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WHO IS ZAJAC
Zajac was established in 1975 as a mechanical contractor providing high purity process systems to the dairy industry. Since then we have grown based on the founding principles of quality workmanship, process expertise, teamwork and dedication to customer service. We now employ over 90 employees with offices in Maine and New Hampshire and customers across the US. Our expertise includes process knowledge in Food, Dairy, Beverage, Pharmaceutical and Personal care industries. Our capabilities include Process and Packaging Engineering, Automation, CAD design, Project Management, Skid Fabrication, Process Piping, Electrical Engineering and installation and calibration.
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INDUSTRY SPECIALIZATION
PROJECT HIGHLIGHTS
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OUR MANAGEMENT TEAM
HOW IT STARTED…
Bill Zajac founded Zajac, LLC in a small garage in Gray, ME in 1975. We have since become an industry leader. Zajac is a specialty engineering company that provides complete processing and packaging systems. From concept to completion, Zajac designs liquid processing and packaging systems from the incoming ingredients to finish packaging products.
ABOUT OUR TEAM…
Our dedicated team takes great pride in their work and always take the extra step to ensure work is being done safely and at the highest quality. We utilize the latest technologies to keep one step ahead of our competitors and are never satisfied with just being good – we want to be the best!
WE ARE EXCITED TO HEAR FROM YOU!

WHAT OUR CUSTOMERS SAY
Zajac has been doing essentially all of our process and controls work here at the brewery for the last ten years. Their quality and professionalism has been phenomenal, and I really feel like they care about the final quality of our beer just as do all of our employees here at the brewery.
-ALLAGASH BREWING
We’re filling one of the new tanks as I write, and that wouldn’t have been possible if you and your crew hadn’t done such a great job over the last couple of weeks. Art and Fred and their team did some amazing work!
-BAXTER BREWING
I’d like to applaud you and your team on a job well done thus far. The loop looks beautiful. The precision, craftsmanship, and professionalism your team has exhibited on this project is astounding.
-OXBOW BREWING
We just completed a sizable piping project that was fairly complex and took 5 weeks to complete. I can’t tell you how pleased I am with how it went. Zajac once again proved their status as a “Platinum Vendor”. The following actions led by Ben, Joe, and the rest of the Zajac team that impressed me most were:
The complete generation of P&ID drawings for the plant, the ability to meet every scheduling milestone, the ability to meet the budgeted cost, The ability to tear apart a process and put it back together seamlessly, the cooperation of everyone when faced with hurdles, the professionalism of the welders (especially Roy and Ryan), the ability to coordinate mechanical, electrical, and control disciplines, and clearly the quality of the work!!!
-HP HOOD