Senior Performance Analyst

Harnham; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Harnham is seeking a Senior Analyst, Performance Marketing to partner with marketing stakeholders and deliver insights that improve paid media effectiveness and ROI. You will build analytical solutions and use SQL to prepare scalable datasets, while developing dashboards in Power BI, Tableau or Looker to inform marketing decisions.

Experience with MMM inputs and modeling, plus strong stakeholder communication, will help translate complex findings into actionable business recommendations and

Qualifications

• Strong commercial experience using SQL for data extraction, transformation, and analysis.
• Experience in performance marketing, digital analytics, or paid media analytics.
• Understanding of paid media measurement, ROI, attribution, and marketing effectiveness.
• Experience building dashboards with Power BI, Tableau, or Looker.
• Exposure to Marketing Mix Modelling (MMM) and related data inputs.

Responsibilities

• Building and maintaining analytical solutions to measure paid media performance across channels and campaigns.
• Using SQL to create scalable datasets and automate reporting processes.
• Delivering deep-dive analysis into customer acquisition, conversion, retention, and campaign effectiveness.
• Developing dashboards and reporting solutions to support marketing decision-making.
• Collaborating with marketing teams and agency partners to establish robust measurement frameworks.
• Supporting MMM initiatives by preparing data inputs, validating outputs, and helping stakeholders interpret results.
• Assessing attribution models and identifying opportunities to improve marketing measurement.
• Translating complex analytical findings into clear commercial recommendations.
• Collaborating with data engineering and technology teams to ensure data quality and reliable reporting.

Skills

SQL

Performance marketing analytics

Power BI

Tableau

Looker

MMM exposure

Python or R

Stakeholder management

Large datasets

Tools

Power BI

Tableau

Looker

Python

R

Job description

This is an opportunity to join a organisation investing heavily in marketing effectiveness and customer analytics. Sitting within a commercial analytics function, you'll play a role in helping marketing teams understand performance, optimise media investment, and work with MMM models.

The Company

The organisation is undergoing significant transformation across data, analytics, and marketing. Analytics plays a central role in commercial decision-making, with teams working closely with stakeholders to improve customer acquisition, engagement, and long-term value.

The business is continuing to expand its analytical capabilities and is investing in modern data platforms, marketing measurement, and advanced modelling to support smarter marketing decisions.

The Role

As a Senior Analyst, Performance Marketing, you will partner closely with marketing stakeholders to deliver insights that improve paid media effectiveness and maximise return on investment.

Key responsibilities include:

• Building and maintaining analytical solutions to measure paid media performance across channels and campaigns
• Using SQL to create scalable datasets and automate reporting processes
• Delivering deep-dive analysis into customer acquisition, conversion, retention, and campaign effectiveness
• Developing dashboards and reporting solutions to support marketing decision-making
• Working with marketing teams and agency partners to establish robust measurement frameworks
• Supporting Marketing Mix Modelling (MMM) initiatives by preparing data inputs, validating outputs, and helping stakeholders interpret results
• Assessing attribution models and identifying opportunities to improve marketing measurement
• Translating complex analytical findings into clear commercial recommendations
• Collaborating with data engineering and technology teams to ensure data quality and reliable reporting

Your Skills & Experience

• Strong commercial experience using SQL for data extraction, transformation, and analysis
• Experience working within performance marketing, digital marketing analytics, or paid media analytics
• Understanding of paid media measurement, ROI, ROAS, attribution, and marketing effectiveness
• Experience building dashboards and analytical products using tools such as Power BI, Tableau, or Looker
• Exposure to Marketing Mix Modelling (MMM), including supporting model inputs, interpreting outputs, or working alongside modelling teams
• Experience using Python or R for analysis and automation is beneficial
• Stakeholder management skills with the ability to communicate analytical insights to non-technical audiences
• Experience working with large-scale customer, campaign, or marketing datasets