
** 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:
People love to work at MacDonald-Miller, and it’s because we all share the same Core Culture Values:
Design Engineer Interns: This is where you come in.
We’re hiring two Design Engineer Interns to join our Engineering Department! Our team turns big ideas into practical HVAC and plumbing designs for commercial, industrial, and medical facilities. You’ll work alongside Professional Engineers, gain hands-on experience with engineering drawings and calculations, and learn how mechanical systems help buildings operate efficiently and reliably.
Our Design Engineer Interns report to Lead Engineers and work with a collaborative team on projects that support our growing business.
Your Background: What kind of person will thrive in this role?
Compensation: You will be paid $26/hr for the duration of your internship.
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! Or if you know someone who currently works at MacDonald-Miller, reach out to them to get introduced to the team!
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.

MacDonald-Miller Facility Solutions is a full-service, design-build mechanical contractor in the Pacific Northwest.
We take pride in being the contractor of choice for mechanical engineering, design-build construction, custom metal fabrication, building system service, maintenance, and energy management programs. With award-winning service, and as a State of Washington & Oregon approved Energy Services Company, we partner with building owners and managers to make their buildings work better.