Committed to the Best

Why work for MacDonald-Miller? At MacMiller, it’s personal. We take our work seriously, and we seriously enjoy working with each other.

We put our employees first because we know they are the company. We appreciate the time, energy, skills, ingenuity, and dedication of every single one of our employees. We show our love and gratitude throughout the year with – our Macfest Employee Appreciation Party, Mac90 Happy Hours, BBQ Events, Softball Teams, Onsite Ping-Pong Tournaments, Health Challenges, Aloha Shirt Fridays, and more.

What does a MacMillian look like? We look for the person who values integrity, creativity, growth, excellence, and community. Someone who believes in our mission to work with each other to make buildings work better. If you are smart and motivated, we want to meet you!

How do we create this company culture? We are not a company of lone rangers. We are a team that wants to work together, sharing knowledge and expertise across departments, to help arrive at one common goal – to be the best in the Pacific Northwest.

See our beliefs   Our Guidelines   Our Commitment

Our Culture

At MacDonald-Miller, it’s personal.


Our Estimating Department took some remote controlled drone selfies!


Looking Good!

MacDonald-Miller Team

Thumbs up!


On this special holiday, we honor those who have served our country. MacDonald-Miller is proud to have a workforce made up of approximately 17% veterans. We are grateful for their service and commitment to our nation. Happy Veterans Day!


A selfie within a selfie within a selfie! MacMillians take MacFest challenges to the next level.


It’s almost time for MacFest!!!!!!!!!!

MacDonald-Miller Transport

Santa’s spreading the holiday spirit in our plumbing fab shop today!




All smiles in the sheet metal shop!

PreFab Shop

Precision is key


Getting ready to let it ride!

MacDonald-Miller Team

Work hard! Play hard! Here’s some of our top notch crew from our 2030 8th Ave project going beast mode this weekend at Meadowbrook Farm for the Subway Beast Mode Challenge (Dion Senger, Mike Kunkel, Joel Phillips, Bryan Kindt and Paul Deines)


Faces of Success

Paul Bonaci


Years with MacMiller:
2 years, this June.

Tight-knit team!
MacDonald-Miller knows how to build great project teams. MacMiller is a good-size firm, so picking the right personalities early is essential to great communication on high-intensity assignments. Technical skills are not enough. We are our industry’s ambassadors, we need to listen to improve what we do, and work to our client’s highest interests for the best designed and performing systems that can be built. My co-workers in the estimating, design, modeling-detail coordination and construction departments are “can do” people who more than hold up their end of the bargain. They carried me and taught me many things as I learned the MacMiller ropes. I appreciate everyone’s patience and trust. A sincere thank you to the special MightyMac people I work with.

Outside of work…
I enjoy vegetable gardening and being a llama whisperer. My father was a veterinarian in Seattle. My two llamas follow me everywhere outside like puppies and normally sleep guarding the front door. My five grandchildren often accompany my wife to Whidbey on weekends to give them their favorite treats.

We’re a winning team

MacDonald-Miller is the premier mechanical contractor in the Northwest. And a huge reason for that is our people. Here, nothing is higher priority than creating an environment where employees can craft their own path, embrace technology, expand their skills, and, just as important, be themselves. We are a 2015 Finalist for “Best Places to Work in Washington”, in large part because our atmosphere is one of creativity and camaraderie, where the level of dedication is matched by the amount of fun we have! Sound like a good fit? Go to to find out more about the wide variety of opportunities we have available in Washington and Oregon

Open Positions

We’re excited that you’re here!

At MacDonald-Miller we value our employees and strive to provide them with the right environment, the right tools, and the right job to support and enhance their unique skills and abilities. How? As one of Washington’s best workplaces we offer a culture of caring with a whole lot of fun. With the right tools for the job, we harness technology to maximize efficiency and safety. With growth opportunities, we work to understand each employee's aspirations while creating a plan to develop their future. And in return, each one has elevated MacDonald-Miller to be the premier mechanical contractor in the Northwest.

Now, guess what - we’re hiring! Our team is growing and we are interested in finding the individuals that will shape the future of our organization. We have a wide variety of opportunities available in Washington and Oregon, and we can’t wait to hear from you.

Want to know what’s available? Click the link to view all current job opportunities!

View All Positions

We make buildings work better.