Biography
I have recently retired from ExxonMobil as a systems chemist. I am now looking for an opportunity to be employed as an Excel/PowerPivot developer (Power BI Desktop).
I achieved the Microsoft Excel MVP (Most Valuable Professional) rating from Microsoft in 1995-2003. I was one of the original MVPs selected when the program was created. I worked as a freelance Excel developer concurrent with my chemist job for 22 years.
To see my latest innovations in this area, go to:
http://dhexcel1.wordpress.com/
My contributions to the PowerPivot community of knowledge can be viewed at
http://powerpivot-info.com/authors/David-Hager.
I have been a teacher in high school, college and industry.
I developed an Excel add-in freeware product (SciencePak 1.0 for Excel) that was selected by PC/Computing Magazine (1996) as one of the top 1001 of all downloadable files on the Internet.
I authored the famous Excel Experts E-Letter, which published top Excel developer tips and tricks (as well as my own).