Marketing Data Analyst - 6‑Month Contract - London
Start Date: 1st September 2025
Location: London (Hybrid)
Rate: Competitive (Inside IR35)
Contract: 6 Months (with possible extension)
Type: Full‑time, 40 hours/week
The Opportunity
We are seeking a Marketing Data Analyst to join a leading global technology organisation on a 6‑month contract. This role sits within a high‑performing marketing analytics team, working across regions to deliver insights that shape marketing strategy, campaign execution, and customer engagement.
Key Responsibilities
Translate business requirements into structured analytical problems and deliver actionable solutions.
Design, write, and optimise SQL queries to extract and transform data from cloud‑based platforms.
Build dashboards, visualisations, and analytical reports using Tableau or Sigma.
Analyse campaign performance and customer segmentation using Salesforce CRM data.
Support and enhance ETL/ELT workflows and data transformation processes.
Conduct rigorous data validation to ensure reporting accuracy.
Contribute to data governance and documentation best practices.
Skills & Experience
3-10 years' experience in Marketing Analytics, Data Analysis, or BI.
Advanced SQL skills; experience with Snowflake highly desirable.
Proven track record with Tableau or Sigma for dashboards and storytelling.
Experience using Salesforce CRM for marketing analytics.
Strong understanding of ETL/ELT pipelines and data governance tools (Atlan or similar).
Excellent communication skills to present complex data clearly to stakeholders.
Why Apply?
Work on a high‑impact project with a global tech leader.
Join a collaborative, data‑driven environment.
Competitive day rate with potential for contract extension.
Opportunity to work on cutting‑edge marketing analytics projects at enterprise scale.
GCS is acting as an Employment Business in relation to this vacancy.

Marketing Data Analyst
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