Jeff Angehrn

Senior Construction Engineer

Jeff’s building career began in 1995 and he’s simply one of the best when it comes to complex structures; it’s been said that he’s memorized every detail of every sheet of every project he’s worked on. Plus, he’s repeatedly recognized by his teammates as an exceptional mentor. He holds a BS in Construction Management from Central Washington University. Off the jobsite, Jeff’s an adventurous spirit who enjoys time with family and friends, traveling, boating, snowmobiling, off roading, fishing, and hunting in the remote wilderness.

Kevin Eng

Chief Estimator

LEED AP BD+C, Associate DBIA™

Kevin praises the aspect of GLY’s culture that provides a variety of paths for diverse abilities and personalities to flourish. Hired on as a Project Engineer, his exceptional preconstruction planning and cost estimating talent quickly developed. As our Chief Estimator, he provides 24 years of building experience and practical knowledge of construction methods, materials, resources and LEED criteria. A generous mentor and creative thinker, Kevin gets involved to guide and directly support estimating efforts on varied and complex projects at GLY.

Jon Evatt

Assistant Project Manager

LEED Green Associate

With over 13 years of experience in construction—much of it focused on healthcare—Jon brings a practical, solutions-driven mindset to every project. Known for his strong work ethic and passion for building both on and off the job site, he combines technical expertise in civil and project engineering with hands-on know-how. Jon excels at resolving complex construction challenges, aligning design intent with client expectations, and keeping projects on schedule and within budget. His deep understanding of the unique demands of healthcare construction adds value at every phase. Outside of work, Jon channels that same problem‑solving mindset into DIY projects with his wife, son, and daughter, and enjoys staying active through skiing and hiking.

Joaquin Aburto

General Foreman

Joaquin approaches each day on the jobsite with a people-first attitude, emphasizing the importance of a collaborative team culture in finding efficient solutions and creating a learning environment for everyone. One of his favorite aspects of construction is that he leaves each workday having learned something new from his teammates. When he’s not out in the field, you can find Joaquin adventuring in the PNW with his 5 kids.

Tess Wakasugi-Don

Principal

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.

Benji Dimer

Project Manager

LEED Green Associate

Since joining GLY in 2017, Benji has distinguished himself as a trustworthy team leader who is continuously learning all he can. He is often the first to arrive and last to leave—by choice!—as he truly enjoys his work and is always willing to take on new challenges, mentor others, and push himself to keep learning and growing. Benji can also often be found biking and enjoying the outdoors.

Jon Friedrichsen

Project Executive

HCC

Jon attributes his appreciation of craft and hard work to working as a carpenter for a Spokane-based general contractor while earning a BS in Construction Management from Washington State University. Since joining GLY in 1999, he’s honed his expertise as a healthcare and high-tech office project manager and team builder. When he’s not piecing together complex logistics plans, you’ll find Jon cheering on the Seattle Sounders or casting a line. If he could talk his wife into selling everything and living in a trailer down by the river, he’d be there already.

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.

Sarah Cunningham