Dwight Hansch
Superintendent
Isaias Villa Galvan
Safety Director
CSP, CHST
Before entering construction safety, Isaias began his career as a wildland firefighter, where he developed a calm, confident approach to risk management. That experience made his transition into safety and construction management a natural progression. He has since proven himself a strong leader, capable of guiding teams of safety professionals and fostering a culture rooted in accountability and safe work practices, making him the perfect fit for Safety Director at GLY. Outside of work, Isaias stays active through Brazilian Jiu Jitsu, strength training, running, hiking, and golfing, and he enjoys spending downtime reading. Despite calling himself the world’s worst swimmer, swimming remains a favorite hobby [an unexpected passion that perfectly reflects his willingness to embrace any challenges he is faced with].
Danielle Sessler
Senior Project Manager
Associate DBIA™
Construction was always part of the plan for Northwest native Danielle, having grown up in a family that owned a contracting business. She took a few detours first, earning a BFA in Metalsmithing and Art History from Central Washington University and working as a Senior Estimator focused on honing her preconstruction services skills. When she landed at GLY in 2013, we quickly recognized her background would be perfect for Design-Build projects. Outside of work, Danielle enjoys hiking, bouldering, climbing—and collecting “odd things that most people scratch their heads over.”
Josh Lewis
Senior Project Manager
Organized, decisive, and driven, Josh approaches every project with a clear understanding of the client and company’s needs. His favorite part about his position is that no two projects are ever alike, as he is a person who enjoys overcoming the hurdles of a project from start to finish. Quite fitting to his problem–solving nature, he enjoys classic games that require lots of thought and strategy, from chess to backgammon to cribbage. Outside of work he also stays busy coaching youth baseball, softball, basketball, and his son’s Little League All-Star Team, who made it to the State Championship in 2024!
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.
Bill Tshudy
General Foreman
A true self-starter, Bill's claim that he can fix just about 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 21, he had entered the trades, laying the foundation for a successful career in construction supervision. Outside of work, Bill enjoys fishing and traveling the world with his wife.
Joe Sahlin
Superintendent
Joe embodies a team player, believing that “a successful project is not achieved by a sole individual.” He consistently acts as the glue that adheres the various entities coordinating a project to one another, supporting the successful delivery of a high-quality product. Joe’s perspective that client expectations are a baseline to surpass, is a product of his competitive spirit.
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.
Jae Chang
IT Director
Well-versed in translating between technology and business needs, Jae helps GLY make smarter decisions through technology and data. He enjoys working with teams to simplify processes, uncover meaningful insights, and find practical solutions that help people work more efficiently. Outside of work, Jae enjoys fishing, golfing, and trying to keep up on the basketball court. He grew up helping his immigrant parents operate their family-owned Korean restaurant for more than 30 years and is always happy to share recommendations, cooking tips, or family recipes. At home, he and his wife stay busy with their three daughters and a tabby cat who was adopted to help balance the household.