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Salas O'Brien

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Salas O’Brien is an employee-owned engineering firm dedicated to enhancing the built environment while prioritizing sustainability, team growth, and impactful client solutions.

Irvine, California

Engineering Services
1,001–5,000 people

About

Salas O’Brien is an employee-owned engineering, science, 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 over a decade on the Inc. 5000 list of North America’s fastest-growing private companies.

Open positions

Intermediate Structural Engineer

On-site · Woodbridge

Lead the design and analysis of structural deliverables for heavy industrial projects, including calculations, reports, and 3D models. Coordinate with multidisciplinary teams and clients to ensure efficient project execution from concept through construction.

Senior Technical Recruiter, Engineering & Architecture (Remote Canada)

Remote · Canada

Manage the full recruiting lifecycle for specialized engineering and architecture roles, focusing on proactive sourcing of passive candidates. Partner with hiring managers to build talent pipelines and deliver diverse candidate slates across multiple business units.

Plumbing & Drainage Designer

On-site · North Vancouver

Design and deliver plumbing, drainage, and fire protection systems for various building projects, including new constructions and renovations. Responsibilities include preparing coordinated mechanical drawings in Revit and AutoCAD and performing design calculations.

Project Associate – Building Science

On-site · Toronto

Support building science and restoration projects through condition assessments, design development, and construction contract administration. Conduct field reviews to ensure conformity to building codes and prepare detailed technical reports and specifications.

Mechanical Project Manager

Hybrid · Ottawa

Serve as the primary on-site mechanical representative for a major healthcare construction project in Ottawa. Responsibilities include reviewing mechanical installations, managing shop drawings and RFIs, and coordinating between contractors, owners, and engineering teams.

Design Project Manager – Data Centre Projects

Remote · Canada

Lead the planning and execution of multidisciplinary design projects for mission-critical data centers across North America. Manage the full design lifecycle from proposal through construction documentation, ensuring projects are delivered on schedule and within budget.

Plumbing Fire Protection Project Engineer

Remote · ["Toronto, Ontario, Canada"]

At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future. Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-…

Building Science Project Manager

Hybrid · Toronto

The Building Science Project Manager will lead building envelope restoration projects and conduct building condition assessments. Responsibilities include preparing reports, developing cost estimates, and overseeing construction reviews to ensure compliance and quality.