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Senior Mechanical Engineering Jobs in Riverside, CA

Terran Orbital Corporation

Sr. Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

Reporting to the Mechanical Engineering Manager, the Sr. Mechanical Engineer will will lead or contribute to all aspects of spacecraft mechanical design, including spacecraft layout, structural and ...

Diality

Senior Mechanical Engineering Manager

Irvine, CA · On-site

$185K - $200K/yr

Diality is seeking a Senior Manager of Mechanical Engineering to lead and develop our mechanical engineering organization and provide technical leadership across the development and lifecycle of our ...

New

Terran Orbital Corporation

Sr. Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

Reporting to the Mechanical Engineering Manager, the Sr. Mechanical Engineer will will lead or contribute to all aspects of spacecraft mechanical design, including spacecraft layout, structural and ...

Terran Orbital Corporation

Sr. Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

Reporting to the Mechanical Engineering Manager, the Sr. Mechanical Engineer will will lead or contribute to all aspects of spacecraft mechanical design, including spacecraft layout, structural and ...

TRL11, Inc.

Sr. Mechanical Engineer

Irvine, CA · On-site

$401K/yr

The Senior Mechanical Engineer will work closely with cross-functional teams and customers to ... Bachelor's degree in mechanical engineering, aerospace engineering, or a related field. * At least ...

TRL11, Inc.

Sr. Mechanical Engineer

Irvine, CA · On-site

$120 - $180/hr

The Senior Mechanical Engineer will work closely with cross-functional teams and customers to ... Basic * Bachelor's degree in mechanical engineering, aerospace engineering, or a related field.

TRL11, Inc.

Sr. Mechanical Engineer

Irvine, CA · On-site

$401K/yr

The Senior Mechanical Engineer will work closely with cross-functional teams and customers to ... Bachelor's degree in mechanical engineering, aerospace engineering, or a related field. * At least ...

TRL11, Inc.

Sr. Mechanical Engineer

Irvine, CA · On-site

$401K/yr

The Senior Mechanical Engineer will work closely with cross-functional teams and customers to ... Bachelor's degree in mechanical engineering, aerospace engineering, or a related field. * At least ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

AECOM is seeking a Senior Mechanical Engineer based in Orange, California. This is a Hybrid ... Bachelor's degree in Mechanical Engineering from an ABET accredited Mechanical Engineering Program ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

AECOM is seeking a Senior Mechanical Engineer based in Orange, California. This is a Hybrid ... Bachelor's degree in Mechanical Engineering from an ABET accredited Mechanical Engineering Program ...

AECOM

Senior Mechanical Engineer

Orange, CA · On-site

$111K - $147K/yr

AECOM is seeking a Senior Mechanical Engineer based in Orange, California. This is a Hybrid ... Bachelor's degree in Mechanical Engineering from an ABET accredited Mechanical Engineering Program ...

Turion Space

Senior Mechanical Engineer

Irvine, CA

$112K - $148K/yr

Description The Senior Mechanical Engineer will play a key role in designing, developing, and ... Manage engineering projects, including defining project scope, timelines, and resources. Ensure ...

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

Senior Mechanical Engineering information

See Riverside, CA salary details

$77.7K

$127.9K

$178.4K

How much do senior mechanical engineering jobs pay per year?

As of Sep 3, 2026, the average yearly pay for senior mechanical engineering 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 is responsible for designing, developing, and overseeing the production of mechanical systems and components. They lead engineering projects, provide technical guidance to junior engineers, and ensure that designs meet safety, efficiency, and quality standards. These professionals often collaborate with other engineering disciplines, manage project timelines, and troubleshoot complex technical issues. Their work may span industries such as automotive, aerospace, manufacturing, or energy, depending on the employer.

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

As a Senior Mechanical Engineer, you will regularly work alongside teams from electrical engineering, manufacturing, quality assurance, and project management. This collaboration often involves participating in design reviews, coordinating timelines, and resolving integration challenges to ensure all components fit and function together seamlessly. Effective communication and teamwork are essential, as you'll be expected to provide technical guidance and ensure that design decisions align with broader project goals. This cross-functional interaction not only ensures the success of the project but also provides opportunities to broaden your expertise and leadership skills.

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 advanced knowledge of mechanical design, engineering principles, and problem-solving, typically backed by a bachelor's or master's degree in mechanical engineering and professional licensure (PE). Expertise in CAD software, FEA tools, and industry-standard project management systems is essential. Strong leadership, effective communication, and project management skills help you guide teams and collaborate across disciplines. These skills ensure innovative, efficient, and reliable engineering solutions while driving project success and team performance.

What is the difference between Senior Mechanical Engineering vs Mechanical Engineering?

AspectSenior Mechanical EngineeringMechanical Engineering
Required CredentialsBachelor's degree, 5+ years experience, professional engineering license often preferredBachelor's degree in mechanical engineering, entry-level to mid-level experience
Work EnvironmentDesign, development, project management, leadership roles in manufacturing, automotive, aerospaceDesign, analysis, testing, manufacturing in various industries
Employer & Industry UsageEngineering firms, manufacturing companies, R&D departmentsWide range of industries including automotive, aerospace, energy, consumer products

Senior Mechanical Engineers typically have more experience, leadership responsibilities, and advanced certifications compared to Mechanical Engineers. They focus on project oversight, complex design, and mentoring junior staff, whereas Mechanical Engineers often handle core design and analysis tasks. Both roles are essential in engineering teams, but senior roles require more expertise and industry experience.

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 are popular job titles related to Senior Mechanical Engineering jobs in Riverside, CA?

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

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

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

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

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

Senior Mechanical Engineering jobs near you
Infographic showing various Senior Mechanical Engineering job openings in Riverside, CA as of August 2026, with employment types broken down into 89% Full Time, 7% Part Time, 3% Contract, and 1% Nights. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $127,867 per year, or $61.5 per hour.

Senior Mechanical Engineering Designer

Core States Group

Ontario, CA • On-site

$40 - $58/hr

Full-time

Medical, Life, Retirement, PTO

Re-posted 25 days ago

Key responsibilities

  • Design and draft mechanical engineering projects including HVAC, plumbing/piping, refrigeration, fire protection, and fuel systems under the guidance of senior staff.

  • Coordinate with multi-disciplinary team members and assist with project approval processes.

  • Conduct site feasibility research, site visits, and generate reports or recommendations based on findings.

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.

Apply