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Mechanical Engineer Job Jobs in California (NOW HIRING)

Mechanical Engineer

Irvine, CA · On-site

$50 - $56/hr

Mechanical Engineer Location: Onsite - Irvine, CA Shift: 1st Shift US Citizenship Required About the Role We are seeking a Mechanical Engineer I to support the design, analysis, and development of ...

Mechanical Engineer

Menlo Park, CA · On-site

$110 - $180/hr

Pragmatic Optimism Excellence without Ego Proactive Collaboration About the Role Mainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or ...

Mechanical Engineer

Costa Mesa, CA · On-site

$70 - $90/hr

In this supporting role, the Mechanical Engineer will help interpret requirements and perform detailed design activities related to avionics and defense display assemblies. Responsibilities include ...

Mechanical Engineer

Menlo Park, CA · On-site

$119K - $140K/yr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

Mechanical Engineer

Menlo Park, CA · On-site

$119K - $140K/yr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

Mechanical Engineer

Menlo Park, CA · On-site

$119 - $140/hr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

Mechanical Engineer

Menlo Park, CA · On-site

$119K - $140K/yr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

Mechanical Engineer

Bodega Bay, CA · On-site

$130K - $170K/yr

Mechanical Engineer About the Opportunity One of our clients specializes in HVAC, Electrical, Plumbing, and Fire Protection Design , along with Construction Administration services for commercial ...

Mechanical Engineer Parallel Systems is building autonomous, battery-electric rail vehicles to modernize freight transportation. We are seeking a Mechanical Engineer to help design and build the next ...

Mechanical Engineer

Santa Paula, CA · On-site

$100K - $140K/yr

POSITION SUMMARY The Mechanical Engineer is responsible for the design, analysis, development, testing, certification support, and continuous improvement of BendPak automotive service equipment ...

Fulltime Mechanical Engineer - Turbomachinery Must Have Technical/Functional Skills * Mechanical assembly experience * Strong understanding of manufacturing processes * Design of mechanical ...

Fulltime Mechanical Engineer - Turbomachinery Must Have Technical/Functional Skills * Mechanical assembly experience * Strong understanding of manufacturing processes * Design of mechanical ...

$100 - $140/hr

POSITION SUMMARY The Mechanical Engineer is responsible for the design, analysis, development, testing, certification support, and continuous improvement of BendPak automotive service equipment ...

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Showing results 1-20

Mechanical Engineer Job information

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

AspectMechanical Engineer JobMechanical Designer
Required CredentialsBachelor's in Mechanical Engineering, PE license (optional)Associate's or Bachelor's in Mechanical Design or related field
Work EnvironmentDesign, analysis, testing, and project management in various industriesCreating detailed CAD models and drawings for manufacturing
Employer & Industry UsageEngineering firms, manufacturing, aerospace, automotiveProduct design companies, manufacturing firms, R&D

Mechanical Engineers focus on designing, analyzing, and testing mechanical systems, often overseeing projects from concept to completion. Mechanical Designers primarily create detailed CAD models and drawings to guide manufacturing. While both roles require technical skills, Mechanical Engineers typically have broader responsibilities including analysis and project management, whereas Mechanical Designers specialize in detailed design work.

What cities in California are hiring for Mechanical Engineer Job jobs?

Cities in California with the most Mechanical Engineer Job job openings:

Infographic showing various Mechanical Engineer Job job openings in California as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 18% Part Time, and 5% Contract. Highlights an 95% Physical, 1% Hybrid, and 4% Remote job distribution.

Mechanical Engineer

Pan-Pacific Mechanical

Fountain Valley, CA • On-site

$120K - $150K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 6 days ago


Job description

Join the top full-mechanical contractor in the West — now expanding nationwide.

We deliver innovative, industry-changing commercial and healthcare projects and foster a culture that is truly unmatched. We offer excellent benefits, including employee ownership, 401k matching, and internal growth opportunities. Apply today for immediate consideration!

We are seeking a Mid-Level to Senior Mechanical Engineer to join our growing team. If you’re passionate about HVAC design, thrive in a collaborative design-build environment, and want exposure to everything from commercial packaged systems to complex central plants and laboratory exhaust systems — we want to connect.

This position plays a key role in the HVAC design-build process — from concept development through construction coordination. You’ll collaborate with fellow engineers, preconstruction executives, project managers, and field teams to deliver safe, energy-efficient, and constructible mechanical systems across diverse commercial sectors including healthcare, high-rise, entertainment, transportation, biotech, laboratories, and more.

Qualifications

  • 5+ years of experience in HVAC design for commercial projects
  • Bachelor’s degree in Mechanical Engineering; PE license strongly preferred
  • Experience with vertical market segments noted above
  • Notable experience with complex HVAC systems including custom air handling units, hydronic systems such as chilled and heating hot water, DDC controls, and central plants
  • Proficiency in Revit MEP
  • Experience with load and energy modeling software (Trace, HAP, eQuest, EnergyPro, EnergyPlus, etc.)
  • Must be able to communicate in a professional manner, be able to work with various personalities and work styles, and be a collaborative team-player aligned with our core values of Family, Loyalty, and Respect
  • Proven ability to meet fast deadlines, and prioritize tasks.

No third-party candidates will be accepted. This job description is not intended to detail every responsibility but to provide a general overview. As the nature of business demands change, so may the essential functions of this position. Salary range reflects total compensation. We are unable to offer work sponsorship for this position.