Senior Performance Analytics Lead, Testing & Media Insights

Momentum Worldwide; City Of London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Momentum Worldwide in London is seeking an Associate Director, Performance Analytics to drive the testing program and lead platform data analysis across multiple brands. You will shape experimentation, uncover patterns, and steer investment and optimisation decisions with insight-led guidance.

You will report into the Data Strategy BD and act as a senior analytics advisor connecting commercial outcomes with media intelligence to inform strategy and spend across channels.

Qualifications

• Experience in media or marketing analytics and measurement in an agency environment.
• Expertise in campaign performance analytics (incrementality testing, attribution, KPI tracking, forecasting).
• Expertise in audience analytics (segmentation, targeting, cross-channel reach).
• Strong statistical knowledge: sampling, hypothesis testing, descriptive statistics, correlation.
• Deep understanding of digital media channels, measurement methodologies and paid/organic social media.

Responsibilities

• Lead the testing program, applying cross-team processes and tools for testing templates and trackers.
• Design and evaluate test-and-learn initiatives (A/B tests, geo experiments, lift studies).
• Produce clear insights from performance data to support targeting, channel selection and planning decisions.
• Develop best-practice analytics and short-term performance forecasts.
• Translate complex analysis into concise recommendations aligned with strategic objectives.
• Partner with Planning, Strategy and Client Service to ensure data informs investment and optimisation.

Skills

Media analytics

Campaign analytics

Audience analytics

Statistics

Digital media knowledge

SQL

Excel

BigQuery

Snowflake

DV360

Google Ads

Facebook Business Manager

Nielsen

Ad Server

AppsFlyer

Google Analytics

Adobe Analytics

Tools

SQL

Excel

BigQuery

Snowflake

Job description

Momentum Worldwide in London is seeking an Associate Director, Performance Analytics to drive the testing program and lead platform data analysis across multiple brands. You will shape experimentation, uncover patterns, and steer investment and optimisation decisions with insight-led guidance.

You will report into the Data Strategy BD and act as a senior analytics advisor connecting commercial outcomes with media intelligence to inform strategy and spend across channels.