Knoebel Construction Executive Team

Matthew Mabie


Matthew Mabie is President of Knoebel Construction. His role is to build client partnerships and drive the strategic direction of the firm in alignment with its core values. Through Matt's direction and vision since 2012, the firm has grown in revenue by more than five-fold and is now ranked among the largest general contractors and fastest growing firms in St. Louis. He has been named a Rising Retail Leader Under 40 by the International Council of Shopping Centers.

(636) 326-4100 x 241

Jessica Carroll

Chief Financial Officer

Jessica Carroll brings 12 years of accounting experience in the construction industry. As CFO, Jessica is responsible for the administrative, financial, and risk management operations of Knoebel Construction and she also maintains financial control systems and develops financial reports.

(636) 326-4100 x 227

Ryan Gierer

Director of Operations

Ryan Gierer has over 10 years in the construction industry. As Director of Operations, he is responsible for overseeing all aspects of select retail center, restaurant, grocery and retail store construction projects, both in St. Louis and nationally.

(636) 326-4100 x 222

Bryon Muir

Director of Business Development

Bryon Muir brings 24 years of experience in the construction industry. As Director of Business Development, Bryon's responsibilities include growing clientele nationwide in retail, retail center, restaurant, grocery, automotive and healthcare/wellness markets and pursuing opportunities to expand into new industries for Knoebel Construction. He joined Knoebel Construction in 2011 and has held roles as Project Manager and Senior Project Manager.
(636) 326-4100 x 224

Joe Pankratz

Director of Preconstruction

Joe Pankratz brings nearly 15 years of experience in the commercial construction industry. He and his team work tirelessly to deliver uncompromising quality and value to clients to create lasting business partnerships. As the Director of Preconstruction, Joe oversees all of preconstruction activities to ensure timeliness and accuracy of proposals and budgetary exercises while providing innovative solutions, detailed risk analysis, strategic planning and development and resource management.

(636) 326-4100 x 223


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