Lead Mechanical Engineer Jobs in California

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Sr. Mechanical Engineer, Sealing

Rivian

Irvine, California, USA

Full-time

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it

Staff Mechanical Engineer R&D

Johnson & Johnson

Remote or Santa Clara, California, USA

Part-time

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn m

Principal Mechanical Engineer (Military Electronics)

Jobot

Gardena, California, USA

Full-time

Do you haver experienced with designing of rugged electro-mechanical systems form cradle to grave? If so take a closer look! This Jobot Job is hosted by: Jenner Wiggins Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $150,000 - $190,000 per year A bit about us: We are a defense technology company specializing in solid-state, software-defined directed energy systems designed to counter unmanned aircraft systems and optimize power efficiency

Sr. Mechanical Engineer - Healthcare - P2S

Legence Therma LLC

Irvine, California, USA

Full-time

P2S stands as a provider of professional engineering services to a broad range of markets, including higher education, healthcare, ports/harbors, industrial, entertainment, commercial, laboratories, municipal, and federal sectors. Our specialties include electrical, mechanical, plumbing, fire protection, and technology integration. Our offered services range from engineering and commissioning to construction management. With over 300 dedicated employees, P2S is an internationally recognized lead

Sr. Mechanical Engineer, Cockpit and Trim

Rivian

Irvine, California, USA

Full-time

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it

Staff Mechanical Engineer, Precision Motion Control

10x Genomics

Pleasanton, California, USA

Full-time

About The Role We are seeking an expert and thought leader to join our Hardware Engineering group as a Staff Mechanical Engineer. This role is focused on the mastery of precision motion control, requiring deep, hands-on expertise in control systems theory and servo tuning to achieve nano-scale resolution for our next-generation instruments. You will take on full leadership of critical projects, guiding the development of cutting-edge mechanical technologies. You will have significant influence

Staff Mechanical Engineer, Test Infrastructure

Form Energy

Berkeley, California, USA

Full-time

Are you ready to build America's energy future? Form Energy is an American manufacturing and energy technology company. We're revolutionizing energy storage with cost-effective, multi-day technology designed to keep the electric grid secure and reliable, even during extended periods of stress. By strengthening the electric system and reimagining what's possible, we're giving clean energy a whole new form! In recent years, Form Energy has earned a number of accolades, including being named by TIM

Mechanical Engineer-HVAC OR Plumbing

Jobot

San Jose, California, USA

Full-time

This Jobot Job is hosted by: Christie Bauer Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $100,000 - $180,000 per year A bit about us: We are a growing mechanical company looking for a Mechanical Engineer for our commercial projects. Why join us? Industry Leading Salaries! Extensive Benefits Package!PTOPaid Holidays Job Details Job Details: We are seeking a highly skilled, dedicated, and experienced Mechanical Engineer to join our dyn

Mechanical Engineer-HVAC OR Plumbing

Jobot

Alameda, California, USA

Full-time

This Jobot Job is hosted by: Christie Bauer Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $100,000 - $180,000 per year A bit about us: We are a growing mechanical company looking for a Mechanical Engineer for our commercial projects. Why join us? Industry Leading Salaries! Extensive Benefits Package!PTOPaid Holidays Job Details Job Details: We are seeking a highly skilled, dedicated, and experienced Mechanical Engineer to join our dyn

Principal Mechanical Engineer - Fullerton, CA (On-site)

RTX Corporation

Fullerton, California, USA

Full-time

Date Posted: 2025-07-18 Country: United States of America Location: CA531: Fullerton, CA Bldg 676 1801 West Hughes Drive Building 676, Fullerton, CA, 92834 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation

Sr. Mechanical Engineer, Consumer Hardware (Starlink)

SpaceX

Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. SR. MECHANICAL ENGINEER, CONSUMER HARDWARE (STARLINK) SpaceX is leveraging our experience in building rockets and spacecraft to deploy Starlink, the world's most advanced broadband internet system. Starlink is the worl

Sr. Mechanical Engineer - Chassis Structures

Rivian

Irvine, California, USA

Full-time

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it

Sr. Mechanical Engineer - Healthcare

Farnsworth Group, Inc.

Remote

Full-time

Join us and grow your career with a certified Great Place to Work for the last nine years running. We are a team of Engineers, Architects, Surveyors and Scientists committed to making meaningful contributions to the world around us. Our quest for excellence goes beyond the ordinary; we seek extraordinary people who want to showcase their talents and join us in making a difference for our clients and communities. You will be part of a collaborative group that champions your career and passions, e

Sr. Mechanical Engineer, User Products (Starshield)

SpaceX

Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. SR. MECHANICAL ENGINEER, USER PRODUCTS (STARSHIELD) Starshield leverages SpaceX's Starlink technology and launch capability to support national security efforts. While Starlink is designed for consumer and commercial

Senior Mechanical Engineer - Energy Solutions - CMTA

Legence Therma LLC

Los Angeles, California, USA

Full-time

CMTA, a Legence company CMTA is one of the fastest growing engineering firms in the U.S. with nationally recognized expertise in sustainable, high performance building engineering. We are a collaborative, competitive, innovative, and energetic group of engineers and team leaders who incorporate a holistic approach towards consulting engineering, performance contracting, and zero energy projects. We focus on finding engineers whose personalities lead them to excellence, and we provide exceptiona

Sr. Mechanical Engineer

Katalyst Healthcares and Lifesciences

San Jose, California, USA

Full-time

Responsibilities: Perform 3D modelling, detailing, and Mechanical design of electromechanical, power generation, and distribution products. Should have a strong knowledge of various material properties and use, fabrication methods (Sheetmetal & Machined Parts, surface coatings, finishes, adhesives, lubricants, and enclosure environmental sealing. Design and develop bus bar systems & wiring layouts for electrical distribution and power management while maintaining adherence to the applicable s

Sr Advanced Mechanical Engineer

General Dynamics

San Jose, California, USA

Full-time

Basic Qualifications Requires a Bachelor's degree in Mechanical Engineering, or a related Science, Engineering or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. CLEARANCE REQUIREMENTS: Department of Defense Top Secret security clearance is preferred at time of hire. Candidates must be able to obtain a Secret clearance within a reasonable amount of time from date of hire. Department of Defense Secret security cle

Sr. Mechanical Engineer, Hardware Simulation

Johnson & Johnson

Remote or Santa Clara, California, USA

Full-time

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn m

Senior Mechanical Engineer 1 - Nuclear

Sargent & Lundy LLC.

Remote

Full-time

Description You will be involved in nuclear power plant systems design, including preparation or review of: Modification packages for operating nuclear power plantsFunctional mechanical drawings and/or drawings for nuclear power plant systemsEngineering analyses and evaluations to support modifications and operation of plant systemsTechnical specifications and procurement documents for plant equipmentVendor bid evaluations for plant equipmentStudies and options evaluations for modifications to

Senior Mechanical Engineer

HDR, Inc.

Walnut Creek, California, USA

Full-time

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world? Watch Our Story:' ' Each and every role throughout our organization makes a difference in our ability to change the world f