43 senior principal mechanical engineer jobs found

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...

Diamond Foundry Inc. is solving the thermal limitation at the foundation of today's most exciting tech industries -- AI & cloud compute, electric-car power electronics, and 5G/6G wireless. We have managed to produce the world's first single-crystal diamond wafers and are now on a mission to put a diamond behind every chip. We are the rare unicorn that has grown fast and profitably. We received $515m in funding and are executing a multi-$B expansion plan for one of the greenest forms of tech manufacturing: converting greenhouse gas into diamond wafers using zero-emission energy. We're looking for an ambitious Mechanical Engineer to take responsibility for designing capital equipment and facilities systems, working across multiple engineering disciplines. You'll be working with an experienced team of mechanical and electrical engineers to take a pragmatic approach to equipment and facility design. You'll be responsible for whole projects, pulling in the talents of others when...

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. Vast is developing next-generation space stations 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. Using an incremental, hardware-rich and low-cost approach, Vast is rapidly developing its multi-module Haven Station. 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, followed by additional Haven modules to enable permanent human presence by 2030. Our team is all-in, committed to executing our mission safely and on time. If you want to work with the most talented people on Earth furthering space exploration for humanity, come join us....

About Galvanize Therapeutics Galvanize is a biomedical platform company operating at the convergence of engineering, biology, and healthcare delivery, aiming to deliver life-changing solutions to patients and their doctors. We design and develop Pulsed Electric Field Systems to achieve meaningful and lasting therapeutic outcomes for patients. About the role The Principal R&D Engineer, Design, is a technical leader responsible for driving the conception, development, and advancement of innovative medical device designs. This role sets design strategy, leads complex product development efforts, and champions best-in-class engineering practices across multiple programs. As a recognized expert in product design, the Principal Engineer brings deep technical insight, influences cross-functional direction, and ensures alignment between engineering execution, clinical needs, and business objectives. Qualifications Education and Training: Scientific degree in...

Position: R&D Engineer I Toray Performance Materials Corporation (TPMC) is seeking a hands-on, detail-oriented R&D Engineer I to design and develop advanced thermoplastic composite solutions for industries such as sports and recreation, consumer electronics, automotive, aerospace, robotics, defense, and infrastructure. This role focuses on composite layup design and manufacturing development, helping bring new products from concept to production readiness. Company Overview: As a leader in the development and manufacturing of thermoplastic composites technology and products, TPMC, a part of the Toray Advanced Composites (TAC) Group, is at the forefront of innovation. With a strong presence in consumer recreation, medical, electronics, and other industrial sectors, we're committed to growth and expanding into new markets. Position Overview : R&D Engineer I primary role is to design and develop thermoplastic composites, with a particular focus on the composites...

Logitech is the Sweet Spot for people who want their actions to have a positive global impact while having the flexibility to do it in their own way. Logitech is the Sweet Spot for people who want their actions to have a positive global impact while having the flexibility to do it in their own way. The Team and Role: We're looking for a Principal Mechanical Engineer to be a senior technical leader and decision-maker on our Video Collaboration product development team. This is a hands-on leadership role where you'll drive architecture decisions, resolve complex cross-functional challenges, and partner with regional engineering leadership to deliver world-class products. Our products are highly integrated systems combining cameras, speakers, microphones, displays, dense compute, complex thermals, and precision mechanisms. You'll work across the full product lifecycle (from early concept through mass production) partnering closely with Industrial Design, Product Management,...

**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...

Start designing tomorrow's future! Buro Happold has an exciting opportunity for a talented and experienced Mechanical Engineer to join our team in Los Angeles, California! The Associate Principal Mechanical Engineer will play a pivotal role in providing technical expertise and leadership to our Building Environments Group. You will work closely with clients, architects, other Buro Happold Engineers, and/or design team members as part of a dedicated and skilled team. Here at Buro Happold, expect the exceptional. From the projects you will work on to the clients we work with. From career-defining opportunities to an inclusive and diverse practice where we all contribute to a more equitable world. From our reputation to our relationships. Wherever your Buro Happold career takes you, it'll be anything but ordinary. Your next role Join us and be surrounded by exceptional opportunities in an environment alive with innovation and possibility. Your new team has a...

Sulzer is a leading engineering company with a proud heritage of innovation. Join our global team to grow your expertise and develop innovative solutions that enable a prosperous and more sustainable society. About the role Job Summary The Mechanical Engineer is responsible for researching, planning, designing, and developing mechanical products and systems. This includes instruments, controls, engines, and machines used in energy production, transmission, and measurement. This job profile is intended for early-career professionals who apply broad theoretical knowledge and require the ability to investigate and analyze problems. Solutions are typically discussed/verified with a more senior member. Position Summary: This role supports the engineering, configuration, and validation of High Stator Turbo (HST) Compressors within the Order Related Engineering (ORE) department. Responsibilities include developing sales-order-specific mechanical and automation designs, reviewing...

