Our Culture

Whether we are working with each other, the companies we support, our business partners or the community; collaboration is part of our culture and it’s how we succeed.

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Our Values

At ISS, we value employees who take initiative, are responsible, show initiative, are respectful, and show accountability both inside and outside the workplace.

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Volunteer Events

Diaper Drive

Through the generosity of our employees, we were able to donate 5,850 diapers to Diapering Denver Darlings that were then matched diaper for diaper to reach 11,700 diapers that were distributed to local non-profits.

Denver Kidney Walk

Employees participated in a 5k run/walk to help raise money and awareness for Kidney disease in the United States. Colas ISS also made a donation on behalf of the entire team and encouraged the whole family to participate.

Food Bank of the Rockies

In light of the COVID-19 pandemic, Colas ISS employees decided to raise money in lieu of volunteering their time and were able to raise $4,000 to fight hunger.

Mile High United Way Bridging the Gap

Colas ISS employees donated 20 Thanksgiving meal kits to support the Mile High United Way’s Bridging the Gap program. The Bridging the Gap program helps connect young adults exiting the child welfare system with housing and personalized supportive services that guide them as they transition to adulthood.


I have worked for Colas for 15 years and have progressed in my knowledge and career thanks to Colas and their focus on their employees’ happiness and job satisfaction. Over the years, my managers have always asked what my personal goals are and recommended positions that suited me. I have ended up in a completely different career than I started, one that fits my strengths perfectly. Colas has allowed me to grow, learn and travel – the benefits and opportunities are endless.

Ariel McGee , Project Manager

I have been working here at Colas ISS as a JD Edwards business analyst for the past 3 years. I initially joined Colas ISS as an Intern when I was doing my Masters in Information systems and then decided to join full time since I love the whole company atmosphere where everyone works together as a team for any project’s success. What I like best about working here is we have various different subsidiaries across North America and I get different types of projects to work on every time, each having its own complexity and challenges.

Akanksha Kashyap , Business Analyst

While you often hear many companies paying lip service to how their employees are the most important, they don’t often show that commitment when it comes right down to it. Colas proves daily how much their employees matter and it is very refreshing.

Fred Grossi , Business Analyst

I started working at Colas over 8 years ago with the expectation of adding diversity, development and challenge to my career. Focusing on change and innovation, Colas not only invests in technologies but also in the people who work here. It is a place where you can make an individual difference, which is a testament to the Colas culture of focusing on opportunities, growth ,diversity and creating an environment for employees to succeed. It is a company of amazing people and that’s one of the reasons I love working at Colas.

Rohan Sawant , OnBase Technical Analyst