Data Analytics Manager in London

Day1Data is a fast-growing data analytics consultancy helping marketing and finance teams measure incrementality and make smarter commercial decisions. From marketing mix modelling and incrementality testing to forecasting, attribution, data infrastructure and AI-enabled analytics, we help companies understand what truly drives growth. We work with leading brands including Healf, PerfectTed, Global Media, Twilio, WorldRemit and Booksy.

We are looking for a Head of Analytics to lead and scale our analytics function. This is a senior leadership role, reporting directly into the Founder, with responsibility for the quality, direction and delivery of analytics work across Day1Data.

You will manage a team of three data scientists initially, with scope to grow the team over time. You will still be hands-on technically, especially across marketing science, MMM, causal inference, incrementality testing, attribution and broader data science work. Own the analytics roadmap across Day1Data, including technical direction, service development, delivery quality and long-term team planning.

Support the overall strategy of the business by identifying new opportunities, improving ways of working and helping shape future service lines.

• Manage a team of three data scientists, supporting their workload, development, technical growth and day-to-day delivery.
• Create structure, processes and standards that help the team work efficiently and consistently.
• Help build a high-performance culture that balances quality, speed, ownership and commercial impact.
• Lead and contribute to technical work across marketing science, MMM, incrementality testing, attribution, forecasting, causal inference and broader data science.
• Work across a range of client challenges, from marketing effectiveness and customer analytics to more bespoke data science and analytics projects.
• Support pitches and proposals by shaping the analytical solution, explaining methodology and building confidence with senior stakeholders.
• Help ensure our work is not just technically strong, but clearly linked to commercial outcomes.

Process, operations & AI adoption:

• Improve the operating model of the analytics team, including delivery processes, QA, documentation, prioritisation and resource planning.
• Explore and implement AI tools that can improve productivity, automation, speed, quality and scalability across the team.

Strong experience in analytics, data science or marketing science, ideally in a senior or leadership role.

• Deep technical understanding of marketing science, including MMM, incrementality testing, causal inference, attribution and experimentation.
• Strong broader data science capability, with the ability to work across varied client problems beyond marketing measurement.
• Hands-on technical skills in Python and SQL.
• Experience managing or mentoring analysts, or data scientists.
• Interest in AI tools and how they can improve analytics delivery, productivity and quality.

Competitive salary (up to £100k). Full ownership of the analytics function, including roadmap, strategy, planning, hiring and delivery quality. The opportunity to manage and grow a high-performing technical team. Hands-on work with leading brands across marketing science, data science and analytics. The chance to help build the future of Day1Data as we scale.