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Mid-Level Mechanical Engineer

Job in Tustin, Orange County, California, 92780, USA
Listing for: Salas O'Brien
Part Time position
Listed on 2026-06-02
Job specializations:
  • Engineering
    Mechanical Engineer, Engineering Design & Technologists, Systems Engineer, Environmental Engineer
Job Description & How to Apply Below
Mechanical Engineer

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-impact career-and they'll receive great total rewards along the way.

About Us:

Founded in 1975, Salas O'Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow's requirements are today's opportunities, and we are here to design lasting solutions for pressing challenges.

We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

Job Summary:

The Mechanical Engineer will focus on engineering and delivery of mechanical system design for healthcare and other complex facilities. The role will entail managing engineering projects, directing designers & other disciplines, as well as personally performing engineering activities and engaging in project meetings.

Responsibilities:
  • Provide a superior level of technical services to our clients for their projects and technical support requirements, providing technical and project control direction, and mentoring other engineers and designers.
  • Provide engineering design, evaluation, and planning of mechanical systems for healthcare, life sciences, higher education, and data center market types.
  • Perform engineering calculations, system sizing, and assist with equipment selection.
  • Identify, formulate, and initiate solutions to complex problems requiring multiple-discipline involvement, along with discipline-specific analytical tools.
  • Perform work activities on an individual basis or within a project team with limited need for supervision.
  • Coordinate work activities that affect the quality of project control, scope development, proposals, engineering & design, document control, inspection & testing, and commissioning.
  • Identify and resolve routine problems that involve the use of conflicting or incomplete information.
  • Data gathering and site assessments at customers' facilities.
  • Review and editing of project specifications with minor assistance.
  • Proficient knowledge of California code requirements, including California Building Code (CBC) and HCAI-specific requirements.
  • Coordinate with multidisciplinary teams to support project delivery across design and construction phases.
  • Develop bidding documents for process equipment, fabrication, and construction.
  • Ability to review Revit production models and work interactively with support staff in development of project deliverables.
  • Support client interactions and participate in project meetings as needed.
  • Assist with QA/QC reviews to ensure accuracy, quality, and compliance with applicable codes and standards.
Skills:
  • Advanced expertise with Autodesk software (Revit, Navisworks).
  • Ability to perform HVAC load calculations utilizing Energy Soft and Trace energy modeling software.
  • Ability to comprehend, contribute to, and carry out strategies to manage our relationships with customers, suppliers, and alliance team members.
  • Experience at a design engineering firm required.
  • Demonstrated ability to work independently and take initiative to drive projects forward.
Team Contribution & Development:
  • Collaborate with senior engineers and project managers to deliver projects on schedule and within scope.
  • Support proposal development and technical input for projects as needed.
  • Participate in knowledge sharing and continuous improvement of design standards and best practices.
  • Contribute to a positive team environment through effective communication and collaboration.
  • Continue to build technical expertise in specialized mechanical systems.
Qualifications and Experience:
  • Bachelor's Degree in Mechanical Engineering.
  • 5-10 years of experience engineering and managing mechanical systems projects from start to finish for the built environment.
  • Client engagement.
  • Registration as P.E. preferred.
Location:
Tustin, CA (on-site with remote half day on Fridays).

Travel:
Up to 30%.

Compensation & Benefits:

Salas O'Brien health and…
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