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Assistant Mechanical Engineer Jobs in Riverside, CA

HDR

Mechanical Engineer

Irvine, CA · On-site

We bring together mechanical, electrical, structural, and civil engineering experts to solve ... Coordinate with and assist affected disciplines with addenda, RFIs, CPRs and change orders, and ...

HDR

Mechanical Engineer

Irvine, CA · On-site

We bring together mechanical, electrical, structural, and civil engineering experts to solve ... Coordinate with and assist affected disciplines with addenda, RFIs, CPRs and change orders, and ...

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, 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

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 ...

Sulzer AG

Mechanical Engineer

Orange, CA · On-site

This position is intended for engineers with practical mechanical experience who can work ... Participate in daytoday shop and field operations, including repair support * Assist with field ...

Willdan Group, Inc.

Senior Mechanical Engineer

Walnut, CA

$108K - $143K/yr

The Senior Mechanical Engineer will be responsible for managing engineering staff, supporting ... Maintain engineering standards, templates, and best practices. * Assist with project scope ...

804 Technology

Mechanical Engineer II

Irvine, CA

JOB SUMMARY The Mechanical Engineer will carry out engineering assignments concerned with the ... Works under supervision, performs assignments of medium complexity and may assist senior engineers ...

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 ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

... * Assist with mentoring of junior staff within the Mechanical Department * Review and edit ... Serves as lead engineer on mid - to large size projects. Qualifications Minimum Requirements

WSP

Mechanical Engineer - Buildings

Riverside, CA · On-site

$88K - $126K/yr

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

AECOM

Senior Mechanical Engineer

Orange, CA · Hybrid

$111K - $147K/yr

... * Assist with mentoring of junior staff within the Mechanical Department * Review and edit ... Serves as lead engineer on mid - to large size projects. Qualifications Minimum Requirements

WSP

Mechanical Engineer - Buildings

Riverside, CA · On-site

$88K - $126K/yr

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

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All JobsMechanical Engineer JobsAssistant Mechanical Engineer JobsAssistant Mechanical Engineer Jobs in Riverside, CA

Assistant Mechanical Engineer information

See Riverside, CA salary details

$34.4K

$92.6K

$140.3K

How much do assistant mechanical engineer jobs pay per year?

As of Jun 9, 2026, the average yearly pay for assistant mechanical engineer in Riverside, CA is $92,594.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,600.00 and $109,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an Assistant Mechanical Engineer, and why are they important?

To thrive as an Assistant Mechanical Engineer, you need a solid foundation in mechanical engineering principles, CAD design, and problem-solving, typically supported by a bachelor's degree in mechanical engineering or a related field. Familiarity with tools such as AutoCAD, SolidWorks, and simulation software, as well as an understanding of industry standards, is essential. Strong teamwork, communication, and attention to detail help you stand out when collaborating with engineers and other stakeholders. These skills ensure effective project execution, innovation, and the ability to support complex engineering tasks efficiently.

How does an Assistant Mechanical Engineer typically collaborate with senior engineers and other departments on projects?

Assistant Mechanical Engineers often work closely with senior engineers by assisting in the design, analysis, and testing of mechanical systems. They frequently participate in team meetings, contribute to project documentation, and coordinate with departments such as manufacturing, quality assurance, and procurement to ensure project requirements are met. This collaborative environment helps them gain valuable insights, develop technical skills, and build professional relationships that support both project success and personal career growth.

What does an Assistant Mechanical Engineer do?

An Assistant Mechanical Engineer supports senior engineers in designing, developing, and testing mechanical systems and components. Their tasks often include creating technical drawings, conducting research, preparing project documentation, and assisting with prototyping and quality control. They may also be involved in troubleshooting mechanical issues and collaborating with other engineering disciplines. This role is typically entry-level and provides valuable hands-on experience in the field of mechanical engineering.

What is the difference between Assistant Mechanical Engineer vs Mechanical Technician?

AspectAssistant Mechanical EngineerMechanical Technician
Required CredentialsBachelor's degree in Mechanical Engineering or related fieldDiploma or certification in Mechanical Technology or related field
Work EnvironmentDesign, planning, project management, and supervisionHands-on maintenance, assembly, and troubleshooting of mechanical systems
Employer & Industry UsageEngineering firms, manufacturing, constructionManufacturing plants, maintenance departments, workshops

Assistant Mechanical Engineers typically hold a bachelor's degree and focus on design, planning, and project supervision. Mechanical Technicians usually have technical diplomas and work directly on mechanical systems' maintenance and repair. Both roles are essential in the mechanical industry but differ in education, responsibilities, and work focus.

What are the most commonly searched types of Mechanical Engineer jobs in Riverside, CA? The most popular types of Mechanical Engineer jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Assistant Mechanical Engineer jobs? Cities near Riverside, CA with the most Assistant Mechanical Engineer job openings:
Assistant Mechanical Engineer jobs near you
Infographic showing various Assistant Mechanical Engineer job openings in Riverside, CA as of May 2026, with employment types broken down into 65% Full Time, 32% Part Time, 1% Temporary, and 2% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $92,594 per year, or $44.5 per hour.

Mechanical Engineer

Accord Technologies Inc.

Irvine, CA • On-site

Contractor

Posted 3 days ago

Job description

Title: Mechanical Engineer
Location:  Irvine CA
Position type: 12 monts Contract.
 
JOB SUMMARY
The Mechanical Engineer will carry out engineering assignments concerned with the planning, design and testing of mechanical equipment, systems, and processes. Works cooperatively with other departments. Supports higher level engineers for medium level complexity projects.
ESSENTIAL DUTIES & RESPONSIBILITIES
Designs mechanical equipment, systems, and processes for environmental control systems.
Performs calculations and analyses to ensure suitability of design. Solves problems related to the assembly, repair, and test of environmental control systems.
Under general supervision, performs assignments which involve responsibility for a secondary project or a part of a major project.
Defense or aerospace industry experience desired.
Experience in the development of thermal systems is a strong plus.
Experience with electrical circuits and control theory a plus.
May give directions and/or guidance to junior level engineers, designers, and drafters.
Works with colleagues in the department and in other departments. Writes reports as required.
Presents designs to peers, other engineers, and customers.
Works under supervision, performs assignments of medium complexity and may assist senior engineers with more complex assignments.
QUALIFICATIONS
Bachelor's degree (B.S.M.E) from four-year College or University.
Two to five years of experience with design, analysis, and development of industrial equipment.
SolidWorks for CAD and PDMVault,
Knowledge of applied thermodynamics and mechanical design.
Knowledge of drawing and drafting standards a plus.
Capable of carrying out assignments concerned with mechanical equipment.
Understanding of military specifications, environmental specifications, and test specifications desired.
Hands-on test and hardware experience is required.
Requires strong oral/written communication skills and must be capable of conducting effective oral presentations to customers.