O’Neill Service Group (OSG)
Civil EngineeringWashington, United States11-50 Employees
O’Neill Service Group, now operating as Atlas, provides environmental and construction quality assurance services for large-scale transportation, infrastructure, and commercial projects in the Pacific Northwest. The firm supports projects through the full lifecycle—from design and permitting to construction and commissioning—through a multidisciplinary team of scientists, engineers, inspectors, and testers. Based in Redmond, Washington, the company serves public and private sector clients and works on a range of projects including tunnels, rail systems, bridges, roadways, seawalls, and mixed-use developments; the workforce is described as between 11 and 50 employees. Atlas operates as a provider of environmental and construction quality assurance services within the civil engineering sector, handling projects that require coordination of environmental compliance and construction oversight. A concrete recent development is that in June 2026 Atlas signed a new engagement with the Port of Los Angeles to provide construction management for the Avalon Pedestrian Bridge and Promenade Gateway project, signaling expansion beyond the Pacific Northwest.
1-888-653-2347 
support@leadiq.com 
