Senior business data analyst

Salary: £? - ? per year Requirements: Proven experience as a BA within data-focused environments Strong understanding of data architecture, data lineage and reporting ecosystems Experience documenting complex data flows and business processes Ability to work with technical teams to understand data pipelines and transformation logic Strong stakeholder management and requirements gathering experience Experience working with cloud-based data platforms Excellent documentation and communication skills Experience with Tableau and Power BI environments Knowledge of Google Cloud Platform (GCP) Familiarity with PostgreSQL, Python and Apache Airflow Experience within digital media, publishing, advertising technology or affiliate commerce environments Understanding of programmatic advertising and revenue reporting models Previous experience supporting data migration or modernisation programmes Responsibilities: Map and document our current data architecture and reporting ecosystem Analyse existing Python and Apache Airflow data pipelines Trace data flows from multiple partner data sources through Google Cloud environments into reporting platforms Review and document transformation logic within PostgreSQL Work closely with commercial stakeholders to gather and define business requirements Assess and rationalise complex taxonomy and mapping structures across multiple reporting domains Conduct audits of existing reporting logic and identify gaps, risks and dependencies Produce clear technical and business documentation to support future migration and delivery activity Help define our target-state architecture and delivery roadmap Technologies: Airflow Cloud GCP Support PostgreSQL Power BI Python Tableau More: We are a data-driven team working on a critical discovery phase project for an initial 3-month contract. This is a senior, high-impact opportunity based in London with hybrid working, requiring one day per week in the office. You will join us to help untangle a complex reporting and data infrastructure environment, bridging commercial and technical teams to support a future-state architecture and transformation roadmap. The role offers a competitive day rate, significant stakeholder exposure, and the chance to work across business and technical teams in a complex cloud-based data environment. last updated 24 week of 2026