Senior Power BI Developer

Senior Power BI Developer

Location:

London / Hybrid (1 day/week onsite)

Contract Duration: 3 Months

IR35 Status:
Outside IR35

A high-profile organisation is seeking a Senior Power BI Developer to deliver robust reporting and analytics solutions across their core operations. Focusing primarily on Finance and Retail data streams, you will own the end-to-end Power BI lifecycle, from refining data models using Star Schema principles to deploying performant, production-ready dashboards.

• End-to-End Analytics:
  Design, build, and maintain scalable Power BI dashboards and semantic models that translate business needs into intuitive reporting.
• Architecture & Optimization:
  Collaborate with Data Engineering teams to evaluate performance bottlenecks and determine whether metrics should be calculated in Power BI or upstream in the ETL platform.
• Data Integration:
  Query and integrate data across diverse environments, including Databricks, SQL Server, Azure, REST APIs, and SharePoint.
• Advanced Modelling:
  Build complex DAX measures, KPIs, and Power Query (M) transformations to support robust decision-making.
• Governance & Security:
  Manage datasets, refresh schedules, and Row-Level Security (RLS) within Power BI Service to maintain data accuracy and integrity.

• Proven track record as a Senior Power BI Contractor delivering enterprise-level solutions.
• Commercial experience building reporting solutions focused on Finance and Retail data.
• Advanced hands-on expertise in DAX, Power Query (M), and SQL (T-SQL).
• Strong data modelling expertise using Star Schema principles.
• Experience querying Databricks structures and integrating modern cloud data architectures.
• Excellent stakeholder management skills with the ability to bridge the gap between technical teams and business units.

• Familiarity with the wider Azure data ecosystem (Azure Data Factory, Synapse, Azure SQL) or Microsoft Fabric.
• Exposure to Dev Ops workflows (Git, CI/CD for BI deployments).
• Microsoft Certified:
  Power BI Data Analyst Associate (PL-300).
• Power Platform integration experience (Power Apps / Power Automate).
• Experience working within Agile or iterative delivery environments.