ZipRecruiter

Log In

1

Assistant Mechanical Engineering Jobs in Riverside, CA

HDR

Mechanical EIT - Building Engineering

Irvine, CA

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 ...

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 ...

Winpak Ltd

Mechanical Engineer - Intern

Rialto, CA · On-site

$22 - $25/hr

Winpak Lane is looking for a Mechanical Engineering Intern to join their team, based out of our ... * Assist with specifying equipment components or direct modification of products to ensure ...

Sulzer AG

Mechanical Design & Project Engineer

Santa Ana, CA · On-site

$79K - $107K/yr

Provide mechanical engineering support to other departments as directed by the ORE Manager. * Assist Production and field service technicians by offering mechanical support during fabrication and ...

Sulzer AG

Mechanical Design & Project Engineer

Santa Ana, CA · On-site

$79K - $107K/yr

Provide mechanical engineering support to other departments as directed by the ORE Manager. * Assist Production and field service technicians by offering mechanical support during fabrication and ...

WSP

Mechanical Engineer - Buildings

Riverside, CA

$88K - $126K/yr

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

WSP

Mechanical Engineer - Buildings

Riverside, CA · On-site

$88K - $126K/yr

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

next page

Showing results 1-20

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

Assistant Mechanical Engineering information

See Riverside, CA salary details

$13

$32

$59

How much do assistant mechanical engineering jobs pay per hour?

As of Jun 12, 2026, the average hourly pay for assistant mechanical engineering in Riverside, CA is $32.92, according to ZipRecruiter salary data. Most workers in this role earn between $21.06 and $39.62 per hour, depending on experience, location, and employer.

What engineers make $300,000 a year?

Senior mechanical engineers with extensive experience, specialized skills, and leadership roles can earn $300,000 or more annually, especially in high-demand industries like aerospace, automotive, or energy. Achieving this level often requires advanced degrees, professional certifications, and working in senior or executive positions.

What does an assistant mechanical engineer do?

An assistant mechanical engineer supports senior engineers in designing, developing, and testing mechanical systems and components. They often perform calculations, prepare technical drawings, and assist with project management using tools like CAD software, while gaining practical experience in engineering environments.

Is 40 too late to be an engineer?

Assistant Mechanical Engineering roles can be pursued at any age, as many engineers start or transition careers later in life. Success depends on acquiring relevant skills, such as proficiency in CAD software and engineering principles, and obtaining necessary certifications; age is not a barrier to entering the field.

What engineers make $500,000?

Senior mechanical engineers with extensive experience, advanced skills, and often in leadership roles or specialized industries can earn salaries approaching or exceeding $500,000 annually, especially with bonuses and stock options. High-level positions in aerospace, oil and gas, or executive engineering roles tend to have the highest compensation levels.

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 understanding of mechanical engineering principles, CAD design, and a bachelor's degree in mechanical engineering or a related field. Familiarity with industry-standard software such as AutoCAD, SolidWorks, and simulation tools, as well as knowledge of relevant codes and standards, is typically required. Strong problem-solving, teamwork, and communication skills help you collaborate effectively and adapt to project needs. These competencies are critical for ensuring accurate designs, efficient project execution, and successful integration within engineering teams.

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

AspectAssistant Mechanical EngineerMechanical Engineer
QualificationsBachelor's degree in Mechanical Engineering or related fieldBachelor's degree; often a Professional Engineer (PE) license is preferred
Work EnvironmentSupport roles in design, testing, and project assistanceLead design, analysis, and project management responsibilities
ResponsibilitiesAssist in developing plans, preparing reports, and supporting senior engineersDesign systems, oversee projects, and ensure compliance with standards

The main difference between an Assistant Mechanical Engineer and a Mechanical Engineer lies in their responsibilities and experience level. Assistant Mechanical Engineers typically support senior engineers with tasks like testing and documentation, while Mechanical Engineers take on more independent design and project leadership roles. Both roles require a similar educational background, but the Mechanical Engineer position often demands more experience and certifications.

What are some common challenges faced by Assistant Mechanical Engineers when transitioning from academic projects to real-world engineering work?

