Senior Business Intelligence Developer

Provallar Executive Search; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Provallar Executive Search is seeking a hands-on Senior BI Developer to own the end-to-end Power BI environment and data infrastructure.

You will work across enterprise datasets, ERP data, SQL Server, ETL processes and DAX measures to deliver scalable BI solutions that inform business decisions.

London-based role with a fast-growing global sportswear brand and a culture that values practical results and collaboration.

Qualifications

• Extensive hands-on experience with Microsoft Power BI and Power BI Service.
• Strong command of SQL Server / T-SQL and complex queries.
• Experience with ERP data and enterprise data modeling.
• Ability to design and maintain ETL pipelines and data transformation.
• Knowledge of BI governance, security and performance tuning.

Responsibilities

• Own end-to-end Power BI environments and data infrastructure.
• Design and maintain scalable semantic models and datasets.
• Develop and optimize DAX measures and calculations.
• Manage ETL processes, gateways, dataflows, and deployment pipelines.
• Collaborate with business leaders across Sales, Finance, Operations and Supply Chain.

Skills

Power BI

Advanced SQL

ETL

DAX

ERP data

Data modeling

SQL Server

Data governance

Tools

SQL Server

Power BI Service

Dataflows

Gateways

Job description

Senior BI Developer | Power BI | Advanced SQL | ETL | Data Engineering

This is an opportunity to join a fast-growing global sportswear and lifestyle brand house at a genuinely exciting point in its journey.

The business is entrepreneurial, ambitious and moving quickly, with an expanding portfolio of internationally recognised brands and plenty happening across the Group.

But what particularly stands out to me is the culture. It is commercially driven, straightforward and built around people rather than layers of corporate structure. Senior management are accessible, down-to-earth and respectful, and good people are trusted to get on with the job.

It is also an environment where you can make a difference.

Rather than simply inheriting systems and processes that are set in stone, you will work collaboratively with business leaders and colleagues to shape, improve and build the BI systems and data infrastructure the business needs as it grows.

For the right BI professional – a hands-on Senior BI Developer - this means ownership, visibility and influence - and the opportunity to see the direct impact of what you build.

We are looking for someone strong in the engine room of BI: advanced SQL Server, ETL, ERP data, data transformation, semantic modelling, advanced DAX and Power BI architecture – someone capable of owning the data and infrastructure behind enterprise reporting.

The Role

You will take technical ownership of the end-to-end Power BI environment and its underlying data infrastructure, working across enterprise datasets, semantic models, ERP data, SQL Server, ETL processes, gateways, dataflows and reporting architecture.

Key responsibilities include:

• Design, build and maintain scalable Power BI semantic models and enterprise datasets
• Write, optimise and maintain complex SQL queries, views and stored procedures
• Own backend SQL logic supporting the Power BI semantic layer
• Manage ERP data structures, extraction and system integrations
• Design and maintain ETL processes and data transformation pipelines
• Develop data cleansing, mapping and validation logic
• Manage Power BI gateways, dataflows, workspaces and deployment pipelines
• Develop and optimise complex DAX measures and calculations
• Implement incremental refresh, partitioning and performance optimisation
• Troubleshoot data integrity, refresh, connectivity and performance issues
• Establish BI governance, security, testing, documentation and version-control standards
• Manage Row-Level Security (RLS) and user access
• Support reporting across Sales, Finance, Operations and Supply Chain
• Act as the internal technical SME for Power BI infrastructure and BI data architecture

What We Are Looking For

You should have substantial hands-on experience in:

• Microsoft Power BI
• Advanced SQL Server / T-SQL
• Stored procedures and views
• SQL query optimisation and performance tuning
• Data transformation
• Enterprise semantic models
• Advanced DAX
• Power BI Service
• Power BI gateways and dataflows
• ERP data structures and integrations
• BI governance and security

Experience working with complex ERP, Finance, Sales, Operations, Supply Chain or Retail data would be particularly relevant.

This opportunity should appeal to a Senior BI Developer, BI Engineer or SQL BI Developer who enjoys getting underneath the reporting layer and taking ownership of the data, SQL, ETL and architecture that make enterprise BI work.

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