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Location
In office (Seattle)
Seniority
Intern
Employment
Internship

Confirmed on the employer's own hiring board on Nov 9, 2026. First seen by Alion on Nov 9, 2026. MacDonald-Miller scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Understand the importance of a mechanical contractor and their expertise in managing heating, cooling, and plumbing systems.

** DISCLAIMER: If you did not see us on your school's campus, please feel free to apply. Our internship recruiting process can take up to 2 months, so we appreciate your patience. **

At MacDonald-Miller Facility Solutions (“MacMiller”) we make buildings work better. As the Northwest’s leading mechanical contracting firm, we design, deliver and service HVAC, plumbing and automation system solutions for commercial buildings. With our 1,600 employees across 15 offices - there is a breadth and variety of work to keep you engaged and inspired.

We enjoy a well-respected history of exceeding our customers’ expectations and executing with distinction. Our clients trust their toughest projects with our integrated teams, including:

  • New construction - From an architectural 3D model to a completed 40 story urban building that is on time and on budget
  • Special projects - Updates/remodeling for existing commercial buildings for new efficiencies
  • Service - On demand and scheduled maintenance ensuring tenant comfort
  • Building performance - Control systems and automation for energy improvement and minimal surprises
  • Energy and Sustainable Solutions: Acting as the Prime Contractor, we deliver design-build energy-efficient solutions in the built environment for private and public sector clients

People love to work at MacDonald-Miller, and it’s because we all share the same Core Culture Values:

  • Collaboration - Diverse players, one team, a common vision. Collaboration is our foundation and critical to the success of the company. Every team member is valued and brings a diversity of strengths to help us meet our common vision.
  • Dedication - We are dedicated to personal and professional excellence. We execute with distinction by doing the right thing and following through on our commitments.
  • Safety - Everyone deserves a safe workplace. Safety is more than hardhats and boots, it’s an attitude and the environment we create. Every day, everyone goes home to their families.
  • Community - We are proud to be part of MacDonald-Miller. We actively seek to build relationships and know each other as individuals. Together we create an environment that is welcoming, caring, and trusting.
  • Innovation - We are committed to continuous, creative problem solving. Innovation is how we stay an industry leader. We always strive to challenge and better ourselves.
  • Fun! - Take the work seriously, but never ourselves too seriously. It’s possible to be both serious professionals and good-natured people you enjoy working with. We strive to be both.

Requirements

Project Management Interns: This is where you come in!

We’re hiring nine Project Management Interns for summer 2027! Join MacDonald-Miller to gain hands-on experience in mechanical construction, learn from experienced project leaders, and explore a potential career with our team.

Top deliverables to be a hero:

  • Build your knowledge. Learn how HVAC, plumbing, and mechanical systems come together-from estimating and engineering through construction and installation.
  • Contribute to real projects. Support project managers with project documentation, scheduling, equipment and material coordination, and job-site activities. Collaborate with Estimating, Engineering, and Field teams to understand how their work connects.
  • Take initiative. Ask thoughtful questions, seek out learning opportunities, and follow through on your responsibilities.
  • Explore your future. Build relationships, enjoy the experience, and discover whether a career in project management or another area of mechanical contracting is right for you.

Each intern reports to a Senior Project Manager and joins a collaborative team supporting active construction projects and our growing business.

Your Background: What kind of person will thrive in this role?

You should have…

  • An interest in mechanical systems, construction, and project management.
  • A natural curiosity and enthusiasm for solving problems and learning new skills.
  • An in-progress or completed bachelor’s degree in Mechanical Engineering, Construction Management, or a related field.

And everyone you work with should describe you as someone who is…

  • Hard-working and dependable, taking ownership of commitments.
  • Adaptable, responding constructively when priorities or plans change.
  • Positive and resourceful, approaching challenges with a can-do attitude.
  • A clear communicator and collaborative teammate, comfortable asking questions and working with people across different roles.

And you should be motivated by…

  • Taking initiative in your learning. You’ll have guidance and support, along with opportunities to investigate problems, develop solutions, and ask for help when needed.
  • Making a meaningful contribution. You’ll work in a lean, results-oriented environment where your effort, follow-through, and willingness to take on new challenges matter.
  • Being part of the team. Enjoy a transparent, supportive workplace that welcomes new ideas, values strong relationships, and makes room for fun.

Benefits

Compensation: You will be paid $26/hr for the duration of your internship.

Where you will work

Project Management Interns will be based in various offices around the Greater Seattle Area

Our Seattle HQ office (17930 International Blvd, SeaTac, WA 98188) has easy access to the SeaTac International Airport, ample secured parking, and newly renovated office facilities - not to mention great views! Neighborhood amenities include an onsite deli, restaurants, and convenient freeway/airport access.

Interested in learning more?

If you’re ready for an adventure, and are interested in being considered for this role, click apply to start the conversation!

MacDonald-Miller Facility Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

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