Senior Mechanical Engineer Jobs in California

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Sr. Healthcare Mechanical Engineer/Project Lead

Stantec

•

San Francisco, California, USA

Full-time

Stantec's Buildings team is on a mission to become the world's leading integrated design practice. Our architects, engineers, interior designers, consultants, sustainability specialists, and technologists are passionate about the power of design. Our collaborative culture and our innovative, sustainable approach to projects help us create buildings that matter to our world. Together, we are enhancing the quality of life globally through design. Join us and design your place with Stantec. Your Op
Posted 38 days ago | Updated 5 hours ago

Sr. Healthcare Mechanical Engineer/Project Lead

Stantec

•

Sacramento, California, USA

Full-time

Stantec's Buildings team is on a mission to become the world's leading integrated design practice. Our architects, engineers, interior designers, consultants, sustainability specialists, and technologists are passionate about the power of design. Our collaborative culture and our innovative, sustainable approach to projects help us create buildings that matter to our world. Together, we are enhancing the quality of life globally through design. Join us and design your place with Stantec. Your Op
Posted 38 days ago | Updated 5 hours ago

Senior Manufacturing Engineer, Mechanical Assembly

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
Posted 13 days ago | Updated 6 hours ago

Senior Manufacturing Engineer, Mechanical Assembly, Second Shift

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
Posted 13 days ago | Updated 6 hours ago

Senior Mechanical Design Engineer (Hybrid-Puerto Rico)

RTX Corporation

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Remote or Aguadilla, Aguadilla, Puerto Rico

Full-time

Date Posted: 2025-07-02 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 Sr Mechanical Design Engineer. We're looking for an experienced professional, like you, to accept a high level of responsibility within
Posted 19 days ago | Updated 5 hours ago

Sr. Healthcare Mechanical Engineer/Project Lead

Stantec

•

San Francisco, California, USA

Full-time

Job Description Stantec's Buildings team is on a mission to become the world's leading integrated design practice. Our architects, engineers, interior designers, consultants, sustainability specialists, and technologists are passionate about the power of design. Our collaborative culture and our innovative, sustainable approach to projects help us create buildings that matter to our world. Together, we are enhancing the quality of life globally through design. Join us and design your place with
Posted 47 days ago | Updated 5 hours ago

Sr Electrical/Mechanical Engineer - Electrical Wiring and Interconnection Systems (EWIS)

Sierra Nevada Corporation

•

Remote or Lone Tree, Colorado, USA

Full-time

The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR and aviation, it is a leading prime manned and unmanned aircraft systems integrator for innovative, high-performance ISR and aviation systems. Its end-to-end Command, Control, Computers, Communications and Intelligence, Surveillance & Reconnaissance (C4ISR) capabilities encompass design, integration, test, certification, ground/flight training and complete logistics support. IAS t
Posted 33 days ago | Updated 6 hours ago

Experienced or Senior Mechanical System Design Engineer

Boeing Company

•

Seal Beach, California, USA

Full-time

Experienced or Senior Mechanical System Design Engineer Company: The Boeing Company Boeing Commercial Airplanes (BCA) is looking for an Experienced or Senior Mechanical System Design Engineer to join our Out-of-Production (OoP) Mechanical (Mech) Systems Design Engineering (DE) team based in Seal Beach, CA. The OoP Mech Systems DE team is responsible for Continued Operational Safety Program (COSP), Safety Related Problem (SRP); As well as Support to BCA Production, BGS Modifications, BGS Boein
Posted 25 days ago | Updated 6 hours ago

Senior Thermal Lab Mechanical Engineer

Boeing Company

•

El Segundo, California, USA

Full-time

Senior Thermal Lab Mechanical Engineer Company: The Boeing Company We are Boeing Research & Technology (BR&T): Boeing's global research and development team creating and implementing innovative technologies that make the impossible possible and enabling the future of aerospace. We are engineers and technicians, skilled scientists and bold innovators; Join us and put your passion, determination, and skill to work building the future! #TheFutureIsBuiltHere#ChangeTheWorld Within BR&T's Mission
Posted 46 days ago | Updated 6 hours ago

