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Darkened/stylized background image of construction workers cutting wood
Dwight Hansch Headshot

Dwight Hansch

Superintendent

Nate Downs

Assistant Yard Superintendent

Donovan Mabbott

Superintendent

Professional portrait of GLY employee Dennis Sizemore.

Dennis Sizemore

Cement Mason Superintendent

Demetrios Stamatakis

Sr. Project Engineer

Headshot of John Schimke

John Schimke

Director of Field Operations

Headshot of Dan Frye

Dan Frye

Layout Superintendent

Headshot of Rene Gutierrez

René Ansdell

Senior Project Engineer

Headshot of Troy Alexander

Troy Alexander

Project Executive

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2025 GLY Construction, Inc.

Nate Downs

Assistant Yard Superintendent

Since joining GLY in 2010, Nate has been a valuable member of our Tool + Equipment Yard team, playing an integral role in the smooth operation of our projects. In addition to his supervisory duties, Nate also supports projects through GPR scanning services. Outside of work, Nate enjoys spending time with his wife and two adult children. He is passionate about all types of outdoor activities, particularly those shared with his family.

Donovan Mabbott

Superintendent

Over the last 30 years, Donovan’s appreciation for quality craftsmanship combined with his natural ability to manage the many moving parts and pieces of a construction jobsite from start to finish has garnered trust and respect from GLY employees, trade partners, and clients. From interior build-outs to full campus developments, he approaches each project by tapping into each team member’s strengths, talents, and skillsets to develop a thoughtful plan—together. Witnessing that plan unfold successfully is his favorite part of his job. On the home front, there is never a dull moment with his four kids, granddaughter, and three dogs—each bringing joy to the family with their own unique personalities. Skylar, the littlest pup, runs the pack.

Professional portrait of GLY employee Dennis Sizemore.

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.

Demetrios Stamatakis

Sr. Project Engineer

Headshot of John Schimke

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.

Headshot of Dan Frye

Dan Frye

Layout Superintendent

Dan is GLY’s go-to guy for anything and everything relating to site surveys and layout. As a consummate team player and expert on layout technology, Dan is responsible for not only planning and coordinating project needs with superintendents, but also for training and educating the GLY Layout Crew and helping The Yard with long range equipment planning. When he’s not out in the field, Dan is 100% family man, spending as much time with his wife and kids as he can.

Headshot of Rene Gutierrez

René Ansdell

Senior Project Engineer

LEED Green Associate

René’s background in construction management and architecture provide her with a fluency in both languages, adding value to each of her projects through this diverse perspective and the ability to see the bigger picture. She is highly detail-oriented, an eager learner, and always emphasizes the importance of staying in close communication. After work, you can find René hiking, painting or drawing, or playing softball and flag football.

Headshot of Troy Alexander

Troy Alexander

Project Executive

LEED AP

Troy’s been managing construction projects in the Pacific Northwest since 2000 and is one of our Interiors + Special Projects [ISP] team leaders. He specializes in unique renovation and improvement work in a variety of market sectors and has a long history of successfully delivering public agency projects using Job Order Contracting [JOC]. Troy enjoys collaborating with professionals of various disciplines to get fast-track projects started and completed on time. Outside of work, Troy enjoys lots of family time, good music, trying a new local beer, and cheering on his favorite sports team.