Cash Access UK
Senior Power BI Developer
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About the Role
You’ll work alongside colleagues in the Insights team and partner closely with the Data & Technology function, while acting as the team’s primary Power BI specialist.
We are building a new data platform on Microsoft Fabric and, alongside it, the reporting that Cash Access UK will run on. Your job is to manage that reporting layer end to end: the certified semantic models that sit over the warehouse, the reports built on them, and the standards that determine how Power BI content is developed here.
You will support the design and delivery of the reporting stack from an early stage of BI maturity. This is not a role where requirements arrive fully formed and you build to spec. You will help shape what good looks like here, agree definitions with the people who own the business areas, and help shape how reporting develops as the organisation grows.
Key Responsibilities
- Substantial Power BI development experience, with meaningful ownership of a body of reporting rather than building to someone else’s specification.
- Advanced DAX, including performance tuning, with strong Power Query skills.
- Strong dimensional modelling for analytics, with practical experience of tabular model design.
- Experience implementing row level security and governed sharing across multiple business areas.
- Strong SQL skills, with experience querying analytical data warehouses.
- Experience working to defined workspace, deployment and lifecycle standards, and improving them where they fall short.
- Experience working with source control, deployment pipelines and controlled release processes for Power BI assets.
- A track record of turning vague requirements from non-technical stakeholders into reporting that gets used.
- Comfortable working where process is not yet established, able to set direction and deliver with limited supervision.
- Credible with senior stakeholders, and willing to challenge a request when the underlying question is the wrong one.
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Semantic Modelling
- Design, build and maintain the certified semantic models that sit over our Fabric warehouse, covering star schema design, relationships, row level security and DAX measure logic.
- Establish agreed metric definitions within the semantic layer so that reporting and future AI-assisted querying return consistent answers.
- Optimise models for performance, including refresh strategy and query efficiency.
- Monitor the health and performance of production semantic models, investigating refresh failures and performance issues.
- Work closely with the Data & Technology team to influence warehouse design, ensuring data structures support effective semantic modelling and reporting.
Reporting and Data Products
- Build certified reports and dashboards for executive, operational and departmental audiences, from first conversation through to adoption.
- Migrate and consolidate existing Power BI content onto certified models, retiring duplicated and unmanaged reporting.
- Apply consistent design and usability standards across everything published centrally.
- Make sure reporting answers the question being asked rather than simply presenting the data that exists.
- Identify, investigate and help prioritise resolution of data quality issues that impact reporting, working with business stakeholders and the Data & Technology team.
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Standards and Best Practice
- Maintain and improve the standards that govern how Power BI content is developed, tested, published and retired, working to the direction set by the Head of Analysis & Insight.
- Maintain documentation and lineage so that models and reports are understandable and supportable by others.
- Act as a subject matter expert for Power BI, promoting best practice in report development and semantic modelling across the organisation.
Partnering and Delivery
- Work directly with department leads to understand what they need, challenge where appropriate, and agree priorities.
- Translate requirements from non-technical colleagues into reporting that people use and trust.
What We Offer
- A permanent, remote-first role with travel to London currently around one day per week, paid for.
- Salary up to £75,000 depending on experience, plus a discretionary company bonus of up to 20%.
- The chance to build a reporting capability from the ground up, in an organisation small enough that your work is visible at board level.
- Work with a clear social purpose, keeping cash and face-to-face banking available to the communities that still depend on them.
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