O & S Services
Engineering Consulting and Electrical Engineering.
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Find the right engineering partner.
Explore capabilities, project experience, and office locations to build your shortlist.
Explore capabilities, project experience, and office locations to build your shortlist.
Engineering Consulting and Electrical Engineering.
Architecture and MEP Engineering.
Kent, WA
Innovative Professionals Designing Enduring Facilities
Mineola, NY+1
Integrity | Excellence | Trust
Abilene, TX+5
Providing professional mechanical, electrical, and plumbing engineering services.
Wallingford, CT
From Concept to Production, Faster, Smoother, With Less Risk.
Ann Arbor, MI
Experience. Reliability. Integrity.
Chicago, IL
Clients' Architecture & Engineering Vision Made Real
Memphis, TN
Your vision brought to life.
Melbourne, FL
Over 50 years of expert consulting solutions
Pleasanton, CA
Mechanical Engineering and Heating and Air Conditioning Design.
Glastonbury, CT
Mechanical Engineering and HVAC Systems.
Lenexa, KS+14
Engineering Excellence with Comprehensive Full Service Solutions
Washougal, WA
Engineering a better way.
St. Louis, MO+3
Integrity. Initiative. Innovation.
Bridgeport, WV
Rooted in Alaska, focused on its future
Anchorage, AK+2
Designing Tomorrow, Embracing Today
Bangor, ME+3
M.E.P. Engineering Consultants
Elmwood, LA
Our customers expect satisfaction. We earn loyalty.
Building Systems Engineering and Electrical Engineering.
Dunn, NC
Providing mechanical and electrical engineering services in Alaska since 1996.
Anchorage, AK
Create ahead.
Lansing, MI+1
Integrated architectural and engineering design solutions.
Ogden, UT
MEPT engineering for complex buildings
Cleveland, OH+5