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Senior Mechanical Engineer Jobs in Riverside, CA

This Opportunity WSP is currently initiating a search for a Senior Mechanical Engineer to join our Property & Buildings team in Irvine, CA . This role is ideal for a motivated engineer who brings ...

This Opportunity WSP is currently initiating a search for a Senior Mechanical Engineer to join our Property & Buildings team in Riverside, CA . This role is ideal for a motivated engineer who brings ...

This Opportunity WSP is currently initiating a search for a Senior Mechanical Engineer to join our Property & Buildings team in Riverside, CA . This role is ideal for a motivated engineer who brings ...

This Opportunity WSP is currently initiating a search for a Senior Mechanical Engineer to join our Property & Buildings team in Irvine, CA . This role is ideal for a motivated engineer who brings ...

Showing results 21-40

Senior Mechanical Engineer information

See Riverside, CA salary details

$77.7K

$127.9K

$178.4K

How much do senior mechanical engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for senior mechanical engineer in Riverside, CA is $127,867.00, according to ZipRecruiter salary data. Most workers in this role earn between $109,000.00 and $144,000.00 per year, depending on experience, location, and employer.

What does a senior mechanical engineer do?

A senior mechanical engineer manages the research and manufacturing of mechanical devices and systems. Day to day responsibilities of a senior mechanical engineer include estimating manufacturing project costs and timelines, making recommendations on system efficiencies and safety, and performing general engineering duties such as the development and testing of machines. A senior mechanical engineer job is a leadership position and requires managerial experience and excellent communication skills.

What does a senior mechanical engineer do?

A Senior Mechanical Engineer is responsible for designing, developing, and overseeing the production of mechanical systems and devices. They lead engineering projects, solve complex technical problems, and may supervise junior engineers and other team members. Their work often involves using advanced software tools for modeling and analysis, ensuring compliance with industry standards, and communicating with clients and stakeholders. Senior Mechanical Engineers typically have several years of experience and play a key role in project planning and execution.

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

To thrive as a Senior Mechanical Engineer, you need a strong background in mechanical design, engineering analysis, and project management, usually supported by a bachelor's or master's degree in mechanical engineering and several years of industry experience. Proficiency with CAD software (such as SolidWorks or AutoCAD), FEA tools, and familiarity with relevant industry standards and certifications (like PE licensure) are typically required. Excellent problem-solving, leadership, and communication skills help you lead teams and collaborate effectively with cross-functional departments. These skills and qualifications are crucial for delivering innovative, reliable engineering solutions and successfully managing complex projects.

How does a senior mechanical engineer typically collaborate with cross-functional teams during a project?

As a Senior Mechanical Engineer, you’ll regularly work alongside professionals from disciplines such as electrical engineering, manufacturing, project management, and quality assurance. Effective collaboration involves participating in design reviews, aligning on technical requirements, and troubleshooting challenges that arise during development. You’ll often serve as a key technical liaison, ensuring that mechanical solutions integrate seamlessly with other systems and that project milestones are met on schedule. Strong communication and leadership skills are invaluable, as you’ll help guide both junior engineers and multidisciplinary teams toward shared goals.

What is the difference between Senior Mechanical Engineer vs Mechanical Designer?

AspectSenior Mechanical EngineerMechanical Designer
Required CredentialsBachelor's or Master's in Mechanical Engineering, Professional Engineer (PE) license often preferredAssociate's or Bachelor's in Mechanical Engineering or related field, certifications vary
Work EnvironmentDesign, analysis, project management, often in engineering firms or manufacturingDrafting, CAD modeling, product development, typically in design departments
Employer & Industry UsageEngineering firms, manufacturing, aerospace, automotiveProduct design companies, manufacturing, engineering consultancies

While both roles involve mechanical design, Senior Mechanical Engineers focus on project oversight, analysis, and technical leadership, whereas Mechanical Designers primarily handle CAD modeling and drafting tasks. The senior role requires more advanced credentials and experience, often with broader responsibilities in project management and engineering decisions.

How much do senior mechanical engineers get paid?

Senior mechanical engineers typically earn a median annual salary ranging from $85,000 to $130,000, depending on experience, location, and industry. They often have specialized skills in CAD software, project management, and engineering design, which can influence compensation levels.

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 Senior Mechanical Engineer jobs?

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

Infographic showing various Senior Mechanical Engineer job openings in Riverside, CA as of August 2026, with employment types broken down into 84% Full Time, 13% Part Time, 1% Contract, and 2% Nights. Highlights an 95% Physical, 1% Hybrid, and 4% Remote job distribution, with an average salary of $127,867 per year, or $61.5 per hour.

Senior Mechanical Engineer - Fuel Systems

Quantum Fuel Systems LLC

Lake Forest, CA • On-site

$120K - $140K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 21 days ago


Job description

Senior Mechanical Engineer

Quantum Fuel Systems / www.qtww.com

Reports to: Senior Vice President, Product Engineering

Location: Lake Forest, CA (onsite at company headquarters)

Employment type: Full-time

FLSA: Exempt

Pay Range: $120,000.00 - $140,000.00/year

Quantum Fuel Systems is engineering the future of alternative fuel solutions. For over 25 years, we've been at the forefront of clean energy innovation, designing, developing, and delivering industry-leading storage systems and transport trailers for compressed natural gas (CNG), renewable natural gas (RNG), and hydrogen.

