Brad Hughes

Senior Project Engineer

PE

Brad is a licensed Civil Engineer with a BSCE from Gonzaga University, but after a few years working in that discipline in Denver, he returned to the PNW to earn a Construction Management certificate from the University of Washington and joined GLY in 2008. His technical engineering skills continue to serve him well in his role as a Senior Project Engineer. He excels in coordinating structural work and large tenant build-outs for healthcare, residential, hospitality, and office high-rise projects. Brad and his family spend their leisure time exploring the world and tackling daunting athletic challenges.

Sarah Cunningham

General Foreman

As a General Foreman, Sarah is known for always thinking ahead and looking out for everyone’s best interest. She enjoys the camaraderie on the jobsite and the pride that comes from persevering and building something together. A recent project of Sarah's featured a major geothermal energy system, and she used that experience to teach others at GLY about geothermal energy and how different types of systems can be used. Her hobbies include hiking, cycling, gardening, and traveling the world every chance she gets. But her favorite thing? Golden Retrievers!

Amanda Smith

Yard Coordinator

As a young girl Amanda lived in Hawaii, where a large portion of her family is Native Hawaiian. After moving to Monroe, Washington she spent her high school years in Mansfield, a small town in eastern Washington. She worked for local trucking company before joining GLY, driving HM350 Haul Trucks around jobsites to load onto lowboy trailers, or she calls them, giant Tonka trucks! As part of GLY’s tool and equipment team, she enjoys supporting Jobs from the ground up and watching as the build happens. Amanda and her husband originally met in middle school and later reconnected. Now you’ll find them riding dirt bikes with their kids and spending time exploring the PNW in their Jeep.

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.

Donovan Mabbott

Superintendent

Over the last 30 years, Donovan’s appreciation for quality craftsmanship combined with his natural ability to manage the many moving parts and pieces of a construction jobsite from start to finish has garnered trust and respect from GLY employees, trade partners, and clients. From interior build-outs to full campus developments, he approaches each project by tapping into each team member’s strengths, talents, and skillsets to develop a thoughtful plan—together. Witnessing that plan unfold successfully is his favorite part of his job. On the home front, there is never a dull moment with his four kids, granddaughter, and three dogs—each bringing joy to the family with their own unique personalities. Skylar, the littlest pup, runs the pack.

Bill Tshudy

General Foreman

A true self-starter, Bill's claim that he can fix anything is backed by a lifetime of hands-on experience. His passion for building began at age 8, assembling bicycles, and continued through his teenage years, when he built cars and fabricated metal frames. By age 21, he had entered the trades, laying the foundation for a career that has since expanded into numerous advanced technology projects with GLY. Outside of work, Bill enjoys fishing and traveling the world with his wife. He is also excited to welcome his first child in September 2026.

Ruby Kahnberg

Project Engineer

Ruby brings a well-rounded perspective to her role as a Project Engineer, combining an academic background in architecture and construction management with hands-on experience working for electrical contractors. She is passionate about the built environment and values the balance between thoughtful design and practical constructability. Outside of work, she enjoys embroidering, thrifting, dancing, and sketching around the Seattle area – often finishing her drawings over a glass of wine.

Elie Egan

Assistant Superintendent

Elie feels at home taking leadership on her jobsites, working with a team-first attitude, taking pride in the lasting relationships she builds with her colleagues, and ensuring everyone knows the great value of their contributions. Being a firm believer of “work smarter, not harder”—Elie addresses problems critically, always searching for ways to improved solutions and streamline processes through LEAN principles to reduce labor while simultaneously improving quality and minimizing errors. You can also find Elie feeling very much at home on skiis, her stand up paddleboard, and hiking and backpacking on the weekends.

Trevor Lunde