Salas O'Brien is an employee-owned engineering and technical services firm founded in 1975. It provides comprehensive engineering and consulting services to both government and private sector clients, operating from more than 120 offices across North America. The firm has grown to encompass over 5,000 team members, with approximately 90% holding an ownership stake in the company.
The firm's technical work spans a range of disciplines relevant to the built environment and advanced systems. These include MEP/FP engineering, structural design, civil engineering, sustainability consulting, digital automation, robotics, and forensic consulting. Salas O'Brien serves industry verticals such as healthcare, data centers, aerospace, education, process manufacturing, and government projects.
Salas O'Brien ranks among the top engineering firms in North America, holding the #31 position on the ENR Top 500 Design Firms and the #5 spot among the top 100 MEP firms in the region. The company has achieved 900% revenue growth since 2015 and reports a team member retention rate of 92%.
