Meet the Excelsior Team

Excelsior Design, Inc. consists of experienced professionals with over 40 years combined experience in staff augmentation services, engineering, project management and design that allows us to provide the expertise needed to meet our clients’ staffing requirements.

Cheryl Croskrey


Cheryl Croskrey is a co-founder of Excelsior Design, Inc. She has been an integral part of its existence while effectively balancing her family of 4 active children and work. At Excelsior Design she fills the busy role of CEO. She manages human resources, the company’s financial well-being, corporate planning, and logistics. Cheryl is the one who keeps the train on the tracks and running on schedule.
Cheryl has also loved supporting Liberty Christian School, where each of her children has attended, for more than 20 years. Here, she has been the Parent Teacher Fellowship (PTF) President, Booster Club Treasurer, assistant to the athletic directors, a classroom mom, lead on various fund-raisers and a volunteer in countless other capacities.

Mark Croskrey

Director, Business Development

Mark Croskrey is a co-founder of Excelsior Design, Inc. He has been a core member throughout its existence working both in the office and in the field. He has 30 years of experience with design, design-build, business development, and project management. Work that Mark has done includes projects for the Department of Energy, Department of Defense, Research and Development, the commercial nuclear industry, Second Line of Defense Project, D4 (Deactivation, Decommission, Decontamination, and Demolition), and commercial Architectural and Engineering firms. He also started up and ran a successful NQA-1 UL508A certified industrial control panel fabrication shop.
Mark has a passion for his involvement in working with people in need. He enjoys helping out at the Tri-Cities Union Gospel Mission, has made multiple trips to Haiti to help with mechanical maintenance needs at the Haitian Christian Mission, and is currently involved in a project to provide clean water to LEA orphanage in Dongobesh, Tanzania. Please feel free to talk to him about getting involved.

Jason Modrell

Director, Operations

Mr. Modrell has been engaged in technical project management for over 20 years. His career focus has been the development and implementation of new technology in the environmental, energy and information technology sectors for the DOD, DOE and venture capital-backed commercial world. With professional stints at Pacific Northwest National Laboratory, Infinia Corporation and Energy Northwest, Mr. Modrell has a wide understanding of client needs and is able to translate those needs into quality candidates. He holds a Bachelors degree in Chemistry and a Masters degree in Chemical Engineering, both from Oregon State University.

Michael Croskrey

Operations Specialist

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