Mechanical Senior Project Engineer - Mission Critical Facilities

Stantec

•

Sacramento, California, USA

Full-time

Stantec's Buildings team is on a mission to become the world's leading integrated design practice. Our architects, engineers, interior designers, consultants, sustainability specialists, and technologists are passionate about the power of design. Our collaborative culture and our innovative, sustainable approach to projects help us create buildings that matter to our world. Together, we are enhancing the quality of life globally through design. Join us and design your place with Stantec. Your Op
Posted 38 days ago | Updated 6 hours ago

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
Posted 56 days ago | Updated 6 hours ago

Senior Mechanical Design Engineer, Tooling

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
Posted 48 days ago | Updated 6 hours ago

Senior Mechanical Design Engineer, Factory Automation

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
Posted 48 days ago | Updated 6 hours ago

Senior Mechanical Design Engineer (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
Posted 56 days ago | Updated 6 hours ago

Senior Thermal Mechanical Engineer

PsiQuantum

•

Palo Alto, California, USA

Full-time

Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real, useful quantum computers, capable of delivering the world-changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture, and a data center footprint. By harnes
Posted 60+ days ago | Updated 6 hours ago

Senior Avionics Mechanical Design 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
Posted 60+ days ago | Updated 6 hours ago

Mechanical Senior Project Engineer

Affiliated Engineers, Inc.

•

San Francisco, California, USA

Full-time

Overview Affiliated Engineers, Inc. (AEI) is a leading, multidisciplinary consulting engineering firm and collaborative community of over 800 employees who plan, design, and deliver high-performance, innovative, and holistic engineering solutions - positively impacting society and advancing humankind. Recognized in the Top 20 Engineering Firms and Top 3 Science and Technology Firms since 2000 by Building Design + Construction Magazine, AEI is dedicated to enhancing public health and improving
Posted 60+ days ago | Updated 6 hours ago

Senior Mechanical Structure Engineer

SAIC

•

San Bernardino, California, USA

Full-time

Job ID: 2502064 Location: SAN BERNARDINO, CA, US Date Posted: 2025-02-18 Category: Engineering and Sciences Subcategory: Mechanical Engr Schedule: Full-time Shift: Day Job Travel: Yes, 25 % of the Time Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Secret Potential for Remote Work: No Description This role involves evaluating and estimating launch vehicle flight and mechanical ground support equipment loads; assessing mechanical design of vehicle components,
Posted 60+ days ago | Updated 3 hours ago

Mechanical Design Engineer (Tooling Design Focus)

Oxford Global Resources

•

Santa Clara, California, USA

Contract

Title: Mechanical Design Engineer (Tooling Design Focus) Location: Santa Clara, CA 100% onsite Length of Contract: 6-12 months (Potential Contract-to-hire based on performance) Process: 3 rounds, Phone/Onsite Ideal Start Date: ASAP Background Check/Drug Screen Scope: As a Mechanical Design Engineer focused on tooling, you ll collaborate with a cross-functional team of Hardware Engineering, Platform Design, Reliability Engineering, and global Contract Manufacturing (CM) partners. You ll be part
Easy Apply
Posted 25 days ago | Updated 15 days ago

Mechanical Engineer (kinematic design, optics, precision mechanical design) in Santa Clara, CA

DBA Web Technologies

•

Santa Clara, California, USA

Full-time

Mechanical Engineer (kinematic design, optics, precision mechanical design) in Santa Clara, CA 7+ to 10 years of experience POSITION: Mechanical Engineer (kinematic design, optics, precision mechanical design) LOCATION: Santa Clara, CA (onsite) DURATION: Full-Time SALARY: Excellent Compensation with benefits TRAVEL: Occasional SKILLS: Mechanical Engineer, kinematic design, optics, precision mechanical design principles DESCRIPTION: This position is in the Semiconductor Infrastructure Solution
Easy Apply
Posted 36 days ago | Updated 7 hours ago