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
1. Designing, building and maintaining the enterprise semantic layer for high‑performance reporting and analytics
2. Leading the delivery of a performance management framework with certified metrics and a single version of the truth
3. Developing and optimising Power BI datasets and reports, applying advanced performance, security and usability best practices
4. Implementing row‑level security and access controls to protect sensitive data
5. Partnering with Data Modellers and Engineers to translate complex requirements into scalable technical solutions
6. Prototyping and validating designs using Databricks (SQL, Python, PySpark)
7. Establishing scalable BI build, release and deployment processes, including monitoring and issue resolution
8. Embedding data governance, data quality and compliance standards into BI solutions
9. Managing and mentoring BI Engineers, supporting skills development and career growth
10. Promoting knowledge sharing, best practice and continuous improvement across the BI community
11. 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:
12. 5+ years’ experience in BI, data engineering or analytics roles
13. Experience managing or leading technical delivery and resources
14. Advanced experience with Power BI, including semantic modelling and performance tuning
15. Strong hands‑on experience with Databricks (SQL, Python, PySpark)
16. Excellent understanding of data quality, governance and security
17. Experience working with modern data platforms, including Azure Data Lake and Delta Lake
18. Strong background in data warehousing, reporting and analytics
19. Experience with relational and dimensional data modelling
20. Ability to gather, document and translate business requirements into high‑value BI solutions
21. Confidence using agile delivery methods and tools such as Jira and Confluence
22. Excellent communication, stakeholder management and mentoring skills
23. A proactive, self‑managing approach and a passion for improving how BI is delivered at scale
Technical knowledge (desirable)
24. Azure data services, including Azure Data Lake, ADF and serverless functions
25. Power Query (M) and DAX
26. REST APIs and data integration
27. Metadata, lineage management and data cataloguing
28. Performance tuning and optimisation techniques
29. Experience with domain‑oriented or data mesh architectures
Qualifications
Essential
30. Microsoft Certified: Power BI Data Analyst Associate
31. Databricks Certified Data Engineer
Desirable
32. Degree in Computer Science, Data Engineering or a related discipline
33. Experience in data governance or data privacy roles
34. Scrum Master certification or equivalent leadership experience
Why join us?
35. Play a key leadership role in Southern Water’s data and analytics transformation
36. Shape how enterprise BI is delivered across the organisation
37. Work with modern cloud‑based data and BI technologies
38. Hybrid and flexible working
39. Competitive salary, pension, bonus and a comprehensive benefits package