About Us

Clark Dietz was founded over sixty years ago with the idea that we engineer more than infrastructure, we are engineering quality of life. To that end, we operate with honesty, mutual respect and collaboration. We take great pride that our work improves the communities in which we live, work and play. In short, it’s not about us, it’s about you, and we believe that every experience you have with us should be nothing short of exceptional. We follow these values:


We are committed to improving the quality of life for our clients, staff, and communities.


Our employees and clients are all unique and we’re committed to supporting their individual needs and goals.


We take great pride that our work will improve the communities in which we live, work and play.


As an organization we believe in mutual respect, honesty, and transparency in all we do.

Meet Our Leaders

Jerald Payonk, PE
Jerald Payonk, PEChairman of the Board
Wes Christmas, MBA, PE
Wes Christmas, MBA, PEPresident / Chief Executive Officer
Mustafa Emir, PhD, PE
Mustafa Emir, PhD, PEExecutive Vice President of Marketing and Business Development

Our Clients

“Clark Dietz has become a trusted partner in providing infrastructure to meet the current and future demands of our growing community. We have come to trust their integrity, timeliness and ability to complete our projects with an exceptional level of service and quality. I highly recommend Clark Dietz to municipalities that have a long-term vision for their communities and are seeking a partner who understands their growth objectives.”

Wayne Aldrich, PE, Director of Public Works

“One of the primary benefits of working with Clark Dietz is the field knowledge that their designers possess. I have found continuously that project designs and project schedules are implemented without much complication. Their knowledge of materials, process, and IDOT standards is demonstrated in the product they provide. Their attention to detail and ability to resolve issues promptly and quickly avoids costly change orders…”

Todd Baker, Superintendent

Our Culture

We Make a Difference

We understand infrastructure is vital and we never forget its importance. Our ultimate reward comes from collaborating with our clients to generate customized solutions that improve quality of life in the communities we serve.

We Give Back

The world is better when we work together. Clark Dietz Engineering staff volunteer their time, expertise, and leadership around the globe to help create stronger and healthier communities.

We Embrace Diversity

Our flexible, diverse, and collaborative corporate environment respects everyone’s unique perspective and promotes individual and team growth. The result is better teams, solutions, and service to our clients.