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Mechanical Assistant Jobs in Riverside, CA (NOW HIRING)

Umec-CA

Mechanical Project Engineer

Anaheim, CA · On-site

$67 - $90/hr

Job Summary University Mechanical & Engineering Contractors, Inc. is currently seeking individuals ... Prepare Project Progress Billings * Assist in Technical Analysis, Trouble shooting, and problem ...

Salas O'Brien, Inc.

Mechanical Engineer

Irvine, CA · Hybrid

$80K - $110K/yr

Mechanical Engineer Summary The Mechanical Engineer serves to focus on the design of mechanical ... Lead project teams and serve as the primary contact for clients * Assist in the procurement of new ...

Salas O'Brien, Inc.

Mechanical Engineer

Corona, CA · Hybrid

$80K - $110K/yr

Mechanical Engineer Summary The Mechanical Engineer serves to focus on the design of mechanical ... Lead project teams and serve as the primary contact for clients * Assist in the procurement of new ...

Salas O'Brien

Mechanical Engineer

Irvine, CA · On-site

$80K - $110K/yr

Mechanical Engineer Summary The Mechanical Engineer serves to focus on the design of mechanical ... Lead project teams and serve as the primary contact for clients * Assist in the procurement of new ...

Belcan

Mechanical Engineer II

Irvine, CA · On-site

$40.01 - $64.90/hr

Mechanical Engineer II Pay Rate: $40.01 - $64.9/hr. Location: Irvine, CA Area Code: 949, 714 ZIP ... Works under supervision, performs assignments of medium complexity and may assist senior engineers ...

Multiquip

Mechanical Assembler l

San Bernardino, CA · On-site

$20 - $22/hr

Mechanical Assembler I - Power Equipment FullTime NonExempt OnSite (San Bernardino, CA) Monday ... * Assist with inventory monitoring and production needs. * Maintain a safe, clean, and organized ...

Multiquip, Inc.

Mechanical Assembler l

San Bernardino, CA · On-site

$20 - $22/hr

Mechanical Assembler I - Power Equipment Full-Time Non-Exempt On-Site (San Bernardino, CA) Monday ... * Assist with inventory monitoring and production needs. * Maintain a safe, clean, and organized ...

WSP

Mechanical Engineer - Buildings

Riverside, CA · On-site

$89 - $127/hr

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

Multiquip

Mechanical Assembler l

San Bernardino, CA · On-site

$20 - $22/hr

Mechanical Assembler I - Power Equipment Full‑Time * Non‑Exempt * On‑Site (San Bernardino, CA ... * Assist with inventory monitoring and production needs. * Maintain a safe, clean, and organized ...

Multiquip

Mechanical Assembler l

San Bernardino, CA · On-site

$20 - $22/hr

Mechanical Assembler I - Power Equipment Full-Time • Non-Exempt • On-Site (San Bernardino, CA ... * Assist with inventory monitoring and production needs. * Maintain a safe, clean, and organized ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

... * Assist with mentoring of junior staff within the Mechanical Department * Review and edit ... specifications * Interact and work with a diverse set of clients and subcontractors * Serves as ...

Multiquip, Inc.

Mechanical Assembler l

San Bernardino, CA · On-site

$20 - $22/hr

Mechanical Assembler I - Power Equipment Full-Time • Non-Exempt • On-Site (San Bernardino, CA ... * Assist with inventory monitoring and production needs. * Maintain a safe, clean, and organized ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

... * Assist with mentoring of junior staff within the Mechanical Department * Review and edit ... specifications * Interact and work with a diverse set of clients and subcontractors * Serves as ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

... * Assist with mentoring of junior staff within the Mechanical Department * Review and edit ... specifications * Interact and work with a diverse set of clients and subcontractors * Serves as ...

HDR

Mechanical EIT - Building Engineering

Irvine, CA · On-site

Work independently on small projects, or assist more-senior engineers on larger projects * Supervise work of Mechanical CAD Technicians, and coordinate design of assigned projects with architectural ...

