1,879 Results for

Mechanical Engineering Jobs in Ontario, CA

Jobs

Irvine, CA9 days ago

$28–$33 Per Hour
Full-time
Employee

You'll have the chance to put your skills to the test, assembling a variety of testers, rack assemblies, cables and harnesses along with various other mechanical assemblies and installing and soldering components onto PCB. We work with some of the biggest names in commercial and military electronic systems, providing a fast-paced and innovative work environment where the work is never boring.

New!

Los Angeles, CA1 day ago

$135,000–$190,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Our teams support technically demanding projects across healthcare, commercial, and institutional markets, partnering closely with clients to deliver high-quality, efficient solutions.

Riverside, CA9 days ago

$115,000–$135,000 Per Year

We offer a setting where your impact is visible, your ideas are heard, and your leadership helps guide long-term growth—making it an ideal place for those seeking both responsibility and meaningful influence in a stable, essential-services business. The successful candidate will provide technical leadership, oversee engineering and maintenance functions, and implement initiatives that deliver measurable improvements in productivity, quality, cost reduction, and automation.

Tustin, CA30+ days ago

Temporary

In this role, you will assemble, build, and test a variety of electronic equipment using hand tools, fixtures, work instructions, and engineering drawings. Assemble electro- mechanical components using hand tools, fixtures, and detailed work instructions.

Irwindale, CA23 days ago

Be enrolled in formal schooling in a Mechatronics or similar Industrial Maintenance course (e.g., certification program, technical/community college) OR recently graduated from such a program or course within the last 6 months. Assist in generating and executing a preventative maintenance schedule for existing and new assets/equipment.

New!

Arcadia, CA4 days ago

$120,000–$170,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. If you are a problem solver who enjoys working on complex projects and has a passion for wire and cable design, we would love to hear from you.

Riverside, CA9 days ago

$75,000–$95,000 Per Year

We offer a setting where your impact is visible, your ideas are heard, and your leadership helps guide long-term growth—making it an ideal place for those seeking both responsibility and meaningful influence in a stable, essential-services business. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

New!

Irwindale, CA2 days ago

$100,000–$160,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. This role will focus on optimizing extrusion processes, improving product quality, troubleshooting production issues, and supporting new equipment and material development.

Anaheim, CA9 days ago

$110,000–$180,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We develop creative and effective solutions to meet our employee’s and clients’ needs, creating a culture that acknowledges achievements and encourages professional development while providing challenging project work and career Advancement.

New!

Arcadia, CA4 days ago

$130,000–$170,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Stay abreast of the latest developments in the field of flex assemblies, and leverage this knowledge to drive continuous improvement in our products and processes.

Brea, CA9 days ago

$100,000–$110,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. With advanced capabilities across silicone sealants and insulation components, our client operates from a modern California facility and serves a broad and critical customer base, while fostering innovation, craftsmanship, and continuous growth.

Los Angeles, CA9 days ago

$80,000–$100,000 Per Year

This is an excellent opportunity to use your expertise in NFPA codes, CAD Drafting, Hydraulic Calculations, Seismic Bracing, Fire Pump Layout, Commercial Fire Sprinkler systems, BIM Design, Clash Detection, HydraCAD, AutoSPRINK, and NICET to make a significant impact on our projects and help us maintain our commitment to safety and excellence. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

New!

Brea, CA3 days ago

$30–$35 Per Hour

The Mechanical Inspector is responsible for inspecting manufactured aviation components and precision-machined parts to ensure compliance with engineering, customer, and quality requirements. Kimco Staffing Services is a rapidly growing, award-winning staffing firm whose purpose is to add real value to our clients and candidates while "Changing lives, One Job at a Time."

Duarte, CA9 days ago

$60,000–$70,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You’ll work closely with engineering and production teams to identify issues, solve problems, and keep things running smoothly!

New!

Garden Grove, CA6 days ago

$50–$65 Per Hour

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. The successful candidate will be a key player in our manufacturing operations, responsible for programming, setting up, and operating CNC machines to produce precision parts.

