Senior Business Data Analyst

Senior Business Data Analyst

Contract: £450-£550 per day

Location: London, 1 day per week

We are currently looking for a Senior Business Data Analyst (Data Architecture & Discovery) to join a, data-driven team on an initial 3-month contract focused on a critical discovery phase project.

Reporting into senior business stakeholders, this person will play a key role in helping the organisation understand, document and future-proof a complex reporting and data infrastructure environment. The successful candidate will act as the bridge between commercial teams and technical data specialists, helping to untangle legacy data processes and define the roadmap for a future-state architecture.

This is an ideal opportunity for a lead who enjoys working at the intersection of business, data and technology, combining stakeholder engagement with hands-on analysis of data pipelines, reporting systems and transformation logic.

The Opportunity

This assignment focuses on documenting the current data landscape, understanding business requirements and producing a clear blueprint for future delivery.

Key responsibilities include:

* Mapping and documenting the current data architecture and reporting ecosystem

* Analysing existing Python and Apache Airflow data pipelines

* Tracing data flows from multiple partner data sources through Google Cloud environments into reporting platforms

* Reviewing and documenting transformation logic within PostgreSQL

* Working closely with commercial stakeholders to gather and define business requirements

* Assessing and rationalising complex taxonomy and mapping structures across multiple reporting domains

* Conducting audits of existing reporting logic and identifying gaps, risks and dependencies

* Producing clear technical and business documentation to support future migration and delivery activity

* Helping define the target-state architecture and delivery roadmap

This role offers the opportunity to make a significant impact on a high-profile data transformation programme, providing clarity and direction for future implementation phases.

What's in it for you?

* Competitive day rate

* Hybrid working arrangement

* High-impact discovery and transformation project

* Opportunity to work across business and technical teams

* Exposure to complex cloud-based data architecture environments

* Autonomous role with significant stakeholder exposure

Skills & Experience

* 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

If you would like to be considered for the role and feel you would be an ideal fit, please apply with your latest CV