Business Intelligence Developer

Harnham; Greater London; Hybrid; GBP 41,000 - 50,000; Full time

Benefits offered by this job

Hybrid working

One day a week in London office

Career development

Collaborative team

Job summary

Harnham is seeking a Power BI Developer in London to own end-to-end reporting solutions across marketing, customer, and commercial teams. The role focuses on high-quality Power BI dashboards, semantic models, and insights to influence business decisions.

You will work with stakeholders to gather requirements, build and maintain reports, and promote self-service analytics in a hybrid London setting.

Qualifications

• Advanced DAX skills.
• Solid SQL knowledge.
• Experience building semantic data models.
• Strong stakeholder engagement.
• Ability to translate business questions into reports.
• Experience owning dashboards through lifecycle.
• Marketing analytics or customer insight reporting.
• Exposure to Microsoft Fabric and Azure.

Responsibilities

• Building and maintaining Power BI dashboards and reports.
• Designing and developing semantic models within Power BI.
• Writing DAX measures and calculations to support reporting needs.
• Gathering requirements from stakeholders and translating them into solutions.
• Supporting customer, marketing, and commercial insights initiatives.
• Delivering ad hoc analysis and reporting when required.
• Training end users and promoting self-service analytics.

Job description

London (Hybrid, 1 day per week in office) | £45,000

This is an excellent opportunity for a Power BI Developer who enjoys owning reporting solutions from end to end and wants to work in a growing data function with strong executive support. You'll join a lean, high-impact team where your dashboards, semantic models, and insights will directly influence commercial and marketing decisions across a large customer-focused organisation.

The Company

This organisation is a nationally recognised consumer-facing business with a strong heritage and a significant footprint across the UK. They are investing heavily in data, analytics, and customer insight, with senior leadership fully committed to using data to drive business performance.

The Role

As a BI Developer, you will focus on delivering high-quality Power BI reporting solutions that enable better decision-making across marketing, customer, and commercial teams.

Key responsibilities include:

• Building and maintaining Power BI dashboards and reports


• Designing and developing semantic models within Power BI


• Writing DAX measures and calculations to support business reporting needs


• Working closely with stakeholders to gather requirements and translate business questions into effective reporting solutions


• Supporting customer, marketing, and commercial insight initiatives


• Ensuring reporting accuracy, consistency, and best practice governance


• Delivering ad hoc analysis and reporting when required


• Training end users and promoting self-service analytics adoption


• Contributing to major customer data and digital transformation programmes


• You'll work closely with stakeholders across CRM, digital marketing, product, and commercial functions, helping them better understand customer behaviour, campaign effectiveness, acquisition performance, and overall business performance.

Your Skills & Experience

• To be successful in this BI Developer role, you'll have:


• Advanced DAX skills


• Solid SQL knowledge and experience working with large datasets


• Experience building semantic data models


• Strong stakeholder engagement and requirements gathering skills


• Confidence translating business needs into actionable reporting solutions


• Experience owning dashboards and reports throughout their lifecycle


• The ability to work independently and manage competing priorities


• Marketing analytics or customer insight reporting


• B2C or consumer-focused environments


• Customer acquisition, engagement, or retention reporting


• Reporting governance, QA, or best practice implementation


• Exposure to Microsoft Fabric and Azure environments

What They Offer

• Salary of up to £45,000


• Hybrid working with one day per week in the London office


• Collaborative and supportive team environment


• Significant ownership and visibility across the business


• Opportunity to influence a growing data and analytics function


• Exposure to senior stakeholders and strategic projects


• Modern Microsoft data stack including Power BI, SQL, Microsoft Fabric, and Azure


• Strong career development opportunities as the team continues to grow

Please note that sponsorship is not available for this position. Applicants must have the unrestricted right to work in the UK.