Data Scientist
Data Scientist
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Job Description
Media help partners understand the changing advertising landscape. Specialising in audience measurement consumer targeting and in-depth intelligence into paid owned and earned media their global coverage and local expertise enable better understanding of media audiences and their relationships with brands.
Kantar Media is a wholly owned but operationally independent part of the Kantar Group.
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Job Details
As people increasingly move across channels and platforms Kantar Medias data and audience measurement targeting analytics and advertising intelligence services unlock insights to inform powerful decision-making.
Working with panel and first-party data in over 80 countries we have the worlds fastest growing cross-media measurement footprint underpinned by versatility scale technology and expertise to drive long-term business growth for our clients and partners.
Job Title: Data Scientist
Location: London
Work pattern: Full time/Permanent/Hybrid working
This is a full-time permanent position based in our London office. We operate in a hybrid capacity and require 2 days in the office. All applicants must have the legal right to live and work in the UK.
Role Description:
Were looking for a data scientist who thrives on solving complex real-world problems using dataand wants to have a meaningful impact on the future of media.
This role sits at the heart of cutting-edge audience measurement research where youll help shape how the worlds leading broadcasters advertisers and platforms understand and connect with audiences. Youll work on high-
impact initiatives that drive innovation across the media ecosystem including:
- Integrating large and diverse datasets from panels census-level sources digital platforms and global partners.
- Developing GPU-powered algorithms for high-performance modelling at scale.
- Exploring applications of Large Language Models (LLMs) in media and measurement contexts.
- Designing and implementing machine learning solutions that enhance our product capabilities and operational intelligence.
As part of a collaborative and technically strong team youll work closely with engineers product managers and fellow scientists. We value initiative curiosity and real-world impactthis is a great fit for someone who wants to build experiment and push boundaries in applied data science.
Key Responsibilities
- Design prototype and optimise statistical and ML models for integration into production workflows.
- Explore and apply LLMs and emerging AI techniques to enhance media and audience measurement use cases.
- Collaborate with cross-functional teams to ensure model deployment is robust scalable and aligned with product goals.
- Investigate large datasets to discover trends resolve inconsistencies and support high-quality insights.
- Contribute to code reviews design sessions and documentation to maintain best practices in model development.
- Take ownership of project areas while working in a collaborative face-to-face and iterative development environment.
Skills & Experience
- Strong foundation in applied mathematics statistics or machine learning.
- Experience building and deploying models in Python (pandas NumPy scikit-learn etc.).
- Comfort working with large and complex datasets including data wrangling and exploratory analysis.
- Experience (or strong interest) in GPU-powered model development (e.g. using PyTorch TensorFlow JAX or similar).
- Demonstrated ability to work independently on real-world projects.
- Strong communicator with the ability to share ideas take feedback and collaborate effectively.
- A masters or PhD in a quantitative field (or equivalent real-world experience in data science or analytics).
- Bonus: experience in at least one of the following areas:
- Working with Marketing Mix Models (MMMs)
- Practical applications of Large Language Models (LLMs) or NLP
- Understanding of web technologies and identifiers (e.g. cookies device IDs MAIDs etc.)
Our offer
At Kantar we have an integrated way of rewarding our people based around a simple clear and consistent set of principles. Our approach helps to ensure we are market competitive and to support a pay for performance culture where your reward and career progression opportunities are linked to what you deliver.
We go beyond the obvious using intelligence passion and creativity to inspire new thinking and shape the world we live in. Apply for a career thats out of the ordinary and join us.
We want to create an equality of opportunity in a fair and supportive working environment where people feel included accepted and are allowed to flourish in a space where their mental health and wellbeing is taken into consideration. We want to create a more diverse community to expand our talent pool be locally representative drive diversity of thinking and better commercial outcomes.
At Kantar the diversity of our employees provides a richer environment for our employees and broader depth and breadth of thinking for our clients. Kantar is committed to inclusion and diversity; therefore we welcome applications from all sections of society and do not discriminate because of age race religion gender pregnancy sexual orientation gender identity disability marital status or any other legally protected characteristics.
Privacy and Legal Statement
PRIVACY DISCLOSURE: Please note that by applying to this opportunity you consent to the personal data you provide to us to be processed and retained by The Kantar Group Limited (Kantar). Your details will be kept on our Internal ATS (Applicant Tracking System) for as long as is necessary for the purposes of recruitment which may include your details being shared with the hiring manager(s) and for consideration for potential future opportunities by Kantar and its affiliate Kantar group companies. For full details of our privacy policy please visit
Country
United KingdomWhy join Kantar
We pride ourselves on understanding people and what makes us think and act the way we do.
And because we know people we like to make sure our own people are being looked after as well. Equality of opportunity for everyone is our highest priority and we support our colleagues to work in a way that supports their health and wellbeing. While we encourage teams to spend part of their working week in the office we understand no one size fits all; our approach is flexible to ensure everybody feels included accepted and that we can win together. Were dedicated to creating an inclusive culture and value the diversity of our people clients suppliers and communities and we encourage applications from all backgrounds and sections of society. Even if you feel like youre not an exact match wed love to receive your application and talk to you about this job or others at Kantar.
Employment Type
Full-Time
