Cassie Withrow

Executive Administrator+Administrative Services Manager

Excellent customer service comes naturally to Cassie, who approaches every task with a can-do attitude. As Executive Administrator, she enjoys working with people that encourage her and test her limits but allow her to have fun along the way. She manages her time—and many others’—with extraordinary ease and keeps things running like a well-oiled machine. Outside the office, you’ll find Cassie hiking, exploring the city, and when the sun comes out, boating on Lake Washington—all with her husband and pups by her side.

GLY

Cameron Cole

Senior Project Engineer

A Bellevue native, Cameron built the foundation for his career through several internships at GLY and earning a BS in Construction Management from Weber State University. His project experience thus far has focused on downtown Bellevue, including the Lincoln Square Expansion and West Main mixed use development. Off the jobsite, he’s an avid outdoorsman – hunting, fishing, skiing, and backpacking – and volunteering as a member of the King County Search and Rescue team. He recently stepped up to serve on the Coal Creek YMCA board of advisors.

Laura Ovsak

Project Manager

RA, AIA, LEED Green Associate

Laura joined the GLY team in 2017 after spending five years with architecture and engineering design teams. Her varied design experience provides a deep understanding of the design process, and a fluency in the design language. Having worn many hats at GLY, she has developed a diverse skillset, carrying many projects through their phases. Laura recently completed the process of becoming a licensed architect!

John Schimke

Director of Field Operations

Maintaining a personal philosophy centered on family and teamwork, John has skillfully delivered many high technology projects in his 30+ years in the construction industry. Having spent the majority of his career at GLY, he has led all operational aspects of a project from preconstruction planning through finished product. A mentor to our superintendents and crew supervisors, and creative problem-solver, John continues to infuse his projects with the highest and most innovative level of service.

Tyler Tonkin

President+CEO

Since joining GLY in 1998, Tyler has played a pivotal role in shaping the company’s culture and project delivery excellence. Now serving as President and CEO, he brings a collaborative spirit, deep technical expertise, and a strategic mindset to every facet of the business. Tyler’s leadership has guided some of GLY’s most complex and transformative projects—from integrated hospital expansions to urban highrise developments. His commitment to client advocacy and team empowerment continues to inspire innovation and elevate performance across the organization.

Kyle Morgan

Project Executive

LEED Green Associate

Kyle joined the GLY team immediately after earning a BS in Construction Management from the University of Washington in 2006. His honesty and affability have been a mainstay, and he takes a forthright approach to resolving issues and ensuring client satisfaction. After all these years, he still looks forward the unique challenges that come with each individual project and appreciates that no two days are ever alike. While things keep him on his toes at the jobsite, Kyle unwinds by listening to his favorite CDs and records or going to live concerts. Music just sounds better when it’s an experience!

Stephanie Justice

Marketing Strategist

Dwight Hansch