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Mechanical Assistant Jobs in Riverside, CA (NOW HIRING)

Mid-Level Mechanical Engineer

Tustin, CA · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Mechanical Engineer At Salas O'Brien we tell our clients that we're engineered for impact. This ... Perform engineering calculations, system sizing, and assist with equipment selection. * Identify ...

Mechanical Engineer - Buildings

Riverside, CA

$88K - $126K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... * Assist with research, concept development, and preparation of construction documents and ... Perform mechanical engineering calculations (e.g., load calculations) and support system sizing and ...

Mechanical Engineer - Buildings

Riverside, CA · On-site

$88K - $126K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... * Assist with research, concept development, and preparation of construction documents and ... Perform mechanical engineering calculations (e.g., load calculations) and support system sizing and ...

Mechanical Engineer - Buildings

Irvine, CA · On-site

$94K - $135K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... * Assist with research, concept development, and preparation of construction documents and ... Perform mechanical engineering calculations (e.g., load calculations) and support system sizing and ...

New

Jr. Mechanical Engineer

Lake Forest, CA · On-site

$25 - $33.34/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Mechanical Engineering Manager EMPLOYEE TYPE: Full Time LOCATION: 19772 Pauling, Foothill Ranch, CA ... Research new design processes. * Assist in fixturing design. * Direct the fabrication, assembly of ...

JOB DUTIES: • Lead and assist in the creation and development of mechanical and/or electromechanical designs and systems based on customer and/or internal requirements from concept to ...

Showing results 41-60

Mechanical Assistant information

See Riverside, CA salary details

$9

$19

$30

How much do mechanical assistant jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for mechanical assistant in Riverside, CA is $19.77, according to ZipRecruiter salary data. Most workers in this role earn between $15.82 and $22.07 per hour, depending on experience, location, and employer.

What is the difference between Mechanical Assistant vs Mechanical Technician?

AspectMechanical AssistantMechanical Technician
Required CredentialsHigh school diploma or equivalent; on-the-job trainingTechnical diploma or associate degree in mechanical technology
Work EnvironmentAssists in maintenance and repair tasks, often working under supervisionPerforms hands-on repairs, troubleshooting, and maintenance independently
Employer & Industry UsageUsed across manufacturing, construction, and maintenance sectorsCommonly employed in industrial, manufacturing, and mechanical service industries

Mechanical Assistants typically support mechanical teams with basic tasks and require minimal formal education, while Mechanical Technicians perform more complex repairs and troubleshooting with technical training. Both roles are essential in mechanical maintenance, but the Technician role involves greater technical expertise and independence.

What are the key skills and qualifications needed to thrive as a mechanical assistant, and why are they important?

To thrive as a Mechanical Assistant, you need a basic understanding of mechanical systems, manual dexterity, and a high school diploma or equivalent. Familiarity with hand tools, power tools, and maintenance management systems is typically required. Attention to detail, reliability, and the ability to follow instructions are crucial soft skills for this role. These skills ensure safe, efficient support for mechanics and help maintain smooth operation of equipment and machinery.

What are some common challenges mechanical assistants face when supporting senior technicians or engineers?

Mechanical Assistants often encounter challenges such as adapting to rapidly changing project priorities and learning to use a variety of specialized tools and equipment efficiently. They may also need to quickly absorb technical instructions and follow detailed safety protocols, especially when working in fast-paced environments like manufacturing or maintenance facilities. Clear communication and proactive problem-solving are key, as Mechanical Assistants frequently collaborate with technicians, engineers, and other team members to ensure projects stay on track.

What is a mechanical assistant?

Mechanical Assistants are support professionals who help mechanical engineers and technicians with tasks such as assembling, maintaining, and repairing machinery or mechanical systems. Their duties often include handling tools, preparing materials, performing routine maintenance, and assisting with troubleshooting mechanical issues. They play an essential role in ensuring equipment runs smoothly and efficiently in various industries, including manufacturing, automotive, and construction. Mechanical Assistants typically work under the supervision of senior staff and may also help document repairs or keep work areas organized.

What are the most commonly searched types of Mechanical jobs in Riverside, CA?

The most popular types of Mechanical jobs in Riverside, CA are:

What are popular job titles related to Mechanical Assistant jobs in Riverside, CA?

For Mechanical Assistant jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Mechanical Assistant jobs in Riverside, CA look for?

The top searched job categories for Mechanical Assistant jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Mechanical Assistant jobs?

Cities near Riverside, CA with the most Mechanical Assistant job openings:

Infographic showing various Mechanical Assistant job openings in Riverside, CA as of August 2026, with employment types broken down into 1% As Needed, 75% Full Time, 21% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $41,112 per year, or $19.8 per hour.

Full-time

Re-posted 18 hours ago


Salas O'Brien rating

8.2

Company rating: 8.2 out of 10

Based on 13 frontline employees who took The Breakroom Quiz

157th of 447 rated engineering


Job description

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 welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Team members have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Salas O’Brien has both U.S. and Canadian (PTO) plans for full-time salaried, exempt and non-team members, 10 paid holidays, and paid leave programs for military service and new parents. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $100,000 to $150,000. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

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.


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