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.

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.

Looking Good!

Thumbs up!

All smiles in the sheet metal shop!

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

Precision is key

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

Our Estimating Department took some remote controlled drone selfies!

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)

Getting ready to let it ride!


Faces of Success

Noah Walker

Commissioning Technician

Years with MacMiller:
1999-2000 and then full time since 2004.

We start’ em young:
My “first” memorable day at MacDonald-Miller was when I was about 8 years old, and my dad couldn’t find a babysitter so I came to work with him. He was going to a job he couldn’t bring me on for a few hours, so he pawned me off to Dean Grasser who was working on the Ferry Tacoma at Todd Shipyard. I carried some filters down to the ferry for him, safety glasses and hard hat on of course, and helped him change them out. That day I told myself “I’m working for MacDonald-Miller when I grow up!”

What my coworkers may not know about me:
It always amazes people when I tell them that I have sailed from Mexico to Seattle via Hawaii. A couple of years after that, I sailed from Seattle to Mexico. Then, I spent a year sailing around Mexico crewing on different people’s boats that I met along the way in exchange for room and board.

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.

Our Offices


Ph: 206-763-9400

Corporate Mailing

PO Box 47983 / Seattle, WA 98146-7983

Corporate Street

7717 Detroit Ave SW / Seattle, WA 98106

Madison Office

1004 Madison Street / Seattle, WA 98104

Prefabrication Shop

3701 S Norfolk / Seattle, WA 98118



Ph: 855-MAC-HVAC


3211-1/2 Broadway Ave / Everett, WA 98201



Ph: 206-763-9400


12031 Northup Way / Suite 201 / Bellevue, WA 98005



Ph: 206-763-9400


2500 S Holgate St / Tacoma, WA 98402



Ph: 971-244-0901


12911 NE Airport Way / Portland, OR 97230



Ph: 971-244-0901


5250 Highbanks Road / Suite 310 / Springfield, OR 97478



Ph: 541-526-0655


1555 SE 1st Street / Redmond, OR 97756


Moses Lake

Ph: 509-766-6637


500 South Lasco Lane, Suite 227 / Moses Lake, WA 98837

Our Locations