Steve Heymes

Senior Project Engineer

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.

Isaias Villa Galvan

Senior Project Safety Manager

Tess Wakasugi-Don

Principal+Senior Project Manager

LEED AP

Tess has built her career at GLY, from humble beginnings as an intern, advancing steadily to a promotion in 2019 to firm principal. She is a dedicated, selfless leader who pays careful attention to every project’s specific vision, technical complexities, and goals. Tess is very effective at coordinating the efforts of design professionals, construction teams, corporate stakeholders, and owners while integrating various service providers into project delivery. She chairs GLY’s internal DEI committee, which focuses on social equity education, employee engagement, and strategies to improve diversity and inclusion on GLY’s projects. Her three young sons inspire her daily to feel empowered, to work hard, and to make time for fun.

Mark Humphreys

Senior Preconstruction Manager

LEED AP BD+C

The depth and breath of Mark’s 25 years of experience allows him to provide exemplary estimating leadership on all types of projects. Mark’s expertise in large-scale ground-up or tenant improvement projects made him a welcome addition to GLY, where he operates as a consummate team player and skilled estimator. When he’s not busy spending time with his daughter and stepsons, you’ll find him kicking around a soccer ball, running, golfing, bicycling, or hiking with his chocolate lab.

Stephanie Justice

Senior Marketing Coordinator

Tyler Tonkin

Principal+Executive Vice President

Tyler’s collaborative approach to problem solving and strong technical abilities have helped him successfully lead some of GLY’s most complex and challenging projects. From delivering fully integrated hospital expansions in occupied campus settings to redeveloping a waterfront building into a high-tech research facility with vibration isolation technology, Tyler is driven to chart a course for the team to meet the challenges inherent to the built environment. As both a Principal and member of GLY’s Executive Team, Tyler has built a reputation as a committed client advocate and enthusiastic leader who brings out the best in our teams.

Professional portrait of GLY employee Garth Stoppard.

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.

Troy Alexander