Power BI Developer

Power BI Developer - £450 - £500 a day - London/ Hybrid - Central Government - 6 month initial contract

We are seeking an experienced Power BI Developer to support the development and enhancement of reporting and analytical capabilities across a range of digital transformation and business improvement initiatives.

The successful candidate will work closely with business stakeholders, subject matter experts, delivery teams and technical colleagues to design and implement high-quality reporting solutions that provide trusted management information and actionable insights.

This is a hands‑on role requiring strong technical expertise in Microsoft Power BI, data modelling and analytics, alongside the ability to engage effectively with both technical and non-technical stakeholders.

The role will contribute to improving how data is used across the organisation, enabling evidence-based decision-making and supporting strategic, operational and regulatory outcomes.

Key Responsibilities

The successful candidate will:

• Design, develop and maintain Power BI reports, dashboards and data visualisations that support organisational decision‑making.
• Work with stakeholders to gather, analyse and document reporting requirements.
• Translate business needs into practical and user‑centred reporting solutions.
• Develop and maintain scalable semantic models and datasets using Power BI best practice.
• Create and optimise DAX measures, calculations and business metrics.
• Use Power Query and data transformation techniques to prepare data from multiple sources.
• Connect and integrate data from a variety of systems, including SQL databases, spreadsheets, APIs and other corporate applications.
• Support the definition and implementation of key performance indicators (KPIs) and management information frameworks.
• Review and improve existing reports to enhance usability, accessibility and performance.
• Implement appropriate security controls, including Row Level Security (RLS), where required.
• Publish and manage reports and datasets within the Power BI Service.
• Support data refresh processes, gateways, workspace administration and deployment activities.
• Investigate and resolve data quality, performance and reporting issues.
• Maintain clear documentation of data models, reporting logic and technical designs.
• Contribute to data governance, reporting standards and development best practice.
• Provide knowledge transfer and guidance to internal teams to support long‑term capability development.

Essential Experience and Skills

Applicants must demonstrate:

• Significant experience designing and developing solutions using Microsoft Power BI.
• Experience working with Dataverse, Dynamics 365 and Power Platform data sources to develop reporting and analytical solutions.
• Strong experience creating data models and semantic layers to support reporting and analytics.
• Advanced knowledge of DAX and experience developing complex calculations and measures.
• Strong experience using Power Query and data transformation techniques.
• Experience working with SQL and relational databases.
• Understanding of data modelling principles, including star schemas, dimensions, fact tables and relationships.
• Experience producing reporting solutions for a range of business audiences.
• Strong understanding of dashboard design and data visualisation best practice.
• Experience administering and supporting solutions within the Power BI Service.
• Strong analytical and problem-solving skills.
• The ability to understand complex business requirements and translate them into effective technical solutions.
• Excellent written and verbal communication skills.
• Experience working collaboratively with technical specialists, business users and senior stakeholders.
• Ability to manage competing priorities and deliver quality outcomes within agreed timescales.

Desirable Experience

The following would be advantageous:

• Experience of Microsoft Fabric.
• Experience of Azure data services and cloud-based analytics platforms.
• Experience working with data warehouses, data lakes or modern data architectures.
• Experience implementing reporting governance and data quality controls.
• Experience developing API-based integrations and working with multiple data sources.
• Experience working in Agile delivery environments.
• Experience supporting digital transformation, data or analytics programmes.
• Relevant Microsoft certifications such as PL-300: Microsoft Power BI Data Analyst Associate.
• Experience working within the UK public sector or a regulated environment.

Key Outcomes

The successful candidate will be expected to deliver:

• High‑quality Power BI dashboards and reports that meet agreed business requirements.
• Improved reporting capabilities that support operational and strategic decision-making.
• Well‑structured and performant semantic data models.
• Trusted and reusable KPI calculations and metrics.
• Reliable automated reporting and refresh processes.
• Appropriate documentation and technical artefacts to support future maintenance.
• Knowledge transfer to internal teams to support sustainable capability and reduce dependency on external resource.