Company History

Shirk & O'Donovan was built on the idea that innovative structural solutions begin with a thorough, thoughtful game plan, a game plan that is developed conversationally with our clients and partners. We have a long history of successfully implementing these plans and helping deliver on-time projects that meet the aesthetic and financial aspirations of our clients.

Design Philosophy

At Shirk & O'Donovan, we practice the art and science of structural engineering as we help bring architectural concept and vision to life. As artists, we bring creative and, when appropriate, bold thinking to the team. As scientists, we deliver precise yet practical solutions that meet the intent of complex building codes and are consistent with the fundamental laws of physics. We enjoy being a part of projects that make a difference in the quality of our lives: places for people to gather, places for people to learn, places for people to shop and be entertained, and places for people to heal. We enjoy the longstanding relationships we have developed with our clients. We enjoy doing what we do, and we think you will enjoy working with us.

Core Values

Our Core Values form the bedrock on which our practice and our designs are founded. We define our culture and set our vision looking forward on these values:

Client Service

Embrace the mission. We exist to serve the best interest of our clients.

  • Loyal
  • Responsive
  • Available
  • Proactive


Do what's right. Guided by the Engineering Code of Ethics and our own moral compass, we pursue the simple truth.

  • Ethical
  • Honest
  • Principled
  • Trustworthy


Teamwork breeds success. We actively listen and transparently share our thoughts as we create innovative solutions.

  • Lasting Partnerships
  • Trusted Advisors
  • Team


Be bulletproof. We aim for perfection and believe in continuous improvement in our processes and our quality program.

  • Smart
  • Consistent
  • Practical
  • Thorough
  • Prepared


Think outside the box. We say "Can do" when others say "Can't be done." We enjoy collaboratively solving problems and celebrating our people and their accomplishments.

  • Making It Happen
  • Innovative
  • Unique


Our people are our practice. They are the foundation of our success, our innovation, our commitment to our clients. Working quickly and collectively, we solve problems and get to "Yes, it can be done."

Bill Shirk photo

Bill Shirk P.E.

Owner/Senior Partner

Pat O'Donovan photo

Pat O'Donovan P.E.

Owner/Senior Partner

Marc Motter photo

Marc Motter P.E.

Partner/Project Manager

John Brewer photo

John Brewer P.E.

Partner/Project Manager

Greg Stidham photo

Greg Stidham P.E.

Director of Development

Guy Mazzotta photo

Guy Mazzotta P.E., S.E (CA)

Director of Technology

Jon Dowdle photo

Jon Dowdle P.E., S.E.

Project Manager

Carrie Messerly photo

Carrie Messerly P.E.

Senior Project Engineer

Sarah Mohr photo

Sarah Mohr E.I.T.

Project Engineer

David Cortnik photo

David Cortnik P.E.

Project Manager

Patrick Marshall photo

Patrick Marshall  

CADD/Revit® Technician

Nancy Sohalski photo

Nancy Sohalski  

Office Manager

Nisha Bhatta photo

Nisha Bhatta E.I.T.

Project Engineer

Jeff Collins photo

Jeff Collins  

Special Projects Coordinator

Chad Simms photo

Chad Simms E.I.T.

Project Engineer

Dan Yard photo

Dan Yard P.E.

Project Manager

Nate Yencho photo

Nate Yencho P.E.

Project Manager

Michael Brown photo

Michael Brown P.E., S.E.

Senior Project Engineer

Abdisa Musa photo

Abdisa Musa P.E., S.E.

Project Engineer

Stephanie Arbuckle photo

Stephanie Arbuckle

Project Engineer


  • American Institute of Steel Construction
  • American Society of Civil Engineers
  • American Concrete Institute
  • National Society of Professional Engineers
  • Ohio Society of Professional Engineers
  • Structural Engineering Institute
  • Structural Engineers Association of Ohio
  • LEED© Green Associate
  • National Council of Examiners for Engineering and Surveying
  • Former Officer, NE Chapter of the Ohio Society of Professional Engineers
affiliations graphic


We currently hold professional engineering registrations in 46 states and 3 Canadian provinces.


innovation graphicWe are continuously exploring the latest in 3D data-rich software, both for 3D structural analysis and Revit modeling. We are committed to the intelligent use of these technologies, as they provide excellent tools that are consistent with our core values of client service, collaboration, excellence, and inspiration. BIM, when properly implemented, facilitates productive workflows between engineers and architects; this enhances the exchange of information and produces a better coordinated design. Ultimately, our BIM models can also be used in concert with our construction partners to facilitate real-time scheduling and cost control decisions with 4D and 5D modeling. As 3D modeling and analysis software continues to advance, the potential for virtual prototyping and the ability to explore virtual design options is limitless. Whether utilizing the latest technologies or simply sitting around the table sketching and sharing ideas, we are committed to doing whatever it takes to produce creative, well-coordinated, and cost-effective design solutions.


At Shirk & O'Donovan, we offer our employees a challenging and rewarding work experience which enables each individual the opportunity to grow their professional career in a fun, relaxed work environment. To obtain the highest level of professional development, we invest in our staff through training, mentoring, continuing education and collaborative work efforts. Because we work in eight diverse construction markets, we offer countless opportunities to fully develop our professional careers.

We understand the importance of achieving healthy work-life balance and the need to unplug, to relax, to get exercise and to be with friends. We believe that all work and no play is no fun. We promote a family-oriented/team approach with a variety of social activities including our weekly staff lunch, our in-office parties, our annual family March Madness party and annual holiday parties.

To discuss opportunities at Shirk & O'Donovan, contact us today. And please feel free to send us a copy of your resume.