Lead Mechanical Engineer Jobs in California

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Senior Launch Mechanical Engineer

Relativity Space

Long Beach, California, USA

Full-time

At Relativity Space, we're building rockets to serve today's needs and tomorrow's breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that's just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known. Joining Relativity means becoming part of something where autonomy, ownership, and impact ex

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

Sr. Mechanical Engineer, 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

Senior Mechanical Engineer, Stage Propulsion

Relativity Space

Long Beach, California, USA

Full-time

At Relativity Space, we're building rockets to serve today's needs and tomorrow's breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that's just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known. Joining Relativity means becoming part of something where autonomy, ownership, and impact ex

Senior Staff Engineer, Mechanical Simulation

Samsung Electronics America

San Jose, California, USA

Full-time

Please Note: To provide the best candidate experience amidst our high application volumes, each candidate is limited to 10 applications across all open jobs within a 6-month period. Advancing the World's Technology Together Our technology solutions power the tools you use every day--including smartphones, electric vehicles, hyperscale data centers, IoT devices, and so much more. Here, you'll have an opportunity to be part of a global leader whose innovative designs are pushing the boundaries o

Senior Mechanical Engineer 1 - Government Services

Sargent & Lundy LLC.

Remote

Full-time

Description Sargent & Lundy's Government Services Division provides cutting-edge engineering and consulting to the management and operating contractors for the US Department of Energy (DOE) and the National Nuclear Security Administration (NNSA). What does this mean? You can be a part of multi-discipline teams developing and designing facilities, systems, and equipment for the nation's major research laboratories and the legacy nuclear weapons production complex. This critical engineering work

Senior Mechanical Engineer Analyst 1 (Power Uprates) - Nuclear

Sargent & Lundy LLC.

Remote

Full-time

Description This will be a remote Mechanical Analysis position to support Power Uprates. Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the Mechanical Analysis Engineering group. You will work on major systems, equipment, and plant process in the following areas: Develop and lead licensing basis system and component evaluations for nuclear power uprate projects.This position w

Mechanical Engineer (Facilities)

LMI Government Consulting (Logistics Management In

Remote

Full-time

Overview LMI seeks an experienced mechanical engineer to provide support to a federal facilities and infrastructure portfolio management program. Join our team of collaborative self-starters focused on delivering practical and efficient solutions to help U.S. Department of Homeland Security (DHS) keep our nation safe while supporting the facilitation of legitimate trade and travel. LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and

Mechanical Engineer

Jacobs

Ridgecrest, California, USA

Full-time

Amentum is seeking an experienced Mechanical Engineer with the technical expertise to implement solutions, evaluate products, and build upon an infrastructure that supports the changing needs of our customers. In this role, the Mechanical Engineer will be responsible for preparing and/or maintaining operations documentation, procedures, and methods including user manuals and reference manuals. Provides or coordinates special documentation services as required. Competent to work at a high level o

Mechanical Engineer - Mid Level (Hybrid)

Barr Engineering

Remote or Ann Arbor, Michigan, USA

Full-time

The role - what you'll do Barr is seeking a mechanical engineer to join our team. In this hybrid role, you will support the Engineering and Design business unit, working with multidisciplinary project teams to serve industrial clients in the power generation, oil and gas, mining, and manufacturing sectors. You will use your expertise to develop and review engineering calculations, system specifications, and construction drawings; select equipment and components; and guide project execution from

Staff Mechanical Engineer - R&D Robotics

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: Opto Mechanical Engineer

Leonardo DRS

San Diego, California, USA

Full-time

DRS Daylight Solutions business provides industry-changing photonic engine technology for government and commercial markets, including defense and security, quantum information sciences, life sciences, and industrial process control. As a laser technology pioneer, Daylight Solutions has delivered more mid-IR systems to more applications world-wide than any other company. Daylight laser solutions span the full spectrum from UV to visible to NIR to mid-IR. At DRS Daylight Solutions, you will be e

Senior Fluids Mechanical Engineer

Relativity Space

Long Beach, California, USA

Full-time

At Relativity Space, we're building rockets to serve today's needs and tomorrow's breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that's just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known. Joining Relativity means becoming part of something where autonomy, ownership, and impact ex

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

Senior Mechanical Engineer: Laser Packaging Engineer

Leonardo DRS

San Diego, California, USA

Full-time

DRS Daylight Solutions business provides industry-changing photonic engine technology for government and commercial markets, including defense and security, quantum information sciences, life sciences, and industrial process control. As a laser technology pioneer, Daylight Solutions has delivered more mid-IR systems to more applications world-wide than any other company. Daylight laser solutions span the full spectrum from UV to visible to NIR to mid-IR. At DRS Daylight Solutions, you will be e

Senior Mechanical Engineer 2 - 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

Sr. Principal Thermal, Automation and Mechanical Engineer

Marvell Semiconductor Inc.

Westlake Village, California, USA

Full-time

About Marvell Marvell's semiconductor solutions are the essential building blocks of the data infrastructure that connects our world. Across enterprise, cloud and AI, automotive, and carrier architectures, our innovative technology is enabling new possibilities. At Marvell, you can affect the arc of individual lives, lift the trajectory of entire industries, and fuel the transformative potential of tomorrow. For those looking to make their mark on purposeful and enduring innovation, above and be

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

Sr. Mechanical Engineer, Flight Termination System (Starship)

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, FLIGHT TERMINATION SYSTEM (STARSHIP) As a member of the Flight Termination System team, you will have the exciting opportunity to be responsible for the design of the Starship Flight Terminati

Senior Staff Mechanical Engineer - Harness Design (San Diego)

Shield AI Inc

San Diego, California, USA

Full-time

Founded in 2015, Shield AI is a venture-backed defense technology company with the mission of protecting service members and civilians with intelligent systems. Its products include the V-BAT aircraft, Hivemind Enterprise, and the Hivemind Vision product lines. With offices in San Diego, Dallas, Washington, D.C., Boston, Abu Dhabi (UAE), Kyiv (Ukraine), and Melbourne (Australia), Shield AI's technology actively supports U.S. and allied operations worldwide. For more information, visit Follow Sh