How many employees work at Salas O'Brien?
Salas O'Brien, Inc. has 4,329 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 6.3%.
Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025
About Salas O'Brien
Salas O’Brien is an employee-owned engineering and technical services firm focused on advancing the human experience through the built environment. Our team is engineered for impact™, helping clients achieve critical goals, advancing our team members through growth and opportunity, and operating at the center of important global issues, including sustainability and decarbonization. We are a top firm as ranked by Engineering News-Record and Consulting-Specifying Engineer, and we have appeared for the past eleven years on the Inc. 5000 list of North America’s fastest-growing private companies.
As of September 2025
Salas O'Brien
workforce metrics
Headcount
4.3k
Avg. Salary
$102.3k
Tenure
5.3yr
Growth Rate
6.3%
Hiring Rate
Attrition Rate
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Employee Headcount
Interactive chart of Salas O'Brien annual worldwide employee count from 2023 to 2025.
- Salas O'Brien total number of employees in 2025 was 4,354.934, a 6.3% increase from 2024.
- Salas O'Brien total number of employees in 2024 was 4,128.6, a 5.7% increase from 2023.
- Salas O'Brien total number of employees in 2023 was 3,893.687, a 8.0% increase from 2022.
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Employee Geographic Breakdown
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Active Job Postings
Interactive chart of Salas O'Brien annual active job postings from 2023 to 2025.
- Salas O'Brien active job postings in 2025 was 936, a 11.2% decline from 2024.
- Salas O'Brien active job postings in 2024 was 1,367, a 64.3% increase from 2023.
- Salas O'Brien active job postings in 2023 was 702, a 36.8% decline from 2022.
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Employee Sentiment
Sentiment Topics
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