Power BI Developer - OUTSIDE IR35

Power BI Developer12 Month Contract | Outside IR35 | £450-£500 per day | Hybrid (London)We're working with a well-established organisation undergoing a major Retail Transformation Programme and are looking to appoint an experienced Power BI Developer on an initial 12+ month Outside IR35 contract.

This opportunity sits across several high-profile transformation initiatives, with a strong focus on Retail, Omnichannel and Finance workstreams, delivering enterprise reporting solutions that will become core to the organisation's BAU reporting capability.

Essential Experience

• To be considered for this role, you must demonstrate:
• Previous experience delivering Power BI solutions within a Retail Transformation programme.
• Experience supporting Retail, Omnichannel and Finance workstreams.
• Proven ability to transition reporting solutions from project delivery into BAU, acting as the conduit between transformation teams and operational business functions.
• Strong stakeholder management skills, working across both business and technology teams.

What you'll be doing

• Design, develop and maintain high-quality Power BI dashboards and reports.
• Translate business requirements into scalable reporting and data modelling solutions.
• Develop robust semantic models using star schema principles.
• Build complex DAX measures, KPIs and Power Query transformations.
• Optimise report performance, datasets and refresh processes.
• Integrate Power BI with SQL Server, Azure, Databricks, APIs, SharePoint and other enterprise data sources.
• Implement Row-Level Security (RLS) and support data governance best practices.
• Work with engineering teams to determine whether business metrics should be calculated within Power BI or upstream within the ETL platform.
• Collaborate with Business Analysts, Data Engineers and senior stakeholders to deliver high-quality reporting solutions.
• Support the transition of transformation deliverables into a sustainable BAU reporting environment.

Essential Skills

• Extensive commercial experience with Microsoft Power BI (Desktop & Service).
• Advanced DAX, Power Query (M) and SQL (T-SQL preferred).
• Strong understanding of dimensional modelling and star schema design.
• Experience developing high-performance enterprise reporting solutions.
• Strong understanding of ETL processes and data warehousing concepts.
• Experience integrating multiple enterprise data sources.
• Excellent communication and stakeholder engagement skills.

Desirable

• Databricks experience.
• Azure Data Factory, Synapse or Azure SQL.
• Microsoft Fabric exposure.
• Power Platform (Power Apps / Power Automate).
• PL-300 certification.
• CI/CD or DevOps experience for BI deployments.

What's on Offer

• £450-£500 per day
• Outside IR35
• 12+ Month Contract
• Hybrid working
• Opportunity to work on a major Retail Transformation Programme
• Strong extension potential

If you're an experienced Power BI Developer with a proven track record of delivering within large-scale retail transformation programmes and embedding reporting solutions into BAU operations, I'd be keen to discuss the opportunity further.