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Alliant Systems

Alliant Systems is the leading service and design-build mechanical contractor in Oregon and Southwest Washington. We provide our customers with a full spectrum of high quality specialized mechanical services at competitive prices – new construction, tenant improvement, engineering, maintenance, controls, energy services, and commissioning. We have engineered and constructed buildings of all sizes and uses including, office, institutional, educational, multi-family, and healthcare.

Our field workforce is highly skilled and we have many individuals, both in the field and the office, who have worked together for more than 25 years. The experience and level of communication this brings to a project is invaluable to our clients. Our reputation in the construction industry is second to none.
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We design / build / maintain complex systems for productive environments.... Read more


We promise a fulfilling, mutually beneficial partnership on every project we are a part of. We’re passionate about each stage in a building’s lifecycle – early engineering and design, into construction and beyond into maintenance and services.... Read more


Our mission is to provide mechanical engineering, construction and maintenance services to our customers with dependability, technical expertise, and passion.... Read more

Additional Culture Details

Our company philosophy of supporting and allowing our team members to explore and pave their own careers is a pillar of our organizational culture. Succeed or fail, we support our people to try out their ideas and have ownership of organizational progress.... Read more


High Standards
We strive to be the best at what we do.


Portland, OR


225 US Employees


Heating, Ventilation, Air Conditioning, & Refrigeration

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