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.
Monty Kilcup
Principal
Monty brings tremendous energy and ingenuity to his clients. He built his career at GLY by delivering creative, value-based preconstruction services, and accurate, timely estimating based on his deep knowledge of current market unit pricing and trends in commodity pricing. Monty works closely with an agile group of construction management, design, and craft professionals who flex to the ever-evolving needs of a project. He is a specialist in the occupied environment, always thinking outside project confines to develop innovative solutions.
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.
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.
Caitlin Eckert
Project Engineer
LEED Green Associate
Bringing a personable and bubbly attitude to project teams, Caitlin has no trouble connecting with any kind of client, owner, or architect. She finds the variability of a Project Engineer’s day-to-day to be fascinating and especially values her time on site which gives her a visual understanding of her work and the project as a whole. Driven by the same sense of curiosity and adventure outside of work, Caitlin stays very active with a variety of hobbies. When she is not trail running, skiing, or climbing, you’ll find her sewing winter adventure hats and hanging out with friends.
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.
Elie Egan
Assistant Superintendent
Elie feels at home taking leadership on her jobsites, working with a team-first attitude, taking pride in the lasting relationships she builds with her colleagues, and ensuring everyone knows the great value of their contributions. Being a firm believer of “work smarter, not harder”—Elie addresses problems critically, always searching for ways to improved solutions and streamline processes through LEAN principles to reduce labor while simultaneously improving quality and minimizing errors. You can also find Elie feeling very much at home on skiis, her stand up paddleboard, and hiking and backpacking on the weekends.