Mechanical Engineer I Jobs in California

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Mechanical Engineer, Surface Platform

Aduril Industries

•

Costa Mesa, California, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 60+ days ago | Updated 11 hours ago

Mechanical Engineer

Flextronics

•

Milpitas, California, USA

Full-time

Job Posting Start Date 07-16-2025 Job Posting End Date 08-17-2025 Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraord
Posted 60+ days ago | Updated 11 hours ago

Sr. Mechanical Engineer, Suspension

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
Posted 60+ days ago | Updated 11 hours ago

Project Mechanical Engineer - Living

Arcadis

•

Los Angeles, California, USA

Full-time

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people, in over 70 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world's most complex challenges and deliver more impact together. Role description: Arcadis is seeking a Mechanical Engineer to join our Design & Engineering te
Posted 60+ days ago | Updated 11 hours ago

Mechanical Engineer

General Matter

•

Los Angeles, California, USA

Full-time

About the Company At General Matter, we are enriching uranium for commercial nuclear power. Today the US controls less than 1% of global enrichment capacity and depends on foreign state-backed entities for our nuclear fuel, whether LEU or HALEU. We are fixing this, and are driving down the cost of enrichment to accelerate the growth of nuclear energy. About This Role As a General Matter Mechanical Engineer, you will design, build, test, and own the mechanisms and mechanical structures enablin
Posted 60+ days ago | Updated 11 hours ago

Senior Mechanical Engineer - Transit Facilities

Arcadis

•

Los Angeles, California, USA

Full-time

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people, in over 70 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world's most complex challenges and deliver more impact together. Role description: Arcadis is seeking a Senior Mechanical Engineer to join our Design & Enginee
Posted 60+ days ago | Updated 11 hours ago

Senior Mechanical Engineer - Education, Living, Retail

Arcadis

•

Los Angeles, California, USA

Full-time

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people, in over 70 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world's most complex challenges and deliver more impact together. Role description: Arcadis is seeking a Senior Mechanical Engineer to join our Design & Enginee
Posted 60+ days ago | Updated 11 hours ago

Mechanical Engineer (New Grad)

General Matter

•

Los Angeles, California, USA

Full-time

About the Company At General Matter, we're strengthening America's capacity in nuclear energy to create a new set of possibilities, from generating clean energy at scale to forging energy security. With nuclear energy powering the next wave of American progress, we're ensuring our country has the fuel it needs for the next generation of reactors, no matter what's happening around the world. We are backed by top tier investors. Our lean, world-class team of engineers and operators is applying a
Posted 60+ days ago | Updated 11 hours ago

Power Generation and Propulsion Mechanical Engineer

Aduril Industries

•

Costa Mesa, California, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 60+ days ago | Updated 11 hours ago

Senior Mechanical Design Engineer (Hybrid-Puerto Rico)

RTX Corporation

•

Remote or Aguadilla, Aguadilla, Puerto Rico

Full-time

Date Posted: 2025-05-07 Country: United States of America Location: HPR01: Collins Puerto Rico- Aguadilla Road 110 North Km 28.8 San Antonio Industrial Park, Aguadilla, PR, 00603 USA Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required Collins Aerospace has an exciting opportunity for a Mechanical Design Engineer. We're looking for an experienced professional, like you, to accept a high level of responsibility within a
Posted 60+ days ago | Updated 11 hours ago

Mechanical Engineer (Dragon)

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. MECHANICAL ENGINEER (DRAGON) A Dragon Mechanical Engineer is responsible for the continued development of critical components and the overall structural design of the most advanced human-rated spacecraft in the world.
Posted 60+ days ago | Updated 11 hours ago

Sr. Opto-Mechanical Design Engineer (Opto-Mech camera development technical lead)

KLA

•

Milpitas, California, USA

Full-time

Company Overview KLA is a global leader in diversified electronics for the semiconductor manufacturing ecosystem. Virtually every electronic device in the world is produced using our technologies. No laptop, smartphone, wearable device, voice-controlled gadget, flexible screen, VR device or smart car would have made it into your hands without us. KLA invents systems and solutions for the manufacturing of wafers and reticles, integrated circuits, packaging, printed circuit boards and flat panel d
Posted 60+ days ago | Updated 11 hours ago

Building Mechanical Engineer

HDR, Inc.

•

Irvine, 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
Posted 60+ days ago | Updated 11 hours ago

Mechanical Engineer II - Exterior Mechanisms

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
Posted 60+ days ago | Updated 11 hours ago

Lead generator mechanical engineer

GE Vernova

•

Remote

Full-time

Job Description Summary The Lead Generator Mechanical Engineer will be responsible for the design of hydro generator mechanical components for installed based projects. He/she will also be responsible to provide technical support for supply chain and site activities related to hydro generators. Job Description About Us: We are a purpose-built company leading a new era of energy - electrifying the world while simultaneously working to help decarbonize it! Our culture is built on inclusivity, d
Posted 60+ days ago | Updated 11 hours ago

Mechanical Engineer

HDR, Inc.

•

Folsom, 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
Posted 60+ days ago | Updated 11 hours ago

Sr. Mechanical Design Release Engineer - 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
Posted 60+ days ago | Updated 11 hours ago

Principal Mechanical Engineer

ASML USA

•

San Diego, California, USA

Full-time

Introduction to the role ASML US, including its affiliates and subsidiaries, bring together the most creative minds in science and technology to develop lithography machines that are key to producing faster, cheaper, more energy-efficient microchips. We design, develop, integrate, market and service these advanced machines, which enable our customers - the world's leading chipmakers - to reduce the size and increase the functionality of their microchips, which in turn leads to smaller, more pow
Posted 60+ days ago | Updated 11 hours ago

Sr. Mechanical Engineer, Closures

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
Posted 60+ days ago | Updated 11 hours ago

Sr. Mechanical Engineer (Critical Infrastructure)

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 (CRITICAL INFRASTRUCTURE) As a member of the construction and infrastructure team, you will design, build, and activate some of the world's most technically advanced manufacturing facilities. Yo
Posted 60+ days ago | Updated 11 hours ago