Garden Grove, CA9 days ago

$75,000–$100,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. With a strong focus on engineering support, advanced manufacturing processes, and end-to-end production, they play a key role in helping customers bring complex, high-performance products to market.

Grand Terrace, CA19 days ago

$138,000–$152,000

PSG offers a unique combination of the both small company atmosphere: with an ownership mindset that allows you to make close-to-the-customer decisions; an innovative approach in seeing beyond what is possible today and entrepreneurial spirit in the pursuit of new opportunities; combined with benefits of a large company’s scale, tools, expertise, and financial strength with Dover. These engineering activities include timely launches of new products, qualification of component modifications and/or new suppliers for cost savings, disposition of non-conforming products and any other technical support of the products to successfully source, build and deliver products to our customers.

Los Angeles, CA9 days ago

$90,000–$220,000 Per Year

5+ years of outside B2B sales experience specifically selling natural gas generators, industrial engines, generator packages, gensets, compression-driven power systems, backup power equipment, prime power systems, rotating equipment, or related industrial/mechanical solutions. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

Long Beach, CA11 days ago

$46–$58 Per Hour
Full-time

This Includes HMI Design, PLC Design, Safety PLC Design, Hardwire Layouts, Panel Layouts, Risk Assessments, Field Device Layouts, Installation Supervision and Full Line Commissioning. As one of the world’s most admired brands, Toyota is growing and leading the future of mobility through innovative, high-quality solutions designed to enhance lives and delight those we serve.

Irvine, CA17 days ago

You'll have the chance to put your skills to the test, qualifying military products and ensuring electronic and electro-mechanical assemblies and products are properly designed to enable operation in harsh environments such as airborne, vehicle, and flight line. Responsibilities: Ensuring electronic and electro-mechanical assemblies and products are properly designed to enable operation in harsh environments such as airborne, vehicle, and flight line.

New!

Fontana, CA2 days ago

$95,000–$115,000

The Reliability Engineer supports cement plant Maintenance and Production departments with problem solving and project execution in order to reduce time, improve process and lower operating costs by effectively applying Reliability Engineering methods and predictive/preventive maintenance programs. Work closely with the Maintenance Planner, Maintenance Engineer, and Purchasing to ensure that all necessary inventories are established for spare parts and most common repair parts for critical equipment.

New!

Santa Ana, CA3 days ago

$152,506–$165,000 Per Year
Full-time

Requires a Bachelor’s degree or foreign equivalent in Mechanical Engineering, Robotics Engineering or a related field, and at least 6 years of experience in Precision Mechanical Engineering Design or a related occupation. Senior Engineer I, WB Mechanical (Kulicke & Soffa Industries)(Santa Ana, CA): Analyze, design, and test electro-mechanical systems for high-performance multi-axis robotic semiconductor manufacturing and process equipment.

Long Beach, CA30+ days ago

$74,652–$158,688 Per Year

CSULB is committed to serving diverse students and has established and actively supports the Black Excellence Collegium, dedicated to promoting Black excellence and advancing Black Student Success, and El Concilio for Latinx Success at the Beach, whose mission is to build capacity and promote inclusive servingness across initiatives and efforts for the benefit of all students. CSULB seeks to recruit faculty who enthusiastically support the University's strong commitment to the academic success of all our students, including students of color, students with disabilities, students who are first generation to college, veterans, students with diverse socio-economic backgrounds, and students of diverse sexual orientations and gender expressions.

Ontario, CA30+ days ago

Summary of Position: As the Director of Mechanical Engineering, supporting our Architecture and Engineering business unit, you are responsible for leading, coordinating and overseeing all activities, projects and personnel within the mechanical engineering discipline. 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.

Costa Mesa, CA15 days ago

$166,000–$220,000 Per Year

As the world enters an era of strategic competition, Anduril is committed to bringing cutting-edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.