Salary : $145,678.08 - $185,797.44 Annually Location : Santa Clara, CA Job Type: Full-Time Job Number: 11-26-230 Department: Electric Utility Opening Date: 01/29/2026 Closing Date: Continuous FLSA: Non-Exempt Bargaining Unit: 4 Weighting Plan: 100% Oral, Qualifying Written Description The Department: Silicon Valley Power (SVP) currently provides over 40 percent of Santa Clara's electricity from carbon-free renewable resources. In addition to using green energy from large-scale wind, solar, geothermal and hydroelectric projects outside of the area, SVP employs innovative ways to locally produce electricity by capturing and burning methane gas from a closed city landfill and using power from solar generating systems on city-owned garages and vacant, unusable land. It is the mission of SVP to be a progressive, service-oriented utility, offering reliable, competitively priced services for the benefit of Santa Clara and its customers. Being competitive in the...

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. Vast is developing next-generation space stations 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. Using an incremental, hardware-rich and low-cost approach, Vast is rapidly developing its multi-module Haven Station. 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, followed by additional Haven modules to enable permanent human presence by 2030. Our team is all-in, committed to executing our mission safely and on time. If you want to work with the most talented people on Earth furthering space exploration for humanity, come join us....

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...

Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning to optimally engineer, additively manufacture, and flexibly assemble complex integrated vehicle structures and subsystems. Products created using DAPS are superior in performance, lower in cost, rapidly customizable to meet mission and customer-specific requirements, faster to market, and scalable on demand to high volume production. Divergent is a qualified Tier 1 supplier to global automotive OEMs, and Divergent is now expanding to support mission critical needs in the Aerospace and Defense sector. Join us to be a part of this transformative journey, where your impact will shape the future of technology and production. Purpose The Staff Automation & Controls Engineer will develop flexible robotic manufacturing & automation systems core to the Divergent...

Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning to optimally engineer, additively manufacture, and flexibly assemble complex integrated vehicle structures and subsystems. Products created using DAPS are superior in performance, lower in cost, rapidly customizable to meet mission and customer-specific requirements, faster to market, and scalable on demand to high volume production. Divergent is a qualified Tier 1 supplier to global automotive OEMs, and Divergent is now expanding to support mission critical needs in the Aerospace and Defense sector. Join us to be a part of this transformative journey, where your impact will shape the future of technology and production. Purpose The Principal Automation & Controls Engineer will lead the development of flexible robotic manufacturing & automation systems,...

Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning to optimally engineer, additively manufacture, and flexibly assemble complex integrated vehicle structures and subsystems. Products created using DAPS are superior in performance, lower in cost, rapidly customizable to meet mission and customer-specific requirements, faster to market, and scalable on demand to high volume production. Divergent is a qualified Tier 1 supplier to global automotive OEMs, and Divergent is now expanding to support mission critical needs in the Aerospace and Defense sector. Join us to be a part of this transformative journey, where your impact will shape the future of technology and production. Purpose The Manufacturing Engineer bridges design and production, optimizing designs for manufacturability while enhancing processes to support...

Sulzer is a leading engineering company with a proud heritage of innovation. Join our global team to grow your expertise and develop innovative solutions that enable a prosperous and more sustainable society. About the role Job Summary The (Mechanical) Engineering Expert is responsible for leading the design, development, and optimization of mechanical systems and components. This role provides expert-level technical leadership in mechanical engineering, ensuring that products meet performance, reliability, and cost targets. The expert collaborates across departments to drive innovation and resolve complex engineering challenges. This job profile is intended for recognized subject matter experts in a job area. Required to manage large projects or processes with limited oversight from manager. Coaches, reviews and delegates work to lower level professionals. Position Summary: Lead design, development, and testing and the implementation of innovative products and technologies....

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...

Salary : $191,823.00 - $268,553.00 Annually Location : Millbrae, CA Job Type: Full-Time Job Number: 2026-00076 Division: Rail Department: Rail Development Opening Date: 07/27/2026 Closing Date: 8/16/2026 11:59 PM Pacific General The Director, Railroad Systems Engineering will report to the Deputy Executive Director, Engineering, Capital and Modernization (ECM) and will be responsible for railroad systems engineering and civil/systems integration for the Peninsula Corridor Joint Powers Board (Caltrain). Essential Functions & Duties Responsible for all railroad systems engineering and the integration of operational systems including but not limited to communications (date and voice), Rail network, Positive Train Control (PTC), signaling, grade crossings, overhead contact system (OCS), 25kv traction power, Train control, SCADA, Electric Multiple Units (EMU) vehicles, CCTV, Public Address (PA), and Visual Message Signs (VMS). Responsible for managing...

Job Description Position Summary The Controls Engineer is responsible for the HVAC - Direct Digital Controls design, development and integration of all hardware drawings and software components as required to produce, complete, and fully functional building automation systems for assigned projects. Position Details HARDWARE DESIGN: Review plans, specifications and sales proposals for assigned projects and prepare engineering plans. Generate CAD control drawings and project submittal drawings as required on assigned projects. Select products, controllers and end devices as needed to perform required control sequences. Collaborates with other Engineers (Mechanical, Electrical & Plumbing) and contractors (Mechanical, Electrical & Plumbing) during the design phase. Utilizes and develops CAD tools used in the system engineering process. During the course of the contract and at the end of the job, updates hardware design packages based on changing project...