Senior Data Analyst – Marketing Science

Company: Harnham
Apply for the Senior Data Analyst – Marketing Science
Location: London
Job Description:

Overview

In this role, you will lead hands-on, strategic measurement work to optimise marketing impact and subscriber growth. You’ll build and refine marketing mix models and help scale measurement frameworks across a growing analytics function. You’ll translate insights into concrete actions that influence budgets and channel mix, collaborating with marketing, finance and global teams. This is an opportunity to shape best-in-class marketing measurement in a fast‑growing digital media business.

Pay / Benefits

  • Salary up to £65,000 + benefits

Responsibilities

  • Build, maintain, and evolve MMM models to quantify marketing impact on subscriber growth and engagement
  • Support transitions from MMM to geo-testing, incrementality testing, and A/B experimentation
  • Design test-and-learn frameworks to improve measurement accuracy
  • Translate insights into actionable recommendations and ensure implementation
  • Partner with commercial stakeholders to assess forecast accuracy and inform campaign planning
  • Collaborate with performance, brand, and finance teams to communicate findings and influence investment decisions
  • Contribute to developing measurement methodologies across a scaling analytics organisation

Key requirements

  • Proven experience in Marketing Mix Modelling and marketing effectiveness frameworks
  • Strong SQL skills (comfortable scoring 10–11/15 on SQL assessments)
  • Hands-on experience with R or Python for statistical modelling
  • Strong experimentation background (A/B testing, geo-testing, incrementality)
  • Excellent communication skills—able to simplify complex models and influence senior stakeholders
  • Ability to translate insights into actionable recommendations and follow-through
  • communication
  • influence senior stakeholders
  • collaboration
  • Marketing Mix Modelling
  • SQL
  • R or Python

…

Posted: September 14th, 2026