Irvine, CA30+ days ago

The ideal candidate will be responsible for designing, developing, implementing, and supporting test solutions for manufacturing and operational processes. This includes automated test systems, diagnostics, calibration, and verification tools to ensure the quality and reliability of products during production.

Irvine, California9 days ago

The Mechanical Engineering Manager maintains a high-performing engineering team through manpower management, team development, recruiting, and hiring while proactively collaborating with functional and business leadership teams to support business and program requirements. Terran Orbital provides end-to-end satellite solutions by combining satellite design, production, launch planning, mission operations, and on-orbit support to meet the needs of the most demanding military, civil, and commercial customers.

Pomona, CA30+ days ago

$5,507–$6,677

The College offers 12 ABET-accredited undergraduate degrees and 7 master's degrees to over 7,100 students across seven academic departments that include: Aerospace Engineering, Chemical and Materials Engineering, Civil Engineering, Electrical and Computer Engineering, Electromechanical Engineering Technology, Industrial and Manufacturing Engineering, and Mechanical Engineering. Teach assigned division courses in the department's curriculum; hold weekly office hours commensurate with the assigned teaching unit load; and respond to student inquiries related to course registration, homework assignments, exam preparation, and grading.

Irvine, CA30+ days ago

$140,000–$220,000 Per Year

Brea, CA7 days ago

$24–$35

This role works closely with engineers and cross-functional teams to perform routine technical tasks, collect and analyze test data, support laboratory operations, and contribute to the development of medical devices and related technologies in a regulated environment. The Mechanical Engineering Technician II supports Product Development and R&D activities by executing laboratory testing, prototype development, equipment qualification, and technical documentation.

Fullerton, CA30+ days ago

$6,608.40–$7,465.20

As part of the Titan Community, you have access to many campus facilities and services including but not limited to the Grand Central Art Center in Santa Ana, CSUF Garden Grove Center, Fullerton Arboretum, cultural events and performances in the Clayes Performing Arts Center, Cal State Fullerton Athletics sports events, Titan Recreation Center, and the Employee Wellness Program. In accordance with the California State University (CSU) Out-of-State Employment Policy, the CSU is a state entity whose business operations reside within the State of California and requires hiring employees to perform CSU related work within the State of California.

Brea, CA30+ days ago

Requirements: Minimum education requirement is high school diploma, experience in a lab environment (corporate or school) or technician experience in a regulated environment for a minimum of 8 years, experience following written procedures and working collaboratively with a team. Bachelor of Science in a technical area and at least 2-4 year of experience in a laboratory/R&D setting following written procedures and working collaboratively with a team.

Brea, CA30+ days ago

Preferred requirement: Bachelor of Science in a technical area and at least 1 year of experience in a laboratory/R&D setting following written procedures and working collaboratively with a team. Minimum education requirement is high school diploma, experience in a lab environment (corporate or school) or technician experience in a regulated environment for a minimum of 6 years.

Brea, CA30+ days ago

Irvine, CA17 days ago

Nikkiso ACD is an engineering and manufacturing company specializing in machinery designed to operate at cryogenic temperatures as low as - 420 degrees Fahrenheit, the boiling point of Liquid hydrogen. Nikkiso Clean Energy & Industrial Gases is a leading provider of cryogenic pumps heat exchangers process systems services and solutions for the LNG and industrial gases industry.

Los Angeles, CA30+ days ago

Remote

$200,000–$260,000 Per Year

Professional Engineer License (P.E.) is required + Direct experience supporting data center projects **Preferred Qualifications:** + Experience working with hyperscale or colocation clients + Experience managing large multi-disciplinary design teams + Experience with Design-Bid-Build and Design-Build delivery models **Additional Information** + Relocation is not available for this role. **Qualifications** **Minimum Qualifications:** + Bachelor’s degree in Mechanical Engineering plus twelve (12) years of relevant experience in mechanical design and/or mechanical engineering, with a focus on data center infrastructure, or demonstrated equivalency of experience and/or education, including 4 years of leadership experience.

