Directors & Officers

Hermann Kramer

P.Eng, President and Chief Executive Officer

Hermann Kramer is the current President and CEO of Roke Technologies  Ltd. Hermann brings 20+ years experience in sub surface wireline measurements including international experience in the Middle East and Asia Pacific. In 2008, Hermann was instrumental in forming Roke Technologies Ltd., acquiring the intellectual property and operating assets from Roke Oil Enterprises. Hermann is a professional engineer, cofounded the Canadian Society for Gas Migration, and is a member of SPWLA  and APEGGA. Hermann holds a Bachelor of Science degree from the University of Calgary in Electrical Engineering.

Brett C. Wrathall

P.Geo, Director

Brett is a professional geologist with over 18+ years of experience in the oil and gas industry including 10+ years growing and managing private oil and gas companies. He is currently a co-founder, Director and Sr. Vice President of the privately held oil and gas company Caltex Resources Ltd.  Prior to Caltex Resources, Brett was a co-founder, Vice President and Director at Caltex Energy Inc.  Previously, he occupied various geological roles with both Krang Energy Inc. and Husky Energy.

James Neff


Mr. Neff holds a B.Sc in Electrical Engineering from the University of Waterloo. He brings 35+ years of oil field experience including wireline, testing, logging while drilling, extended reach well engineering and downhole telemetry technology development. He has held a number of different positions in his career including President & CEO, Marketing & Sales manager, Operations & Sales manager, Business Development manager and Repair & Maintenance manager. Mr. Neff has been a Business Development Director for Roke USA Ltd. since April 1, 2011.

Konstantin Valouiski


Mr. Valouiski holds a M.Sc in Geophysics and brings 27 year experience to Roke. His experience ranges from wireline formation evaluation, QHSE, training, business development, and sales & marketing. He has held a number of positions including Director of Quality Control North America, Business Development Russia, and Sales Lead & Marketing Specialist. Mr. Valouiski has been Director of Business Development Eurasia for Roke Technologies since July 7, 2011.

Jean-Michel Gires

M.Sc, Director

Jean-Michel Gires is an engineering graduate from France’s École Polytechnique and École des mines de Paris, with 37+ years experience in the energy sector. He had 8 years experience with Nuclear and Renewable energies before 25 years working with TOTAL in a number of positions including founder of TOTAL Energy Ventures, VP North Sea, Venezuela and President & CEO TOTAL E&P Canada. He has dedicated the last 4+ years to Breakthrough Innovation for the Energy Sector. Jean-Michel is resident in Calgary and joined Roke’s board in December 2017.