Michael B.

Senior SQL Server & BI Developer | Performance Tuning | Power BI | ETL

I’m a Senior SQL Server & BI Developer specializing in database performance, T-SQL, ETL, and Power BI. With 15+ years of experience and a proven Upwork track record, I help businesses solve complex data problems — from slow SQL queries and database bottlenecks to ETL pipelines, data warehouses, and Power BI reporting. ### What I can help with **SQL Server & Database Development** * Database design, architecture, and development * Complex T-SQL queries and stored procedures * Query optimization, indexing, and execution plan analysis * Database troubleshooting and performance tuning * PostgreSQL and other relational databases **ETL & Data Engineering** * SSIS / ETL development and optimization * Data integration and transformation * Data warehouse development * Troubleshooting and improving existing data pipelines **Power BI & Business Intelligence** * Power BI reports and dashboards * DAX and data modeling * Performance optimization * SSAS / semantic models * SSRS reporting I also have experience with modern data platforms including Databricks, Snowflake, BigQuery, and Google Spanner, as well as Domo (MajorDomo certified). I’m comfortable working with both legacy and modern data environments — whether you need to troubleshoot an existing system, improve performance, or build a new data solution. If you have a slow query, a problematic database, an ETL process that needs fixing, or a BI solution that needs to scale, I can help.