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Leadership Team

David E. Thielen
Customer Success

David is the founder & CEO of Tahoma Consulting Group.


David started Tahoma Consulting Group on the premise that a company that has passion, business acumen and IT thought leadership could create solutions that focus on business challenges first and technology second. 


He brings a wealth of experience covering over 25 years of customer focused results in key leadership and consulting roles for Microsoft, KPMG Consulting, T-Mobile and the U.S. Air Force. He has an outstanding track record of driving business value across both Business and IT strategies.


David earned his MBA from the University of Washington - Michael G. Foster School of Business

Ezhilan (Ez) Kaliyaperumal
Solution Delivery

Ezhilan Kaliyaperumal, is responsible for leading the technology practice.


Ezhilan brings extensive leadership and technology experience in delivering solutions to the high-tech, communication, and finance industries.


Ezhilan has over 20 years of experience delivering complex global technology solutions for Microsoft, AT&T Wireless, T-Mobile, RealNetwork, Citibank and Accenture Consulting. He delivers effective leading-edge technology solutions to customers that leverage proven software development methodologies, PMP, Six-Sigma and Agile methodology.


Ezhilan has a Bachelor of Science Degree from University of Madras, Post Graduate Diploma in Application Software Development and Project Management from University of California.

We would love to partner with you and your organziation on your journey to more Customer Success, let's meet​" 

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