Denis K.

Co-Owner & General Contractor

Denis started working in construction 18 years ago as a helper. Within a year he worked himself up to a lead carpenter. Denis holds an accounting degree and he also graduated with a Bachelor of Science in Construction Management in 2010. After graduating, he was offered a position to consult with one of the leading engineering firms in Akyem, Ghana. The project included all the road and power infrastructure. There were 243 houses, 3 churches and the local school. After Ghana, he transferred back to the United States and was a consultant on many mine sites in Colorado and Nevada. Denis has built some of the most complex projects in the world.

Mike O.


Mike has been in construction his whole life – literally! His father was a project manager and Mike grew up assisting him on various sites and projects around Denver. Throughout his career, he has had the opportunity to work in all aspects of commercial construction – from demolition to working on a variety of commercial projects as a Superintendent. Projects he has worked on have won numerous awards, even being nominated for a Colorado Ace Award for the Platte Valley School District. But his skills do not stop with construction – what sets him apart is his experience as a Maintenance Director and Facilities Manager. He knows buildings both inside and out – with over 20 years of experience building and maintaining them.

Erik G.

Business Development Manager

Erik is a Colorado native, born and raised in the Denver metro area and a graduate of Evergreen High School. Erik got his start in the construction business in 1987 working for a construction supply company in Mesa AZ while attending Arizona State University. He learned the Stonemason trade and progressed through the various stages of the construction process for many years before becoming a partner in a General Contracting company in Phoenix, AZ. He has taken an active role in projects including site selection, design, and interior finishes.

Leslie K.

Strategicic Development Manager

Leslie has over a decade of strategic planning and marketing experience. Originally from Vermont, she moved to Colorado in 2009 to attend Colorado College, where she graduated with Magna Cum Laude with a Bachelor of Arts. Leslie has worked in a variety of different fields, from restaurants to ad agencies, to fashion and construction, allowing her to develop a diversified understanding of business development and marketing strategies and best practices.

Our Subcontractors

At Global Construction, we are very selective about which subcontractors we choose for each job. They must have a history of experience in the specific task, carry the proper licensing, have the necessary equipment, be familiar with any particular safety protocols, demonstrate an expert understanding of the required materials, and have a keen awareness of our needs and expectations for each individual project.

Read About Our Subcontractors

Yuriy K.

Co-Owner & Master Plumber

Yuriy started Global Construction in May of 2014 with his step-son, Denis Koval. Yuriy moved to Denver in 1995 from New York City. He started his plumbing apprenticeship shortly after. In nine short years, he had his Master Plumbing License. Yuriy has been a Master Plumber since 2004. With a ton of experience, he knows most of everything! He was also an ambulance driver in New York City prior to living in Denver. He does not miss New York City! He is co-owner of Global Construction with his step-son, Denis Koval.

Bill B.

Senior Project Manager

Bill started his career as a commercial electrical apprentice. After three years of attending trade school, and working on various commercial projects, he was given an opportunity to become a superintendent for a large production builder. Over the past 20 years, Bill has built hundreds of structures along the front range including a 300-unit apartment complex in Lakewood and The Home Depot in Boulder. He has spent the last 12 years specifically working in the multi-family industry repositioning numerous properties, value add and CapEx projects across the country. The Colorado native graduated from Golden High School and attended IECRM.

Mackenzie M.

Strategic Development Coordinator

Mackenzie Masson is an accomplished professional in marketing, writing, photography, and social media management. As a Colorado native and a graduate of Metropolitan State University of Denver with a degree in Journalism, she has established herself as a growing expert in her field and is excited to be contributing to Global Construction’s already successful business as they continue to grow and expand. Mackenzie finds joy outside of work in traveling, leading a healthy lifestyle, and spoiling her rescue pup, Roman.