Home

    • How We Work
    • Mindful of Outcomes
      • Safety
      • Sustainability
      • Lean
    • Resolving Complexity
      • Preconstruction
      • Collaborative Delivery
      • Self-Performed Work
      • MEP Coordination
    • Shaping the Future
      • VDC
      • Data Management
      • R&D
    • All Projects
      • Markets
      • Advanced Technology
      • Community
      • Education
      • Healthcare
      • Hospitality + Dining
      • Interiors + Special Projects
      • Life Science
      • Mixed-Use
      • Office
      • Residential
      • Senior Living
    • About Us
      • People
      • Community
      • Diversity, Equity, Inclusion + Belonging
  • Careers
  • Insights + News
    • Get in Touch
    • Trade Partners + Suppliers
Darkened/stylized background image of construction workers cutting wood
Dwight Hansch Headshot

Dwight Hansch

Superintendent

Jeff Crawford

Principal+Healthcare/Life Science

Kyla Grennan

Business Development Manager

Josh Lewis

Senior Project Manager

Headshot of Monty Kilcup

Monty Kilcup

Principal

Tyler Tonkin

President+CEO

Headshot of Cassie Withrow

Cassie Withrow

Executive Administrator+Administrative Services Manager

Matt Alvarado

Senior Design Engineer

Professional portrait of GLY employee Andrew Ellis.

Andrew Ellis

Design Manager

All People

  • Contact Us
  • Trade Partners + Suppliers
  • Privacy + Transparency

2026 GLY Construction, Inc.

Jeff Crawford

Principal+Healthcare/Life Science

Jeff is a Principal at GLY and leads the firm’s healthcare and life science market sector. He specializes in alternative delivery models and brings strong expertise in preconstruction planning and estimating for everything from large hospital campus expansions to critical equipment replacement. With a BA in Architectural Studies from the University of Washington and nearly two decades at GLY, Jeff combines his design background with project management skills to guide teams on highly technical, complex facilities. Outside of work, he enjoys playing basketball, running, and hiking with his family.

Kyla Grennan

Business Development Manager

Kyla brings over a decade of experience in commercial real estate and building services. Since 2014, she has helped drive growth through strategic planning, creative thinking, and a passion for building lasting relationships. Known for her attention to detail and client focus, Kyla is trusted by teammates, clients, and partners alike. Her collaborative approach and commitment to innovation make her a key member of our Marketing and Business Development team.

Outside of work, Kyla enjoys spending time with her family and her dog, Lincoln. She's an avid fan of live music and outdoor concerts, always up for a local adventure or cheering on the Mariners and Seahawks! She also enjoys traveling and hitting the golf course whenever she can. Kyla is a longtime member of the Washington State Society for Healthcare Engineering (WSSHE), where she currently serves on the Board of Directors.

Josh Lewis

Senior Project Manager

Organized, decisive, and driven, Josh approaches every project with a clear understanding of the client and company’s needs. His favorite part about his position is that no two projects are every alike, as he is a person who enjoys overcoming the hurdles of a project from start to finish. Quite fitting to his problem-solving nature, he enjoys classic games that require lots of thought and strategy, from chess to backgammon to cribbage. Outside of work he also stays busy coaching youth baseball, softball, basketball, and his son’s Little League All-Star Team, who made it to the State Championship in 2024!

Headshot of Monty Kilcup

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.

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.

Headshot of Cassie Withrow

Cassie Withrow

Executive Administrator+Administrative Services Manager

Excellent customer service comes naturally to Cassie, who approaches every task with a can-do attitude. As Executive Administrator, she enjoys working with people that encourage her and test her limits but allow her to have fun along the way. She manages her time—and many others’—with extraordinary ease and keeps things running like a well-oiled machine. Outside the office, you’ll find Cassie hiking, exploring the city, and when the sun comes out, boating on Lake Washington—all with her husband and pups by her side.

Matt Alvarado

Senior Design Engineer

Professional portrait of GLY employee Andrew Ellis.

Andrew Ellis

Design Manager

AIA, Assoc. DBIA™

Andrew spent 14 years immersed in his original calling: Architecture. He found that the most enjoyable and rewarding moments occurred while collaborating with builders. Deciding to blend two passions together—design and construction—Andrew now leverages robust VDC tools to better understand, communicate, and help execute a project’s design intent. Simply put, he constructs the building virtually to iron out any wrinkles before it’s built in the field. Outside the office, Andrew can’t get enough of the mountains. The numbers speak for themselves. He’s made his way to the summit of Mount Rainier via 16 different routes!