Senior BI Developer

Department: Data

Employment Type: Permanent - Full Time

Location: Remote, UK

Description

Key Responsibilities

• Design, build and maintain high-quality Power BI reports, dashboards and semantic models that support operational, commercial and strategic decision-making.
• Develop robust data models, relationships and DAX measures, ensuring reporting solutions are performant, reliable, secure and scalable.
• Use SQL to query, investigate, troubleshoot and optimise complex or imperfectly documented data environments.
• Work with stakeholders to understand business questions, clarify requirements, challenge assumptions where appropriate and translate needs into practical BI solutions.
• Apply strong data visualisation and storytelling principles so reports clearly highlight trends, exceptions, context and recommended areas of focus.
• Plan and deliver BI projects or significant work packages independently, managing priorities, dependencies, testing, risks and communication throughout.
• Take ownership of complex problems from investigation through to resolution, identifying practical options and escalating appropriately when needed.
• Contribute to development standards, documentation, peer review, knowledge sharing and mentoring across the BI team

Skills, Knowledge and Expertise

• Advanced Power BI development experience, including report design, data modelling, DAX, relationships, optimisation and maintaining production reporting solutions.
• Strong SQL skills, including the ability to write, troubleshoot and optimise complex queries.
• Experience investigating data quality, data structure and business logic issues in unfamiliar or complex environments.
• Ability to turn complex data into clear, accessible and decision-focused insight for different audiences.
• Proven experience planning and delivering BI, analytics or data projects to agreed timescales.
• Strong stakeholder engagement skills, with the ability to interpret, clarify and challenge requirements.
• Good judgement, accountability and problem-solving capability, with the confidence to progress work independently.
• Commitment to high standards in testing, documentation, knowledge sharing and continuous improvement.

• Ownership and accountability: Takes responsibility for work from initial investigation through to delivery and handover, without requiring repeated follow-up.
• Clear and early communication: Provides progress updates and raises risks, blockers and potential delays before delivery is affected.
• Proactive problem-solving: Investigates issues independently and identifies possible solutions rather than only reporting problems.
• Appropriate escalation: Recognises when further investigation is unlikely to be productive and seeks support at the right time.
• Curiosity and analytical thinking: Independently seeks to understand the underlying data, business process and existing logic.
• Reliability and responsiveness: Will take ownership of agreed priorities, attend scheduled discussions and proactively arrange discussions where required.
• Collaboration: Works positively with colleagues, participates in team discussions and contributes to shared objectives.
• Knowledge sharing: Documents findings, explains technical decisions and avoids creating processes that only one person understands.
• Quality and attention to detail: Tests and validates work thoroughly, performance, usability and maintainability. Understands issues should be addressed before code review, allowing the review process to focus on assurance and improvement.
• Stakeholder focus: Understands the business outcome behind a request and constructively clarifies or challenges unclear requirements.
• Adaptability and resilience: Remains constructive when requirements change or unexpected data issues arise.
• Continual improvement mindset: Acknowledges gaps in knowledge, responds positively to feedback and demonstrates a willingness to learn.