Barrett Moulton
Yard Superintendent
Nate Hill
Senior Project Safety Manager
OSHA Certified CSHS, CHST
Nate is serious about safety. With 20 years of industry experience, he brings deep expertise in safety leadership and risk management to GLY projects of all shapes and sizes. He oversees jobsite safety programs and leads companywide training, staying ahead of evolving standards and protocols. Nate believes safety is fluid—requiring constant awareness, adaptability, and accountability.
An OSHA-certified Construction Safety + Health Specialist [CSHS] and Construction Health +Safety Technician [CHST], his credentials run long [and impressive]. Outside of work, he’s also a certified diver and lifelong animal lover. When he’s not focused on keeping people safe, you’ll find him surrounded by five wiener dogs, two cats, and one very sassy Norwegian Fjord horse.
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.
Todd Karr
Project Executive | Healthcare+Life Science
DBIA
For 30 years, Todd has partnered with healthcare and life science organizations to deliver spaces that support patient care, research, and innovation. His experience spans preconstruction, project delivery, and market leadership, with a particular passion for building strong relationships and developing successful teams. A DBIA professional and advocate for collaborative delivery, Todd is known for bringing people together around a common goal. A lifelong Washingtonian and University of Washington graduate, he enjoys golfing, spending time with his family, and cheering on the Huskies, Seahawks, Mariners, and the long-awaited return of the Sonics.
Garth Stoppard, Jr.
Superintendent
As a second generation carpenter, Garth turned out to be a Jr. in more ways than one. Today Garth is a hard-working Superintendent who enjoys building challenges across sectors, from housing to commercial construction. Garth takes a very thorough, caring approach to getting things done on his projects, and enjoys the outdoor life in his spare time—especially riding dirt bikes, camping or doing anything on or near the water.
Jeff Crawford
Principal+Healthcare/Life Science
Jeff is a Principal at GLY and leads the firm’s healthcare and life science market sector. He specializes in alternative delivery models and brings strong expertise in preconstruction planning and estimating for everything from large hospital campus expansions to critical equipment replacement. With a BA in Architectural Studies from the University of Washington and nearly two decades at GLY, Jeff combines his design background with project management skills to guide teams on highly technical, complex facilities. Outside of work, he enjoys playing basketball, running, and hiking with his family.
Brian Sandall
Superintendent
LEED Green Associate
Brian’s 30+ year career includes many of GLY’s most recognizable healthcare projects. He will do whatever it takes to keep clients happy and is known to keep a stash of chocolate hard hats on hand for hospital staff just in case. If you’ve ever met Brian, you know he operates under the Golden Rule every single day, making him a favorite to work with. Brian spends many weekends looking for a thrill—from riding off road on the dunes with his wife and son to taking flight lessons—with no plans to slow down any time soon.
Dennis Sizemore
Cement Mason Superintendent
Dennis is the go-to guy on anything and everything concrete. At age 15, he poured and finished driveways, patios, and shop slabs. When he started at GLY at 18, he was the youngest journeyman in his union. Today, he's a concrete master who oversees projects up to one million square feet. His favorite aspect of the job is the constant change of scenery since he's not on one single project for an extensive amount of time. While concrete is a big part of Dennis’s life, he makes plenty of room for his kids, fishing, hiking, and visiting Kauai, his happy place.