Your new company
A leading consultancy is seeking a Senior MMM/Marketing Effectiveness expert to join their growing London team. Operating across major international markets, the organisation partners with major brands to deliver data-driven marketing effectiveness, customer analytics, and AI-powered decisioning. With strong values, a collaborative culture, and a reputation for innovation, this is an excellent opportunity to step into a high-impact role within a well-established, mission-driven environment.

Your new role
As a Senior Data Scientist specialising in Marketing Mix Modelling and Marketing Effectiveness, you will lead the delivery of end-to-end marketing effectiveness programmes for global clients across various sectors.

Key responsibilities:
*Own full MMM project cycles - from data strategy and modelling to insights, activation, and client recommendations.
*Apply econometrics, regression, Bayesian methods, and machine learning to large, complex datasets.
*Produce dashboards, decisioning tools, and visual analytics using internal frameworks.
*Translate technical outputs into clear, strategic recommendations for senior stakeholders and C-suite decision makers.
*Act as day-to-day contact for clients, supporting workshops, presentations, and commercial conversations.
What you’ll need to succeed
*3+ years’ experience in marketing effectiveness (MMM), advanced analytics, or data science.
*Strong technical capability in Python, R, SQL; experience with cloud platforms (Azure, Databricks) beneficial.
*Solid grounding in econometrics, regression modelling, Bayesian approaches, or advanced statistical techniques.
*Proven experience turning analytical outputs into actionable commercial insights.
*Confident communicator with strong client-facing skills and the ability to lead multiple workstreams simultaneously.
*A collaborative mindset with a passion for coaching and developing junior team members.
What you need to do now
If you’re interested in this role, click ’apply now’ to forward an up-to-date copy of your CV, or call us now.
If this job isn’t quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
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