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Nov 13, 2026
Full time
Senior Mechanical Engineer (Onsite)
Raytheon Collins Aerospace El Segundo, CA
Date Posted: 2026-11-12 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type: Onsite What You Will Do The MANTIS SEIT/HW Department is currently seeking a Senior Mechanical Engineer for the MANTIS HW Section in El Segundo, CA. The person in this position will be involved in electronics packaging design for GPS Receivers. Tasks will include: Mechanical engineering throughout the hardware life cycle, including concept development, preliminary and detail design, transition to production, production support and installation. Design and development of GPS receivers  Typical technologies include high density printed wiring board assemblies, electronic enclosures, thermal heat exchangers, machined components, RF microwave assemblies, and power converter units, all with Challenging design constraints including Size, Weight, Power, and design to Cost What You Will Learn...
Oct 27, 2026
Full time
Senior Mechanical Engineer II
$132,000 - $233,275 yearly
ROCKETLAB Pasadena, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.   Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the...
Oct 27, 2026
Full time
Senior Mechanical Engineer II
$132,000 - $255,000 yearly
ROCKETLAB Pasadena, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.   Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the...
Oct 27, 2026
Full time
Senior Mechanical Engineer I
$115,200 - $179,675 yearly
ROCKETLAB Pasadena, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.   Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the...
Oct 26, 2026
Full time
Senior Mechanical Engineer
$130,500 - $228,375 yearly
General Atomics Aeronautical Systems, Inc. San Diego, CA
General Atomics Electromagnetic Systems (GA-EMS) designs and manufactures first-of-a-kind electromagnetic and electric power generation systems. GA-EMS' expanding portfolio of specialized products and integrated system solutions support critical fleet, space systems and satellites, missile defense, power and energy, and process and monitoring applications for defense, industrial, and commercial customers worldwide. We are seeking a Senior Mechanical Engineer to join our Aircraft Launch and Recovery Equipment (ALRE) sustainment team, supporting advanced aircraft carrier systems. This senior technical role focuses on fielded aerospace/defense systems, especially energy absorption systems used to safely decelerate aircraft in demanding maritime environments. You will lead mechanical sustainment and design-for-manufacturing efforts, perform advanced analysis (structural, thermal, shock/vibration, tolerance, corrosion), ensure compliance with maritime MIL-STD requirements,...
Oct 14, 2026
Full time
Senior Mechanical Engineer
$130,500 - $228,375 yearly
General Atomics Aeronautical Systems, Inc. San Diego, CA
General Atomics Electromagnetic Systems (GA-EMS) designs and manufactures first-of-a-kind electromagnetic and electric power generation systems. GA-EMS' expanding portfolio of specialized products and integrated system solutions to support critical fleet, space systems and satellites, missile defense, power and energy, and process and monitoring applications for defense, industrial, and commercial customers worldwide. We have an exciting opportunity for a senior Mechanical Engineer experienced in design and integration in Rancho Bernardo, CA.  The ideal candidate would be an experienced mechanical engineer that can lead a system from concept through testing and platform integration by reviewing top level requirements, creating 3D models, reviewing/conducting analysis, leading design reviews, producing and reviewing drawings for fabrication, creating inspection plans, installing systems in the lab or military platform, and performing validation testing. The candidate...
Nov 13, 2026
Full time
Senior Associate, Mechanical Engineer
$76,000 - $141,000 yearly
L3Harris Carlsbad, CA
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Senior Associate, Mechanical Engineer Job Code: 47766 Job Location: Carlsbad, CA Job Schedule: 9/80: Employees work 9 out of every 14 days- totaling 80 hours worked- and have every other Friday off       Job...
Nov 02, 2026
Full time
Senior Mechanical Development & Test Engineer I
$124,000 - $186,000 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Nov 02, 2026
Full time
Senior Spacecraft Mechanical Engineer II
$141,800 - $236,200 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Nov 02, 2026
Full time
Senior Spacecraft Mechanical Engineer I
$124,000 - $186,000 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Nov 02, 2026
Full time
Senior Mechanical Development & Test Engineer II
$141,800 - $236,200 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Oct 27, 2026
Full time
Senior Spacecraft Mechanical Engineer II
$132,000 - $255,275 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Oct 27, 2026
Full time
Senior Spacecraft Mechanical Engineer I
$115,200 - $194,075 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Oct 27, 2026
Full time
Senior Mechanical Development & Test Engineer II
$132,000 - $255,275 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Oct 27, 2026
Full time
Senior Mechanical Development & Test Engineer I
$115,200 - $194,075 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SPACE SYSTEMS At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more. Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners...
