Sebastian is the SQL Stylist at llc ( After receiving his PhD in Computer Science at the University of Linz, Austria he spent several years at a global Fortune 50 company as software architect responsible for code quality and performance of dozens of large-scale database installations throughout the US.

In 2010, to fully engage in his passion for SQL Server, he founded Since that time, he has been helping his clients to boost their SQL Server health and performance, enhance their T-SQL coding skills and tighten their SQL Server security.

A sought-after educator and published author, Sebastian shares his knowledge regularly within the worldwide SQL community through his writings and public speaking engagements. Additionally he is coauthor of tSQLt, the Database Unit Testing Framework for SQL Server. tSQLt is open source and available at

Sebastian is currently serving as president of the Philadelphia SQL Server User Group (, a nonprofit that is dedicated to further the education of the local SQL Server community.