27 principal structural engineer jobs found

Principal Structural Analysis Engineer What You'll Do Perform stress analysis of metallic and composite structural components, assemblies and systems to provide inputs to the design and ensure structural integrity. Author, review and approve analysis documentation. Create and/or utilize Finite Element Models (FEM). Perform Durability and Damage Tolerance (DADT) assessments. Review and approve engineering definition for release in the product lifecycle system (PLM). Author, review and approve structural test plans and reports. Compare structural test results to analytical models (test vs Finite Element Model). Develop stress analysis tools and methodologies. Support multi-disciplinary configuration development and trade studies. Interface with materials & processes, structural test laboratories, flight test, manufacturing and customers/regulation authorities. Review, guide and support programs for new, supplemental and experimental certification under FAR Part 23...

Salary : $140,447.00 - $212,780.00 Annually Location : BART Headquarters - 6th Fl Job Type: Full-Time Job Number: 202600177 Executive Office: Operations Cost Center: Civil/Struc/Track Engineering Opening Date: 08/10/2026 Closing Date: 10/10/2026 11:59 PM Pacific FLSA: Exempt Bargaining Unit: Non-Represented Employees Marketing Statement Ride BART to a satisfying career that lets you both: 1) make a difference to Bay Area residents, and 2) enjoy excellent pay, benefits, and employment stability. BART is looking for people who like to be challenged, work in a fast-paced environment, and have a passion for connecting riders to work, school and other places they need to go. BART offers a competitive salary, comprehensive health benefits, paid time off, and the CalPERS retirement program. Job Summary Note: This job announcement closes on October 10, 2026 at 11:59 PM Pacific Time. Applications for this job posting will be reviewed in batches based on the...

Career Area: Engineering Job Description: Your Work Shapes the World at Caterpillar Inc. When you join Caterpillar, you're joining a global team who cares not just about the work we do - but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here - we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it. Solar Turbines is looking for a motivated team member to work on New Product Introduction (NPI) using the agile development process. The Principal NPI Mechanical Engineer is responsible for driving the development and delivery of new turbomachinery products from concept through beneficial use. This role leads mechanical design efforts, evaluates and refines design solutions, and ensures they are safe, high-quality, and cost-effective. Success in this...

Introduction to the Job In this role, you will serve as a principal technical leader for optomechanical architecture and design across new product development and sustaining engineering initiatives. You will collaborate closely with optical, mechanical, systems, controls, thermal, manufacturing, service, quality, and supplier teams to deliver stable, precise, reliable, and manufacturable optomechanical solutions throughout the product lifecycle. Based in San Diego, California, you will provide technical leadership for Cymer's Light Conditioning Function team. You will guide complex module development, introduce new technologies, sustain and improve released products, and influence engineering roadmaps five to seven years ahead. You will help define the future of precision engineering while ensuring existing products remain reliable, manufacturable, serviceable, and responsive to customer needs. Role and Responsibilities In this Principal Mechanical Engineer role, you...

Vast is developing next-generation space stations and space infrastructure using an incremental, hardware-rich, and low-cost approach. Vast is rapidly developing its multi-module Haven Station to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Haven Demo's 2025 success made Vast the only operational commercial space station company to fly and operate its own spacecraft. Next, Haven-1 is expected to become the world's first commercial space station when it launches in 2027, followed by additional Haven modules. Additionally, the company recently announced Vast Satellite , a high-power satellite product line leveraging its space station components and the heritage of Haven Demo. Headquartered in Long Beach, California , and with more than 1,000 employees and over a billion dollars in private capital, Vast has built...

The Structural Engineer (EIT) role requires knowledge of structural engineering principles, structural engineering analysis, and knowledge of common construction material and their properties. Interest in learning design skills utilizing aluminum and glass, as well as knowledge of traditional primary structural design utilizing steel, concrete and wood. Key Responsibilities Well grounded in structural modelling, analysis and design Ability to develop and review designs, drawings, specification, and technical memoranda Excellent interpersonal, verbal and written communication skills Highly organized and able to prioritize multiple tasks and demonstrate a flexible approach to work assignments Good ability to shift focus between changing priorities and balance day to day project work (with immediate deadlines) with long term projects Demonstrate a commitment to client service Attention to detail and accuracy are required Highly motivated individual who can work...

About Starpath Starpath Robotics is developing a full-stack solution for commercial scale rocket propellant production on the Moon and Mars. We are building one of the key enabling technologies that will make humans a multi-planet species. If high ownership, fast pace, working with hardware, and solving challenging technical problems sound like a dream come true, come join the team! Senior/Principal Mechanical Engineer In this role, you will be responsible for the development of critical mechanical systems on Starpath's Rover platform. Depending on your prior work experience, you may work on a variety of systems, such as: (1) low-cost, high-reliability electromechanical actuators, (2) various structures and passive mechanisms, or (3) thermal control systems and autonomy hardware integration. You will own these systems from developing design requirements through to flight. Responsibilities: Own architectures, systems, subsystems, and components from requirements to...

