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Mid-Level Mechanical Engineer

Salas O'Brien
Irvine, CA Full Time
POSTED ON 1/9/2026
AVAILABLE BEFORE 3/4/2026
The expected base salary range for this role is $85,000-$95,000 per year. Actual compensation will be determined based on a number of factors including skills, experience, qualifications, and location.

This role is also eligible for performance-based bonuses and a comprehensive U.S. based benefits package, including:

  • Medical, dental, and vision insurance
  • 401(k) with company match
  • 5 weeks of paid time off and company holidays
  • Wellness programs and employee assistance resources
  • Professional development support

For more information, visit our full benefits overview here - www.salasobrien.com/benefits

Job Summary

The Mid-Level Mechanical Engineer serves to focus on the design of mechanical systems for new facilities, additions, and renovation projects. This will require providing technical leadership for the creation of construction drawings and specifications, existing system studies and master planning efforts. Qualified candidates will meet with clients, project teams, code officials, contractors, and others to address mechanical issues to develop effective working relationships. The project clientele includes K-12 Education, Higher Education, Commercial, Health Care, Science and Technology, municipal and institutional facilities.

General Duties

  • Develop HVAC system designs of a given project based on scope of work and/or client RFPs
  • Provide engineering design, evaluation, and planning of mechanical systems for a variety of market types
  • Perform Load/Energy calculations with software such as Trace 700, IES and similar programs
  • Conduct existing building surveys and documentation of existing HVAC systems
  • Develop system design calculations and selection of equipment for use in buildings
  • Write/edit project specifications
  • Prepare detailed design documents, reports, and studies
  • Code compliance research
  • Coordinate work with other disciplines
  • Provide construction administration services
  • Perform QA/QC of design work
  • Oversee and provide guidance to junior engineers
  • Lead project teams and serve as the primary contact for clients
  • Assist in the procurement of new work; including the development of client relations and participation in project interview

Skills

  • Good communication skills, combined with organizational skills, the ability to plan, balance and prioritize work
  • Ability to lead a team and work as a team
  • Proficiency in Auto CAD, Revit, and MS Office
  • Ability to travel

Qualifications

  • You have a Bachelor’s degree in Mechanical Engineering
  • You possess a Professional Engineer (PE) license
  • You have a LEED certification / experience
  • You have a minimum of 8 years design experience
  • You have knowledge in the design of HVAC systems
  • You have knowledge and understanding of codes, standards, and design guidelines
  • You have an excellent work ethic and attitude

Location: Irvine, CA (Hybrid)

Travel: up to 20%

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.

Equal Opportunity Employment Statement

Salas O’Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O’Brien will accommodate the disability-related needs of applicants as required by law.

Third-Party Agency Notice

Salas O’Brien does not accept unsolicited resumes from external recruiters or agencies. We only work with approved partners engaged directly by our Talent Acquisition team for specific searches. Unsolicited submissions will not be eligible for placement fees.

Salary : $85,000 - $95,000

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