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 + Civic
      • 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
Professional portrait of GLY employee Barrett Moulton.

Barrett Moulton

Yard Superintendent

Dennis Sizemore

Cement Mason Superintendent

Sarah Cunningham

General Foreman

Stephanie Justice

Marketing Strategist

Demetrios Stamatakis

Senior Project Engineer

Tyler Tonkin

President+CEO

Annika Gaffney

Human Resources Director

Headshot of Amereo Forks

Amereo Forks

General Foreman

Laura Soma

Sustainability Manager

All People

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

2026 GLY Construction, Inc.

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

General Foreman

As a General Foreman, Sarah is known for always thinking ahead and looking out for everyone’s best interest. She enjoys the camaraderie on the jobsite and the pride that comes from persevering and building something together. A recent project of Sarah's featured a major geothermal energy system, and she used that experience to teach others at GLY about geothermal energy and how different types of systems can be used. Her hobbies include hiking, cycling, gardening, and traveling the world every chance she gets. But her favorite thing? Golden Retrievers!

Stephanie Justice

Marketing Strategist

Demetrios Stamatakis

Senior Project Engineer

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.

Annika Gaffney

Human Resources Director

With over 20 years of experience spanning construction, retail, and hospitality, Annika has mastered the art of building and maintaining a positive, inclusive work culture that fosters employee well-being and engagement. Holding a BS in Business Administration with an emphasis on Marketing, Management, and Entertainment from the University of Montana, Annika brings a blend of creative problem-solving and innovative strategies to her role at GLY. When not at work, she can be found enjoying the outdoors, attending concerts, or cheering at sporting events. Growing up playing softball and spending five years managing, assisting, and playing on the company coed softball team, Annika knows how to bring people together — both on and off the field. As the youngest of six, her experience with juggling multiple personalities is put to good use in HR! Annika is also a proud supporter of Sawhorse Revolution, the AGC Education Foundation, and JDRF Beat the Bridge.

Headshot of Amereo Forks

Amereo Forks

General Foreman

As a decisive person with a positive and open-minded attitude, Amereo enjoys the everyday team collaboration. As a General Foreman, Amereo makes good job-site morale and cohesive team environment a priority. He finds joy in seeing the building team bring a client’s vision to life from start to finish. At home, Amereo enjoys tackling small projects and spending time with his family. Fun fact: Amereo is a twin!

Laura Soma

Sustainability Manager

LEED AP BD+C, LFA

It’s no wonder that Laura’s passion is helping people find their potential. She’s worked hard to creatively forge her own career path and achieve her goals. She is active in a number of industry groups and peer networks focused on green building and leads GLY’s internal sustainability efforts. Her background as a Project Manager allows her to connect with clients and project teams to drive sustainability project goals while keeping budget and schedule at the forefront. Laura brings her love of responsible practices [and infectious good spirits] to every project.