Salas O'Brien is an employee-owned engineering and technical services firm established in 1975. The company provides engineering and consulting services for government and private sector clients across North America, operating from more than 120 offices. Its work spans sectors including healthcare, data centers, aerospace, education, process manufacturing, and government projects.
The firm's technical practice covers MEP/FP engineering, structural design, civil engineering, sustainability consulting, digital automation, robotics, and forensic consulting. It is ranked #31 on Engineering News-Record's Top 500 Design Firms list and #5 among the top 100 MEP firms in North America. Revenue has grown 900% since 2015.
With over 5,000 team members, roughly 90% are employee-owners. The firm reports a 92% team member retention rate. Salas O'Brien states its mission is advancing the human experience through the built environment.
