Civil Engineering Intern - Summer 2027

At MacKay, we believe great people are the foundation of our growth and success.

We are in an exciting phase of expansion, creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers. Whether your role is technical or part of our support services team, you play an important role in delivering high-quality work and helping our projects succeed.

MacKay is seeking a Civil Engineering Intern to join our Water Resources team in Fort Collins, CO for 10-12 weeks during the summer of 2027.

Candidates should be currently enrolled in a civil engineering or related program, with a preference given to those entering their senior year. The internship will provide valuable hands-on experience and may cover projects in areas such as water resources, energy, land development, municipal, mining, and more depending on the region.

We’re always looking for ways to help you grow in your career by giving you tasks that stretch your abilities while providing you with the support to accomplish them . You’ll work alongside experienced engineers, contributing to real projects while developing practical skills that will help you grow as an engineer!

This is an opportunity to learn what it’s really like to work as a civil engineer while developing technical skills and building relationships with professionals across a multidisciplinary firm.

Responsibilities:

• Develop practical experience in how to resolve engineering problems and adapt approved engineering methods and standards
• Build foundational experience in how to review and interpret plans, site layouts, specifications or construction methods to ensure compliance to legal requirements and safety regulations.
• Gain hands-on experience with AutoCAD Civil3D.
• Meet deadlines, communicate and work closely in a team environment
• Prepare engineering designs and specifications on assigned portions of a project accurately and in a timely manner.
• Prepare cost estimates with quantities and cost of materials, equipment, or time and cost of labor to determine project feasibility or bond quantity amounts.
• Assist in the analysis of complex engineering data such as, design agreements, design calculations, preliminary specifications, and other technical data.

Qualifications:

• Must be currently enrolled or a recent graduate of an accredited Bachelor of Science degree with major coursework in civil engineering, public works, or a related engineering discipline, or equivalent in work experience.
• Applicants must have a minimum cumulative GPA of 3.2.
• Aptitude and demonstrated hands-on experience with computer applications in Civil Engineering in AutoCAD Civil 3D (Preferred) 
• Excellent computer, writing, communication, and customer service skills
• Proficient in the Google Suite of products

Why Join MacKay?

A people-first culture

At MacKay, we put people first. We are committed to creating an environment where employees can grow, contribute, and do their best work. We support well-being, encourage balance, and create space for people to succeed both professionally and personally.

Meaningful work and real impact

Our teams take on complex infrastructure and environmental challenges that support critical systems and shape the places where people live and work. Every role contributes to delivering that work and making it successful.

Growth and opportunity

We are in an exciting phase of growth, expanding across geographies, services, and markets. That growth creates opportunities for our employees to take on new challenges, build their careers, and contribute in new ways as the company evolves.

A strong and trusted foundation

Built on more than 50 years of experience, MacKay has developed a reputation for quality work, strong relationships, and dependable results. You’ll be part of a team with a solid foundation and a clear direction for the future.

Opportunities to share in success

We provide opportunities for employees to participate in ownership and build long-term financial value as the company grows.

Our Values

At MacKay, our values guide how we work, collaborate, and support one another.

Honesty. We build trust through transparency, integrity, and accountability.

Dedication. We are committed to the success of our team members, clients, and communities.

Relationships. We foster lasting connections that strengthen our work and the teams around us.

Who We Are

MacKay is an infrastructure and environmental services firm built on more than 50 years of experience and a growing collective of expertise.

We are in an exciting phase of growth, expanding our reach, strengthening our capabilities, and bringing together talented teams across the country. That growth is creating new opportunities for our employees to take on meaningful work, collaborate across disciplines, and build long-term careers.

Every role at MacKay contributes to the success of our projects and the clients we serve. Whether your work is technical or operational, you are part of a team that delivers quality, builds relationships, and moves projects forward.

We’re looking for dedicated, talented individuals who deliver excellence, thrive in collaborative environments, and value both meaningful work and work-life balance. If this sounds like you, we’d like to hear from you. 

Please note that the salary information shown below is a general guideline only. Salaries are based upon candidate experience and qualifications, as well as various market and business considerations.

US Pay Range$25—$28 USD

Full-time employees receive a well-rounded benefit package including access to our company-sponsored Medical (including an HSA High Deductible option), Dental, Vision, FSA, and Supplemental Life Insurance plans. We also offer 100% company-paid Life Insurance, Short-Term Disability, and Long-Term Disability coverage. Employees are eligible to participate in our company's 401(k) plan with up to a 4% match. Additionally, employees receive paid vacation and sick time, 11 paid holidays, and are able to participate in employee ownership options. MacKay pays for expenses associated with licensure as well as annual performance bonuses.

Employment requires passing a pre-employment background check and drug screen. 

As a federal contractor, we participate in E-Verify and are proud to be an Equal Employment Opportunity Employer.

Open until filled.