Irvine, CA30+ days ago

A focus on experience and relationships in the A/E industry to contribute to the overall strategic and tactical leadership of the Stantec Health Sector engineering discipline, building and leading the health sector engineering practice in the Los Angeles area. Interface regularly with additional architectural, mechanical engineering and electrical engineering leaders in US West and across North America to thrive and contribute within the integrated design practice.

Irvine, CA22 days ago

$19–$21 Per Hour

NV5 is a provider of engineering and consulting services to public and private sector clients, delivering solutions through six business verticals: Testing, Inspection & Consulting; Infrastructure; Utility Services; Environmental Health Sciences; Buildings & Program Management; and Geospatial Technology. As engineers, architects, construction/program managers, environmental professionals and beyond, we play a significant role in shaping our communities through the services we provide.

Pasadena, CA9 days ago

We've built a unique platform that connects researchers and companies with a global pool of participants, enabling the collection of high-quality, ethically sourced human behavioural data and feedback. We believe that the next leap in AI capabilities won't come solely from scaling existing models, but from integrating diverse human perspectives and behaviours into AI development.

Irvine, CA30+ days ago

Job Category*Select a FunctionHealth Economics & Outcomes ResearchProfessional Services GroupBusiness Development - M&A GroupLaw GroupGeneral Management GroupCommunications & Public RelationsRegulatory AffairsResearch & DevelopmentMedical / Clinical AffairsShared Service Management & Business ProcessAdministrative Services & TransportationEnvironmental, Health, Safety & SustainabilityCustomer ServiceProcurement GroupHuman ResourcesSoftware EngineeringProject ManagementFinanceInformation TechnologyQualitySupply ChainMarketingSales SupportEngineeringSalesOperations. BD and its affiliates and subsidiaries (BD) do not accept any liability for fees for resumes from recruiters or employment agencies ("Agency"), without a binding, written recruitment agreement between BD and Agency describing the services and specific job openings ("Agreement").

Brea, CA30+ days ago

Minimum education requirement is high school diploma, experience in a lab environment (corporate or school) or technician experience in a regulated environment for a minimum of 8 years, experience following written procedures and working collaboratively with a team. Bachelor of Science in a technical area and at least 2-4 year of experience in a laboratory/R&D setting following written procedures and working collaboratively with a team.

Brea, CA30+ days ago

Los Angeles, CA9 days ago

and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing (CDL drivers only), vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Required for Certain Job Profiles: Drivers who operate Commercial Motor Vehicles with a Gross Vehicle Weight (GVW), Gross Vehicle Weight Rating (GVWR) or combination of power unit and trailer that meets or exceeds 10,001 lbs.

Los Angeles, CA9 days ago

$24.76–$32.22 Per Hour

WSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location. WSP USA hosts hundreds of internships across the United States to gain hands-on, meaningful work experience to enhance their education and professional aptitude.

La Palma, CA30+ days ago

Marathon Pipe Line Company (MPL) - MPL operates pipeline systems that move crude oil from production fields, other pipeline companies, and offshore platforms to MPC refineries, other refineries, and other pipeline systems. Other responsibilities may include: • Development of project scope • Engineering oversight • Technical design • Cost estimating • Schedule development • Evaluating and summarizing bid sets • Construction supervision • Safety leadership • Coordination with operations groups • Project documentation.

Los Angeles, CA9 days ago

Los Angeles, CA30+ days ago

Remote

$200,000–$240,000 Per Year

JOB SUMMARY: + Act as the primary point of contact for clients, responding to their inquiries and concerns in a timely and professional manner + Develop and maintain strong relationships with clients, regularly communicating with them to understand their needs and expectations + Coordinating with multiple disciplines and acting as lead mechanical engineer to ensure that projects are delivered within budget and on schedule while managing the mechanical team including HVAC, fire protection, plumbing + Develop detailed specifications for mechanical equipment, including pumps, fans, and air handling units. **Job Description** **AECOM** is seeking a **Senior Mechanical Engineer** with experience on **Hyperscale Data Center projects** to act as Data Center Mechanical Engineer Lead **.** The job incumbent will be responsible for designing and overseeing the construction of mechanical systems for hyperscale data centers, including HVAC, piping and fire suppression systems.

