Marketing Data Analyst

Established in 2004, OLIVER is the world’s first and only specialist in designing, building, and running bespoke in-house agencies and marketing ecosystems for brands. We partner with over 300 clients in 40+ countries and counting. Our unique model drives creativity and efficiency, allowing us to deliver tailored solutions that resonate deeply with audiences.

As a part of The Brandtech Group , we're at the forefront of leveraging cutting-edge AI technology to revolutionise how we create and deliver work. Our AI solutions enhance efficiency, spark creativity, and drive insightful decision-making, empowering our teams to produce innovative and impactful results.

Marketing Data Analyst Location: Weybridge, Surrey, United Kingdom

Established in 2004, Inside Ideas Group is a rapidly growing global agency network that helps clients drive their businesses forward from the inside. We partner with over 300 clients in more than 40 countries, delivering ideas, technology and creativity that make a measurable impact.

As part of The

Brandtech

Group, we are pioneers in using advanced AI technologies to transform the way we create,

optimise

and deliver work. Our AI capabilities enhance efficiency, support smart decision making and unlock new levels of creativity for our teams and clients.

We are now looking for a skilled Data Analyst to join our onsite team supporting in London.

About the Role

As the Data Analyst, you will be responsible for delivering insight that drives improvements across the full commercial ecosystem spanning customer experience on, retailer investment effectiveness, marketing and sales performance, and the broader post-purchase, onboarding and promotional landscape.

A core part of your remit will be the design, build and ongoing management of a marketing and sales performance dashboard, underpinned by Google BigQuery and delivered in Looker Studio. This will serve as a critical decision-making tool for marketing, e-commerce, retail and CX teams surfacing insight such as campaign uplift, halo effects, retailer investment impact and share performance across products and markets.

Alongside this, you will analyse customer journeys, benchmark competitors, oversee content performance and support the planning and execution of onboarding and e-commerce promotions using platforms like GWI to create digital personas and audience profiles.

You will collaborate closely with CX, marketing, product and e-commerce teams as well as HQ and local market stakeholders to ensure insight informs decisions at every stage.

This role requires strong analytical capability,

expertise

in data modelling and SQL, and the ability to translate complex commercial questions into dashboard logic and actionable recommendations.

What You Will Be Doing

Marketing & Sales Performance Analytics

Design, build and

maintain

a marketing and sales performance dashboard in Looker Studio, underpinned by

BigQuery, combining sell-out sales data, market volume and share data, and campaign activity logs.

Define the underlying data model, transform source

files

and design the reporting layer to support consistent, scalable KPI delivery.

Identify

and quantify the impact of retailer investment, including uplift in sales and market share during campaign periods.

Analyse correlations between campaign activity and commercial performance to

determine

which marketing levers are most effective.

Measure and report on halo effects across products and retailers resulting from promotional and campaign activity.

Define and calculate key performance metrics including uplift, baseline, market share, activity

intensity

and halo effects.

Work with GFK

or other syndicated market data sources to enrich performance analysis with market volume and share context.

Customer Experience & Digital Analytics

Conduct analysis of the current customer experience, including user behaviour, content and campaign performance and conversion pathways.

Benchmark key customer journeys against competitor websites to

identify

gaps and opportunities.

Provide

regular insight into paid promotions, post-purchase

experience

and customer satisfaction trends.

Support planning, optimisation and operational management of post-purchase and onboarding experience.

Analyse content utilisation, engagement and drop-off points, and recommend enhancements.

Collaborate with HQ and local teams on onboarding content production and implementation.

Support feature management including evaluation, testing

performance

and monitoring adoption, with ongoing analysis of content effectiveness and customer experience updates.

Reporting, Dashboards & Stakeholder Insight

Build and

maintain

dashboards, reports and ad hoc analyses across customer experience, onboarding, e-commerce, retail

performance

and promotion activity.

Translate data into clear insights that guide decision-making within marketing, CX, digital and commercial teams.

Present findings clearly to stakeholders at all levels, ensuring insight is embedded in planning and operational processes.

Use platforms like GWI to build digital personas and audience profiles that support broader marketing planning.

What You Need to Be Great in This Role

Essential

Proven experience as a data or insight analyst within digital, e-commerce, retail,

marketing

or agency environments.

Strong

proficiency

in Google

BigQuery and advanced SQL, including data modelling and reporting layer design.

Hands-on experience building dashboards in Looker Studio, with a clear understanding of how to structure underlying data models fo