BI Developer

Harnham · London, London

BI Developer at Harnham, based in London, London. This is a permanent role with hybrid working.

Salary
Competitive
Location
London, London · Hybrid
Contract
Permanent
Posted
14 hours ago
Closes
22 Nov 2026
Sector
Software Developer

Reference https://www.harnham.com/job/e1aeb1da-8723-4ba1-d23d-08d5948a7341-bi-developer-lo

About the role

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BI Developer
London/Hybrid
Up To £60,000

This is an excellent opportunity for a BI Developer to join a specialist data consultancy delivering high-impact projects for clients across the private capital and investment sector. You’ll work on complex data integration challenges, gain exposure to a variety of client environments, and play a key role in building scalable data solutions that drive business decision-making.

The Company
They are a growing data and technology consultancy that helps investment-focused organisations unlock greater value from their data. Combining advisory expertise with a proprietary data platform, they deliver solutions across reporting, analytics, system integration, and operational efficiency. With an established client base and a strong reputation in their market, they offer a collaborative environment where individuals are encouraged to take ownership and develop their technical expertise.

The Role
As a BI Developer, you will work closely with analysts, developers, and client stakeholders to design and deliver robust data solutions.
Key responsibilities include:

  • Building and maintaining ETL pipelines across a range of client environments
  • Developing, optimising, and supporting complex T-SQL solutions
  • Designing and enhancing semantic, tabular, and dimensional data models
  • Supporting data warehousing initiatives and reporting capabilities
  • Developing and maintaining DAX calculations and analytical models
  • Troubleshooting data issues and resolving technical challenges
  • Collaborating with analysts to translate business requirements into technical solutions
  • Working directly with client data environments and contributing to solution design
  • Supporting the delivery of data integration projects across varying architectures and technology stacks
  • Managing changing priorities while maintaining high-quality delivery

Your Skills & Experience
You will ideally have:

  • Strong commercial experience with SQL, preferably T-SQL
  • Experience designing and building ETL pipelines
  • SQL Server development experience
  • Strong understanding of data warehousing principles
  • Experience with dimensional modelling, including concepts such as star schema, semantic models, tabular models, and Kimball methodologies
  • Exposure to DAX and analytical modelling
  • Experience working across complex data environments
  • Strong stakeholder communication skills and the ability to work with evolving requirements
  • Experience within a consultancy or project-based environment, or evidence of delivering multiple concurrent initiatives in a fast-paced setting
  • Python experience would be advantageous but is not essential

What They Offer

  • £50,000 – £60,000 base salary
  • Hybrid working model with three days per week in the London office
  • Fixed-term contract with strong potential for longer-term opportunities
  • Exposure to leading organisations within the private capital and investment space
  • Opportunity to work with modern data technologies and proprietary platforms
  • Varied, project-driven work across different client environments
  • Investment in professional development, training, and certifications
  • A collaborative culture that values autonomy, ownership, and continuous learning

How to Apply
If you’re a BI Developer with strong SQL, ETL, and data modelling expertise looking to broaden your experience within a specialist consultancy environment, please apply with your CV to be considered.

To Apply for this Job Click Here

Reference: https://www.harnham.com/job/e1aeb1da-8723-4ba1-d23d-08d5948a7341-bi-developer-lo · Posted 14 hours ago · Closes 22 Nov 2026 · Listed via Harnham

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