Leadership Team

Dr. Jim Deller

Jim joined the ClearSign team in 2019, bringing 28 years of burner experience and over a decade of operating and sales experience in China. Over the course of Jim’s career he has held roles in project management, sales and as chief combustion engineer. Most recently,  Jim spearheaded the Honeywell UOP Callidus burner sales division and successfully led international teams to develop and introduce new technologies, expand into new markets and increase global burner sales.

Jim leads all segments of ClearSign’s research and development, sales and business management divisions. Jim’s reputation of superior technology development and understanding of industry goals and challenges provides him the necessary experience and foresight to enhance ClearSign’s business model through the development of strategic partnerships within his industry network.

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Dr. Jim Deller
Dr. Jim DellerChief Executive Officer

Meet Our Team

Brian Fike
Brian FikeChief Financial Officer
Brian joined ClearSign in January 2016 with 22 years of financial experience and 10 years financial reporting and strategy management. Read More
Dr. Donald W. Kendrick
Dr. Donald W. KendrickChief Technology Officer
Donald brings almost 30 years of experience from the combustion field with specific expertise in developing ultra-low emissions solutions… Read More
Jeff Lewallen
Jeff LewallenBusiness Lead for the Refining and Petrochemical Product Lines.
Jeff joined ClearSign with 27 years’ experience in the burner industry, including the management of… Read More
Steve Sock
Steve SockVP of Business Development
Steve came to ClearSign in July of 2017 with 25 years of industry experience, primarily performing business winning duties… Read More
Manny Menendez
Manny MenendezPresident ClearSign Asia
Manny has more than 35 years of industry experience building and operating businesses in China and throughout… Read More
Brittney Oltman
Brittney OltmanOperations Specialist

Employee Spotlight

Brittney is new to ClearSign and is based in the Tulsa, OK office. Like many at ClearSign, Brittney wears multiple hats, but her main duties are as a buyer, supporting our finance team and controlling expenditures, developing ClearSign’s marketing and media output and coordinating and expediting our sales activities. As one of her first projects, Brittney has had a large role in the development of this new website.

“This was a great move for me. Things are happening quickly, and everyone is so passionate about what they’re doing. I’m very happy to be here and to be a part of what ClearSign is developing. Welcome to our new website!”

Our Core Values