Location: The Greater Los Angeles Metropolitan Area, CA (Onsite) If you're interested in learning more about this opportunity or beginning the interview process, feel free to connect directly via LinkedIn: LinkedIn: https://www.linkedin.com/in/ra... Principal Mechanical Engineer - Launcher Systems An advanced aerospace and defense technology company is seeking a highly experienced Principal Mechanical Engineer to lead the architecture, design, and integration of next-generation launcher systems supporting UAV and missile platforms. This role will own launcher hardware development from concept definition through production and deployment across mobile ground and maritime applications. The ideal candidate brings deep launcher system expertise, strong electro-mechanical integration capability, and direct experience designing ruggedized hardware for harsh operational environments. This is a highly hands-on technical leadership role suited for engineers who thrive in fast-moving...

Location: The Greater Los Angeles Metropolitan Area, CA (Onsite) If you're interested in learning more about this opportunity or beginning the interview process, feel free to connect directly via LinkedIn: LinkedIn: https://www.linkedin.com/in/ra... Principal Mechanical Engineer - Platform Integration An advanced aerospace and defense technology company is seeking a Principal Mechanical Engineer to lead the integration of ruggedized sensor and electronics systems onto large mobile platforms for government and defense applications. This role is focused on translating advanced sensing and electronics technologies into durable, field-deployable systems capable of surviving demanding operational environments across vehicle, trailer, and maritime platforms. The ideal candidate brings deep experience with mechanical integration, ruggedized hardware design, environmental survivability, and large-scale platform constraints. This is a highly hands-on engineering role requiring...

About the Organization E2 Consulting Engineers, LP (E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering services including, project engineering and design, federal base operations and infrastructure support services, gas pipeline construction and inspection services, environmental consulting and remediation, and information technology services. At E2, we value safety, innovation and collaboration, and we are dedicated to excellence. Overview E2 is seeking a Pipeline / Instrumentation & Controls Principal Engineer to support natural gas utility and energy infrastructure projects throughout Southern California. This position will support the planning, design, execution, and commissioning of pipeline, distribution regulator station, gas control, automation, and remote monitoring projects. The engineer will work directly with clients, project managers, design teams, construction personnel, equipment vendors, and other...

Principal Mechanical Engineer Build the Future of High-Performance Connectivity At ThinKom, we don't just build antennas - we design high-performance, next-generation mechanical systems that connect the world across air, land, sea, and space. From Inflight Connectivity (IFC) to High-Power Microwave (HPM) systems to Defense SATCOM, our technology operates in some of the world's most demanding environments. We're looking for a Principal Mechanical Engineer who loves hands-on engineering, thrives on solving hard hardware problems, and wants to see their designs go from napkin sketch to physical deployment. If you're ready to lead critical programs, mentor rising talent, and push the limits of advanced satellite communications, this is your platform. Position Summary As a Principal Mechanical Engineer, you will lead the mechanical design, analysis, development, and manufacturing of advanced stationary and mobile antenna systems and related mechanical assemblies. You'll work closely...

**Applicants must be U.S. Citizens or U.S. Permanent Residents (Green Card holders) to meet customer and regulatory requirements** Who We Are We are pioneering modular motion technologies to power the next generation of innovation for Industrial, Aerospace and Defense. If you're excited about disrupting legacy industries, and passionate about building the financial infrastructure behind cutting-edge hardware, let's chat! We are at the forefront of innovation, crafting exclusive motion control components that propel the industrial, aerospace, and defense sectors into the future. A couple other things: We offer a lot of autonomy We like to run lean for impact We have great benefits We are well funded, and already generating revenue We're currently in Torrance, CA, but will be moving into a new facility in Hawthorne, CA in the summer! What you'll do: We are seeking a versatile, high-impact Principal Engineer to lead the development of mission-critical hardware. This is...

Worker Type Regular Job Description Summary The Sr. Mechanical Engineer applies engineering techniques to design, install, modify, analyze, repair and test tools, engines, machines and other mechanically functioning equipment. Leads and supports the mechanical design, testing, and production of electrical machines as well as the design of electronics packaging for high altitude aerospace applications. Leads or supports mechanical packaging development effort for electronic equipment that withstand stringent environmental requirements (i.e., mass, volume, thermal, vibration). Manages mid-size development projects outsourced to sub-contractors (development of a system, equipment or components). Position Responsibilities Leads or supports the thermal, structural, dynamic, and fluid flow analysis efforts for electronics equipment Leads the testing and data collection in the laboratory and the field Models the mechanical devices and selects the proper material...