Based in Lake Forest, California, we're driving clean energy forward by helping our partners meet ambitious net-zero targets with safe, reliable, and sustainable solutions. Our product line includes next-generation fuel storage systems for commercial vehicles and virtual pipeline trailers that offer industry-leading capacity with advanced composite technology.

We are seeking a talented and innovative Sr. Mechanical Engineer / Fuel Systems Engineering to join our team. This role will be pivotal in the development of new products, improvement of existing designs, and support of system design activities. The ideal candidate will have a strong background in mechanical engineering, experience with alternative fuel systems or related industries, and a passion for creating cutting-edge solutions that advance safety and performance in the alternative fuel sector and gas transportation. Additionally, this role will involve preparing specifications for hydrogen and CNG vehicle and transportation components and working with internal and external customers to design and configure components for various applications. Design, develop, test, and integrate high-pressure gaseous fuel components and systems for CNG and Hydrogen automotive, truck, and virtual pipeline applications.

Requirements

  • Lead high-pressure component and system designs.
  • Generate and support design activities: DFMEA, ADVP&R, etc.
  • Evaluate, select, and qualify supplier products and services.
  • Outline and oversee or perform product verification and validation testing.
  • Support field services and failure root cause analyses.
  • Knowledge of material compatibility issues with hydrogen and natural gas.
  • Ability to apply a systematic and logical approach to engineering and design processes.
  • Perform analytic calculations, e.g., load and flow calculations.
  • Provide technical support and expertise to internal (e.g. operations, manufacturing, sales, service) and external customers.
  • Good communication skills, both verbal and written.
  • Strong documentation skills; test procedures, test reports, etc.
  • Lead and mentor Junior Mechanical Engineers.
  • Stay current with industry trends, emerging technologies, and best practices to drive continuous improvement and innovation in design processes.
  • Adopt and implement Quantum's Quality Assurance Procedures-QAP and Departmental Work Instructions-DWI.

Education and Experience:

Required:

Bachelor of Science Degree in Mechanical Engineering + 5 years’ experience. Master's degree is a plus.

Preferred:

  • Product development with high pressure components in automotive.
  • High pressure gaseous (hydrogen, CNG) system design and component selection.
  • Developing and implementing test procedures.
  • Software: CAD (NX Unigraphics preferred)
  • Large modular assemblies design
  • Strong understanding of mechanical design principles, materials selection (e.g. knowledge of material compatibility issues with hydrogen and natural gas), and manufacturing processes.
  • Knowledge of automotive industry standards and regulations related to alternative fuel systems.
  • Strong analytical and problem-solving skills, attention to detail, and ability to work in a fast-paced environment.
  • Effective communication skills and ability to collaborate with multidisciplinary teams.
  • Design for Manufacturing (DFM) concepts.
  • Familiar with control plans, FMEA, and GD&T.

Physical Job Requirements:

The employee will spend some of their time on the production floor. While performing the duties of this job, the employee may be required to stand for long periods of time, kneel, and crouch. In the office, the employee is regularly required to use their hands and fingers to operate a computer keyboard, mouse, and telephone keypad or to write, as well as talk and hear. Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to focus. This position involves occasionally lifting to 40 pounds.

EQUAL EMPLOYMENT OPPORTUNITY & AMERICANS WITH DISABILITIES ACT

Quantum Fuel Systems is an equal opportunity employer committed to fostering a diverse, inclusive, and accessible workplace. We celebrate diversity and are dedicated to creating an environment where all employees can thrive.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, breastfeeding, and related medical conditions), sexual orientation, gender identity, gender expression, national origin, ancestry, citizenship status, uniform service member and veteran status, marital status, pregnancy, age, protected medical condition, genetic information, disability, or any other characteristic protected by applicable federal, state, or local law.

In accordance with the Americans with Disabilities Act (ADA) and applicable state and local laws, Quantum Fuel Systems provides reasonable accommodations to qualified individuals with disabilities in all aspects of employment, including the application and interview process. If you require a reasonable accommodation to perform the essential functions of a job or to participate in the application process, please contact Human Resources at hr@qtww.com so that we may engage in the interactive process to identify an appropriate accommodation.

We will consider qualified applicants with criminal histories in a manner consistent with the requirements of the Los Angeles Fair Chance Ordinance and San Francisco Fair Chance Ordinance where applicable.

Benefits

Benefits - What We Offer:

    • Comprehensive Health Coverage – Choose from 2 HMO or 2 PPO medical plans, plus dental, vision, and life insurance
    • Financial Benefits – 401(k) with company match and Flexible Spending Accounts (FSA)
    • Paid Time Off – Vacation, sick leave, and company holidays