Closing Date 26/05/2026 Senior BI Engineer Location: Hybrid – Durrington Hours: 37 hours per week Contract: Permanent Salary: Competitive benefits Who are we? Southern Water is building a modern, trusted data platform to support better decision‑making, regulatory performance and customer outcomes. Our Business Intelligence teams play a critical role in turning complex data into clear, actionable insight across the organisation. The role As a Senior BI Engineer, you will play a leading and strategic role in designing and delivering enterprise‑grade business intelligence solutions. You’ll take ownership of the semantic layer and advanced Power BI reporting within a domain‑aligned agile squad, ensuring that solutions are scalable, performant, secure and well‑governed. Working closely with the Platform Lead, Data Modellers and a wide range of stakeholders, you’ll translate complex business requirements into robust technical solutions, validate architectural designs, and champion high standards of data quality, reliability and cost‑effective delivery. In addition to technical leadership, this role includes line management and cross‑matrix leadership responsibilities, where you will mentor BI Engineers, grow capability across squads and help build a strong BI engineering community. What you’ll be doing Designing, building and maintaining the enterprise semantic layer for high‑performance reporting and analytics Leading the delivery of a performance management framework with certified metrics and a single version of the truth Developing and optimising Power BI datasets and reports, applying advanced performance, security and usability best practices Implementing row‑level security and access controls to protect sensitive data Partnering with Data Modellers and Engineers to translate complex requirements into scalable technical solutions Prototyping and validating designs using Databricks (SQL, Python, PySpark) Establishing scalable BI build, release and deployment processes, including monitoring and issue resolution Embedding data governance, data quality and compliance standards into BI solutions Managing and mentoring BI Engineers, supporting skills development and career growth Promoting knowledge sharing, best practice and continuous improvement across the BI community Actively contributing to agile ceremonies and driving iterative delivery and innovation What we’re looking for We’re looking for an experienced BI professional who combines strong technical expertise with the ability to lead, influence and mentor others. You’ll have: 5 years’ experience in BI, data engineering or analytics roles Experience managing or leading technical delivery and resources Advanced experience with Power BI, including semantic modelling and performance tuning Strong hands‑on experience with Databricks (SQL, Python, PySpark) Excellent understanding of data quality, governance and security Experience working with modern data platforms, including Azure Data Lake and Delta Lake Strong background in data warehousing, reporting and analytics Experience with relational and dimensional data modelling Ability to gather, document and translate business requirements into high‑value BI solutions Confidence using agile delivery methods and tools such as Jira and Confluence Excellent communication, stakeholder management and mentoring skills A proactive, self‑managing approach and a passion for improving how BI is delivered at scale Technical knowledge (desirable) Azure data services, including Azure Data Lake, ADF and serverless functions Power Query (M) and DAX REST APIs and data integration Metadata, lineage management and data cataloguing Performance tuning and optimisation techniques Experience with domain‑oriented or data mesh architectures Qualifications Essential Microsoft Certified: Power BI Data Analyst Associate Databricks Certified Data Engineer Desirable Degree in Computer Science, Data Engineering or a related discipline Experience in data governance or data privacy roles Scrum Master certification or equivalent leadership experience Why join us? Play a key leadership role in Southern Water’s data and analytics transformation Shape how enterprise BI is delivered across the organisation Work with modern cloud‑based data and BI technologies Hybrid and flexible working Competitive salary, pension, bonus and a comprehensive benefits package