Los Angeles, California9 days ago

Backed by $450M from leading investors including Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, Alpine Space Ventures, and others – with an additional $500M in signed contracts across commercial and US government customers – we’re mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space. Engineered to survive the harshest radiation environments and to fully capitalize on today’s and tomorrow’s massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits.

Los Angeles, CA30+ days ago

$38–$48 Per Hour

Backed by $450M from leading investors including Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, Alpine Space Ventures, and others - with an additional $500M in signed contracts across commercial and US government customers - we're mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space. Engineered to survive the harshest radiation environments and to fully capitalize on today's and tomorrow's massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits.

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Mechanical Engineering Jobs in Ontario, CA

Electro-Mechanical Assembler Marvin Test Solutions, Inc.

Mechanical Project Manager Jobot

Manufacturing Engineering Manager Jobot

Electro Mechanical Assembler Kinetic Personnel Group

Engineering & Maintenance Intern Davis Wire Corporation

Wire Engineer Jobot

Product Development Engineer Jobot

Rubber Process Engineer Jobot

Data Center Controls Engineer Jobot

Engineer- Flex Assemblies Jobot

Manufacturing Engineer Jobot

Fire Sprinkler Design Engineer Jobot

Mechanical Inspector Kimco Staffing

Quality Engineer Jobot

CNC Programmer (relocation provided) Jobot

Planner/Scheduler Jobot

Engineering Manager PSG

Sales Representative - Power Generation Jobot

Controls Engineer Tecknomic LLC

Reliability Engineer – MB2023 Marvin Test Solutions

Reliability Engineer CalPortland

Senior Engineer I, WB Mechanical Kulicke & Soffa Industries

Assistant Professor of Mechanical and Aerospace Engineering (Space Systems Engineering) California State University

Director of Mechanical Engineering Core States Group

Senior Manager, Battery Mechanical Engineering Anduril Industries Inc

Test/NPI engineer with a strong mechanical engineering background Karwell Technologies

Mechanical Engineering Manager Terran Orbital Corporation

Lecturer AY - Mechanical Engineering California State University

Mechanical Engineering Manager Terran Orbital Corp

Mechanical Engineering Technician/ R&D Technician Intellectt INC

Mechanical Engineering - Part-Time Lecturer Pool California State University

Tech 3, Mechanical Engineering Karwell Technologies

Tech 2, Mechanical Engineering Karwell Technologies

Tech 1, Mechanical Engineering Karwell Technologies

Mechanical Engineering Summer Intern Cryogenic Industries Inc

Mechanical Engineering Director, Data Centers - Remote (U.S.) AECOM

Principal, Healthcare Mechanical Engineering - Los Angeles, CA Stantec Inc

Intern - Mechanical/Plumbing Engineering NV5

Mechanical Engineering Experts - PhD - AI Training - US Prolific Academic Ltd

Sr. Engineer, R&D - Mechanical Engineering Becton Dickinson and Co

Tech 2, Mechanical Engineering Katalyst Healthcares & Life Sciences

Tech 3, Mechanical Engineering Katalyst Healthcares & Life Sciences

Tech 1, Mechanical Engineering Katalyst Healthcares & Life Sciences

Spring 2027 Structural & Mechanical Engineering Internship - Undergraduate Blue Origin Enterprises LP

Mechanical Engineering Intern - Summer 2026 WSP Global Inc

Intern/Co-op - Midstream Logistics and Storage Mechanical/Civil/Electrical Engineering (Spring 2027) Marathon Petroleum Corp

Spring 2027 Structural & Mechanical Systems Engineering Internship - Graduate Blue Origin Enterprises LP

Mechanical Engineering Lead, Data Centers - Remote (U.S.) AECOM

Senior Electro-Mechanical Engineering Technician K2 Space

Senior Electro-Mechanical Engineering Technician K2 Space Corp

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