Timothy G.

Power BI & Fabric Specialist, and SQL Server Data Engineer with 25+ years in data platforms and software delivery, specializing in building and optimizing data warehouses and ETL/ELT pipelines for analytics and reporting. Fully UK based. Recent work includes designing and administering SQL Server DW solutions from scratch; ingesting data from relational sources, flat files, and JSON-based REST APIs; query/index tuning; and partnering with stakeholders to deliver reliable datasets for Power BI and paginated reporting. Core technologies: SQL Server (T-SQL, stored procedures, performance tuning, SQL Agent), Power BI (DAX/Power Query, RLS), Python, C#, Azure / Fabric, SSRS (paginated reports). What I deliver • End-to-end data engineering: source-to-warehouse ingestion, dimensional modelling (star/snowflake), data quality checks, documentation, and operational support. • Performance and reliability: query/index optimization, troubleshooting, and making pipelines run predictably within tight batch windows. • Clear delivery in contract environments: able to work independently, integrate quickly, and mentor others (T-SQL, data warehousing and Power BI fundamentals). • Stakeholder-facing: requirements capture, data definitions/metrics alignment, and presenting outputs to technical and non-technical audiences. Based in London (updated April 2026)