example, related to disability, neurodivergence, or a health condition - please let us know. We’ll work with you to ensure the process works for you. Sharing this information will never impact your application.