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.
Amy Bergman
Project Executive
With GLY since 1999, Amy has managed projects in all sectors and of all sizes. This versatility is what helps her guide teams in keeping the end goal in mind while addressing day-to-day challenges and complex problem-solving. She is an alumnus of the University of Washington with a BS in Construction Management and Minor in Architecture, has served on the board of her local YMCA, and is active in NAIOP and CREW. After work, Amy chases two very active children and the lifelong task of home remodeling.
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].
Steven Li
Senior Estimator
With a 30+ year career in the construction industry, Steven is an Experienced Senior Estimator known for his expertise in Value Engineering, Integrated Project Delivery, Project Engineering, CPM Scheduling, and Constructability. Holding a Master of Engineering in Construction Management and Management Information Systems from the University of British Columbia, as well as an MBA from the University of Singapore and a Bachelor's degree in Building Construction from Shanghai Jiaotong University, Steven brings a wealth of global knowledge to every project. Outside of work, Steven is passionate about staying active and enjoys hiking, jogging, cycling, and other outdoor activities. He’s also training in Filipino martial arts, focusing on Arnis, and is preparing for his black belt test — a journey that combines physical skill with cultural heritage. He is dedicated to promoting human health and wellness, with a personal interest in biology and neuroscience, particularly in areas like weight management and mental well-being. A Seattle resident for over 22 years, Steven roots for the Seattle Seahawks and cherishes time with his wife and teenage daughter.
Garrick Hughes
Principal
LEED AP BD+C
Since joining GLY in 2007, Garrick’s led construction to support the growth of multiple prominent tech companies, as well as high rise build outs and boutique historic re-developments. Managing complex projects and working with a wide spectrum of people and multi-disciplinary firms to meet client commitments and expectations set years in advance of project completion continues to be the focus of his career. Garrick holds an MBA in Finance from Seattle University as well as a BS in Construction Management from WSU, and a Commercial Real Estate Certificate from UW. He became a firm partner in 2019. A Northwest Native, Garrick’s involved in several local community and professional organizations, and never misses an opportunity for an outdoor adventure, exploring mountains with his wife, two daughters, and son.
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.
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.