Assistant Mechanical Engineers often find that real-world engineering projects involve stricter deadlines, multidisciplinary collaboration, and more complex problem-solving than academic assignments. Adapting to industry-standard software, understanding manufacturing constraints, and effectively communicating with cross-functional teams are typical hurdles. However, most organizations provide mentorship and training to help new hires bridge the gap, and being proactive in seeking feedback and learning from experienced engineers can accelerate professional growth.
What are the most commonly searched types of Mechanical Engineering jobs in Riverside, CA? The most popular types of Mechanical Engineering jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Assistant Mechanical Engineering jobs? Cities near Riverside, CA with the most Assistant Mechanical Engineering job openings:
Assistant Mechanical Engineering jobs near you
Senior Mechanical Engineering Designer

Senior Mechanical Engineering Designer

Core States Group

Ontario, CA • On-site

$40 - $58/hr

Full-time

Medical, Life, Retirement, PTO

Posted 2 days ago

Job description

At Core States Group, the work you do matters to the clients we serve, the communities we support, and the teams who rely on one another to deliver with excellence. Our Cause is powerful: to create a world where all environments improve everyday life.


This role is paid on an hourly basis with a range of $40-$58 and is eligible for overtime in accordance with applicable laws. The expected approximate annualized compensation range is $85,000–$120,000.


Why Professionals Choose Core States Group

Here's what you can expect:

  • COMPENSATION – Competitive wages and bonus programs
  • RETIREMENT – We offer a great 401(k) match to help you invest in your future and grow your retirement savings with confidence.
  • HEALTHCARE – Excellent health benefits, life insurance options, and supplemental benefit options, giving you the flexibility to choose the coverage that best fits your needs and lifestyle.
  • VACATION – Generous PTO time to help you recharge, relax, and maintain a healthy work-life balance.
  • PERKS – Team wellness challenges, Costco membership reimbursement, half-day Fridays during summer months + much more!
  • WORK-LIFE BALANCE – A flexible work environment that supports a healthy work-life balance, whether you’re in the office, working remotely, or somewhere in between.
  • PAID PARENTAL LEAVE – Four weeks of fully paid parental leave to give you time to bond with your new addition and support your growing family.
  • TUITION REIMBURSEMENT – Advance your education with support! We offer tuition reimbursement to support your learning journey.


Summary of the role

As a Sr Mechanical Engineering Designer supporting our Architecture and Engineering business unit, you will be responsible for designing and drafting mechanical engineering projects under the guidance of Mechanical Engineers/Project Managers. The scope of design will include HVAC, plumbing/piping, refrigeration, fire protection, and fuel systems. As part of a multi-disciplined firm, you will coordinate with Site/Civil Engineers, Electrical Engineers, Structural Engineers, Architects, and Construction Project Managers. You will be responsible for the production of mechanical engineering construction documents while adhering to client requirements, code requirements, and site adjustments.


Responsibilities

  • Assist with design tasks and reports under the direction of senior staff.
  • Conduct site feasibility research and site visit investigations as well as generate reports/recommendations based on findings.
  • Assist in maintaining task budgets.
  • Coordinate and assist with addendums, RFI's and change orders.
  • Assist in coordinating the work of a multi-disciplined team throughout the design development and contract document phases of a project.
  • Assist senior staff with the project approval process.
  • Other related responsibilities as necessary to fulfill the objectives of this role.

Qualifications

We’re looking for talented professionals who are eager to grow their skills and contribute to high-quality, meaningful work. If you’re driven, collaborative, and ready to take the next step in your career, we want to hear from you. The following qualifications will help you succeed in this role:

  • Bachelor's degree in mechanical engineering
  • 4+ years of experience with general building mechanical design production, preferably with commercial projects such as retail, restaurants, grocery, financial, and/or convenience stores.
  • EIT preferred, not required.
  • Revit, AutoCAD, MS Office required

Work Location

This is a remote or hybrid (1 or 2 days a week in the office) position based out of the following Core States Group offices: Kent, Puyallup, or Bellevue, WA. We're open to a remote candidate living in Washington, Oregon, California, Arizona, or Nevada.


Company Overview

Core States Group designs, builds, and manages programs and projects across North America and has been recognized on top lists throughout the architecture, engineering, and construction (A/E/C) industry. Established in 1999, the company offers integrated solutions with seamless continuity, and many of the world’s most notable brands count on Core States Group to deliver speed to market, cost certainty, and compelling design.


With 24 offices across the United States and Canada, Core States Group is an industry powerhouse that drives innovation and improves everyday life for countless people across several markets, including Convenience, Distributed Generation, Financial, Grocery, Housing, Industrial, Restaurants, Retail, Semiconductor, Tribal, Zero-Emission Vehicle (ZEV) Infrastructure, and more. Visit us at www.core-states.com.


A Note to Candidates

Please do not be concerned if you do not meet every requirement. At Core States, we are dedicated to building a diverse and inclusive workplace, so if you are excited about this role but your experience does not align perfectly with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.


This position will remain open until it is filled.

Apply