Worker Type Regular Job Description Summary The Mechanical Engineer III applies engineering techniques to design, install, modify, analyze, repair and test tools, engines, machines and other mechanically functioning equipment. Leads and supports the mechanical design, testing, and production of electrical machines as well as the design of electronics packaging for high altitude aerospace applications. Leads or supports mechanical packaging development effort for electronic equipment that withstand stringent environmental requirements (i.e., mass, volume, thermal, vibration). Manages mid-size development projects outsourced to sub-contractors (development of a system, equipment or components). Position Responsibilities Leads or supports the thermal, structural, dynamic, and fluid flow analysis efforts for electronics equipment Leads the testing and data collection in the laboratory and the field Models the mechanical devices and selects the proper material...

Divergent is building the new industrial age. Every day, our teams design, manufacture, and assemble advanced systems for some of the world's most demanding industries. Our integrated engineering and manufacturing platform transforms complex designs into production-ready solutions, helping customers move faster, build smarter, and deliver critical systems when they matter most. Divergent is a qualified Tier 1 supplier to global automotive OEMs and supports leading U.S. aerospace and defense companies. Join us and help push the boundaries of what can be built. Purpose The Staff Automation & Controls Engineer will develop flexible robotic manufacturing & automation systems core to the Divergent Adaptive Production System (DAPS). The ideal candidate has a track record of successfully architecting and deploying advanced automated systems in a quick changing, start-up environment. This role will take a hands-on execution approach and use their skills in hardware, software...

Divergent is building the new industrial age. Every day, our teams design, manufacture, and assemble advanced systems for some of the world's most demanding industries. Our integrated engineering and manufacturing platform transforms complex designs into production-ready solutions, helping customers move faster, build smarter, and deliver critical systems when they matter most. Divergent is a qualified Tier 1 supplier to global automotive OEMs and supports leading U.S. aerospace and defense companies. Join us and help push the boundaries of what can be built. Purpose The Principal Automation & Controls Engineer will lead the development of flexible robotic manufacturing & automation systems, core to the Divergent Adaptive Production System (DAPS). The ideal candidate has a track record of successfully architecting and deploying advanced automated systems in a quick changing, start-up environment. This role will take a hands-on execution approach and use their skills...

Worker Type Regular Job Description Summary The Sr. Mechanical Engineer applies engineering techniques to design, install, modify, analyze, repair and test tools, engines, machines and other mechanically functioning equipment. This individual will be a part of a design team focused on development of the next generation UAV systems and their subsystems. This includes all levels and facets of design from conceptual clear through the detailed design and will include building and testing of these systems. Position Responsibilities Designs structural components, electro-mechanical design, payload mechanical design, ground equipment mechanical design, launching systems, flight control actuators integration, thermal analysis, prototype hardware development, tooling and fixtures design Reads and interprets blueprints, technical drawings, schematics, and computer-generated reports. Assists project managers with the planning and scheduling of engineering work Confers with...

QuantumScape is on a mission to transform energy storage with solid-state lithium-metal battery technology. The company's next-generation batteries are designed to enable greater energy density, faster charging and enhanced safety to support the transition away from legacy energy sources toward a lower carbon future. What we need: Join us on our mission as we transform energy storage to enable a more sustainable future. We are looking to add a Mechanical Engineer, Principal Member of Technical Staff (PMTS) to our Cell Engineering and Manufacturing Development team. This individual will be responsible for designing and scaling QuantumScape's unique solid-state lithium metal batteries for high volume production. This work includes designing new cell structures, encasings, components, and assembly tools in addition to methodologies to validate the fidelity of these new designs. You must have experience working with electrochemical energy storage devices such as lithium-based...

Principal Additive Manufacturing Engineer Los Angeles, CA (in-person) About Arcturus Arcturus is creating a new wire technology stack that uses carbon nanomaterials to overcome the materials limitations of metals where performance breaks down, at real operating temperatures. Our technology is designed to significantly improve the performance of electric motors for drones and robotics, heat sinks, and ultimately the entire energy grid. Why you should join us This is a ground-floor opportunity to help build something that has never been done before. You would join as an early principal technical hire and help define how Arcturus turns metal additive manufacturing into a core company capability. This is a high-ownership individual contributor role for someone who wants to solve hard manufacturing problems, mentor others, and help build a first-of-its-kind materials platform from the ground up. Purpose We are seeking a Principal Additive Manufacturing Engineer who can...

About CIRCOR Aerospace & Defense CIRCOR Aerospace & Defense is focused on the design, development, and manufacture of specialty fluid and motion control products for demanding aerospace and defense applications. CIRCOR products are flying on most commercial and military aircraft, including single and twin aisle air transport, business and regional jets, military transports and fighters, and commercial and military rotorcraft. Other markets include unmanned aircraft, shipboard applications, and military ground vehicles. Business units are in Corona, California; Warren, Massachusetts; Hauppauge, New York; Paris, France; Uxbridge, UK; and Tangier, Morocco. Parent company CIRCOR International is headquartered in Burlington, Massachusetts and CIRCOR Aerospace & Defense is headquartered in Corona, California. POSITION DETAILS Position Summary The Principal Engineer supports the design effort of Fluid Controls and Actuation Products. This position requires a deep...