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All JobsMechanical JobsMechanical Assistant JobsMechanical Assistant Jobs in Riverside, CA

Mechanical Assistant information

See Riverside, CA salary details

$9

$19

$30

How much do mechanical assistant jobs pay per hour?

As of Sep 6, 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 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 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 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 most commonly searched types of Mechanical jobs in Riverside, CA?

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

Mechanical Assistant jobs near you
Infographic showing various Mechanical Assistant job openings in Riverside, CA as of August 2026, with employment types broken down into 2% As Needed, 75% Full Time, 20% 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.

Mechanical Project Engineer

Umec-CA

Anaheim, CA • On-site

$67 - $90/hr

Other

Medical, Dental, Vision, Life, Retirement

Posted 5 days ago

Key responsibilities

  • Manage flow of contractor provided submittal data and prepare submittal packages.

  • Assist in project estimating, scheduling, and technical analysis related to HVAC and mechanical systems.

  • Prepare project progress billings and support in troubleshooting HVAC equipment and systems.

Job description

About Us

We are one of Southern California’s leading value-added mechanical contractors. With a focus on client requirements, we offer BIM capabilities, design-build services, sustainable solutions, commercial HVAC systems, and complex mechanical and industrial system installations.

Job Summary

University Mechanical & Engineering Contractors, Inc. is currently seeking individuals for a full-time position as a Mechanical Project Engineer located in our Anaheim, CA area. Backed by the strength and stability that comes with almost a century of customer care and ownership, UMEC adheres to the highest safety standards for its employees and clients. UMEC offers industry-leading building information modeling (BIM) capabilities, design/build services, sustainable solutions, commercial HVAC services, and complex mechanical and industrial system installations.

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#LI-Onsite

Essential Duties & Responsibilities

Responsibilities

  • Project Estimating (Take-Off & Analysis)
  • Project Scheduling (Manpower scheduling)
  • Manage RFIs (Requests for Information)
  • Prepare Submittal Packages
  • Manage Flow of Contractor provided submittal data
  • Assist in data population of forms
  • Prepare Project Progress Billings
  • Assist in Technical Analysis, Trouble shooting, and problem solving of HVAC Air Equipment, HVAC Piping Equipment Systems, HVAC & Plumbing Equipment

Preferred Skills and Experience:

Recommended that the candidate have a bachelor’s degree in Mechanical Engineering and 3 years industry experience as a Construction Project Engineer.

  • Basic working knowledge HVAC & Plumbing Design & System Operation
  • Basic working knowledge of Commercial & Industrial construction sequences
  • Basic working knowledge of construction estimating
  • Basic working knowledge of testing procedures for HVAC systems.
  • Basic working knowledge of ASHRAE data & guidelines
  • Average proficiency with MS Project scheduling program
  • Average proficiency with MS Access or other database programs
  • Above average proficiency with MS Excel & Word
  • Above average proficiency with Internet
  • Above average verbal & writing skills
  • Above average organizational skills in handling & archiving technical data

Candidate should be able to demonstrate experience with project administration, project scheduling, productivity analysis, project cost control accounting, plus equipment & material procurement.

Equal Opportunity Employer

As a leading provider of mechanical and electrical construction, facilities services, and energy infrastructure, we offer employees a competitive salary and benefits package and we are always looking for individuals with the talent and skills required to contribute to our continued growth and success. Equal Opportunity Employer/Veterans/Disabled

Affirmative Action Policy

Please review our Affi

Geographic Disclosure

We are committed to providing employees a comprehensive benefits package which includes medical, dental, and vision coverage, along with health savings and flexible spending accounts, life insurance, disability, a 401(k) Savings Plan, College Coach and employee assistance program.

Compensation Range: $66,560 to $90,000.

We offer our employees a competitive salary and competitive benefits package and are always looking for individuals with the talent and skills required to contribute to our continued growth and success. Equal Opportunity Employer/Veterans/Disabled

Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable state and local law, including the Los Angeles County Fair Chance Ordinance.

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