Oct 27, 2026
Full time
Supplier Quality Engineer (I, II, Senior I, Senior II) - Mechanical
$70,000 - $228,500 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. NEUTRON   Neutron is a medium lift launch vehicle capable of delivering the mega constellations of tomorrow, high assurance payloads, and human spaceflight. As a highly reusable launch platform, Neutron will deliver a highly cost-effective and reliable launch solution leveraging Rocket Lab’s proven execution history with the Electron program. If you’re interested in joining a high performing team, pushing the boundaries with a clean sheet development of re-usable liquid launch vehicle, this is your opportunity!  SUPPLIER QUALITY ENGINEER (I, II, SENIOR I, SENIOR II)- MECHANICAL Based out of Rocket Lab's headquarters in Long Beach,...
Oct 27, 2026
Full time
Senior Supplier Development Engineer I/II – Mechanical
$102,400 - $228,875 yearly
ROCKETLAB Long Beach, CA
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. SUPPLY CHAIN   Rocket Lab’s Supply Chain team is responsible for the flow of all materials, products, and components through the business. With many of our own products functioning as critical components to our own and our customers’ missions, the Supply Chain team has a direct impact on the success of our rocket and satellite programs. They set up the assembly kits that enables our technicians to put together our Electron rockets, manage inventory, look after shipping and receiving, manage direct and indirect procurement, and inspect and ensure that all of our materials and products are compliant and up to standard. They are the chain that...
Oct 23, 2026
Full time
Senior Specialist, Mechanical Engineer Design
$102,000 - $189,000 yearly
L3Harris Sacramento, CA
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Senior Specialist,  Mechanical Engineer – Design Job Code: 45652 Job Location: Huntsville, AL or Sacramento, CA; On-site Job Schedule:  9/80: Employees work 9 out of every 14 days- totaling 80 hours worked- and have every...
Oct 14, 2026
Full time
Senior Lead Engineer, Nuclear & Mechanical Systems
$130,500 - $228,375 yearly
General Atomics Aeronautical Systems, Inc. San Diego, CA
General Atomics Electromagnetic Systems (GA-EMS) designs and manufactures first-of-a-kind electromagnetic and electric power generation systems. GA-EMS’ expanding portfolio of specialized products and integrated system solutions support critical fleet, space systems and satellites, missile defense, power and energy, and process and monitoring applications for defense, industrial, and commercial customers worldwide. We have an opening for a Mechanical Engineer for Nuclear Design opening with our team in Rancho Bernardo. With consultative direction, this position exercises considerable latitude in determining technical objectives for the review, research, design, development, and/or solution(s) for a designated engineering system(s) or project(s)/program(s). Functioning in an advisory or leadership role participates in the planning and oversight of the successful resolution and implementation of engineering problem(s) and provides direction and guidance to professional and support...
Oct 09, 2026
Full time
Power Generation Mechanical Project Engineer, Senior
Pacific Gas & Electric Chico, CA
Requisition ID # 172973  Job Category: Power Generation; Engineering / Science  Job Level: Individual Contributor Business Unit: Energy Delivery Work Type: Onsite Job Location: Chico     Department Overview Power Generation operates and maintains PG&E's hydroelectric, fossil, solar generation and battery storage facilities, providing approximately 5,300 megawatts of generating capacity for our customers. Our nearly 1000 coworkers are dedicated to delivering safe, reliable and cost-effective generation to California in an environmentally responsible manner. Our hydro facilities include 62 conventional hydro powerhouses, a pumped-storage facility, 98 reservoirs, 168 dams and more than 200 miles of canals and flumes, among other water conveyances. Natural gas-fired plants in operation are Humboldt Bay Generating Station in Eureka; Colusa Generating Station in Colusa County and Gateway Generating Station in Antioch. Several utility-scale solar generation plants also are...