Manager, Data science & Marketing Effectiveness

Ready to lead high-impact marketing effectiveness programmes for global brands at one of the most respected consultancies in the space?

This is a Manager-level opportunity within a global data science and AI consultancy, leading MMM programmes for international clients across multiple industries and markets.The Company
This is a globally recognised leader in marketing effectiveness and AI-powered solutions, with over 15 years of experience helping major brands optimise their marketing and commercial operations. With a full in-house team and offices across Europe, North America and Asia Pacific, they deliver tailored data science solutions that turn complex analytics into real business impact.
They hold Great Place to Work certification across multiple regions and recently achieved mission-driven company status, reflecting a genuine commitment to responsible AI and sustainability. The London team sits at the centre of a thriving global practice, working with clients across Auto, Beauty, Retail and Financial Services on some of the most technically ambitious measurement programmes in the market.

The Role
This is a high-visibility Manager role leading end-to-end MMM and marketing effectiveness engagements from scoping through to insight and activation. You'll own multiple client relationships at senior level, manage and develop project teams, and play an active part in growing the practice – all within a collaborative, intellectually rigorous consultancy environment that genuinely values curiosity and craft.
You'll work on complex, multi-market programmes for international clients, translating advanced modelling outputs into strategic investment decisions for C-suite stakeholders. There is real scope to shape methodology, contribute to thought leadership, and develop your career within a firm that takes talent development seriously – with structured progression, international mobility opportunities, and a strong internal learning culture.
This is the right move for someone who combines strong technical MMM expertise with the communication skills and commercial instinct to lead clients and teams with confidence.

Day to Day
- Leading end-to-end MMM and marketing effectiveness programmes across multiple client accounts, from data strategy and scoping through to modelling, insight delivery and activation
- Translating complex analytical outputs into clear, strategic recommendations for senior stakeholders and C-suite clients
- Managing and mentoring project teams, conducting performance reviews, supporting career development and maintaining high standards of delivery
- Acting as the primary strategic and operational contact for key client accounts, building long-term relationships and identifying opportunities to grow them
- Contributing to new business activity – supporting pitches, shaping proposals and helping scope new projects in line with the consultancy's capabilities
- Driving continuous improvement in MMM methodology, tooling and internal assets to scale delivery excellence across the practice
- Contributing to thought leadership, knowledge sharing and innovation initiatives that strengthen the consultancy's position in the market


What We're Looking For
- Solid hands-on experience in econometrics, MMM or marketing effectiveness, ideally within a consultancy or agency environment
- Strong technical skills across Python, R and SQL, with a solid grounding in regression, Bayesian statistics and advanced modelling techniques
- Proven ability to translate complex model outputs into clear, commercially relevant recommendations for non-technical audiences
- Experience leading and developing teams, managing multiple workstreams simultaneously and delivering to high standards under pressure
- Strong client management skills – comfortable influencing senior stakeholders, navigating complex organisations and maintaining trusted relationships
- A collaborative, curious mindset with a genuine interest in innovation and a commitment to quality


What's On Offer
- £75,000 – £90,000 base salary
- Individual and company performance bonus
- Private healthcare, life insurance and wellbeing support
- 25 days annual leave plus bank holidays, with additional days for tenure
- Flexible hybrid working – 2 days per week in a modern central London office, plus 20 remote days per year
- Structured learning and development via an extensive internal training catalogue
- International mobility opportunities across a global network of offices
- A genuinely inclusive, mission-driven culture with Great Place to Work certification