78 senior mechanisms engineer jobs found

About the job Senior Mechanisms Engineer Why Castelion, Why Now Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts. This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact. Senior Mechanisms Engineer We are seeking a Senior Mechanisms Engineer to design and deliver high-performance mechanical actuation systems for Castelion's long-range hypersonic strike vehicles. This role is critical to enabling precise and reliable control surface motion and deployment mechanisms under extreme flight conditions. You will work hands-on with multidisciplinary engineering teams to design, analyze, build, and validate mechanisms such as...

Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage. About The Role: Hermeus is seeking a Senior Mechanisms Engineer to join our Vehicle & Mechanisms Team. In this senior-level role, you will be responsible for designing and developing complex mechanical systems and mechanisms that are critical to the success of our high-speed aircraft projects. Responsibilities Mechanism Design: Lead the design and development of mechanical systems, mechanisms, and components for aerospace applications. Collaborate with cross-functional teams to define project requirements and objectives. Analysis and Simulation:...

Senior Mechanisms Engineer Radiant is seeking a highly motivated Senior Mechanisms Engineer to design and develop critical mechanisms within Kaleidos. You will solve unique challenges creating efficient and reliable mechanisms that control reactivity or actuate critical safety features. You will be responsible for the following: trade studies, material selection, detailed structural analysis, assembly, integration, and testing. You will have an instrumental impact of fueling the first new commercial reactor design in over 50 years by 2026. Responsibilities & Duties : Ownership of critical mechanisms such as the control blade actuator or air jacket valves. Conduct trade studies and develop designs to meet program requirements. Perform detailed thermomechanical analysis (static strength, durability/fatigue) and kinematic analysis to determine structural integrity and performance margins using both hand calculations and finite element tools. Develop and execute...

About Radiant Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028. About the Role Radiant is seeking a highly motivated Senior Mechanical Engineer, Mechanisms to design and develop critical...

Job Type Full-time Description Join the Teknova Team and Help Shape the Future of Health When you join the Teknova team, you're helping to create the future of health. Our customers are working to discover novel therapies that will help people everywhere live longer, healthier lives. We make sure they have a reliable supply of the essential ingredients they need to succeed, and every member of our team plays an important role. Job Overview We are seeking an exceptional Senior Mechanical Engineer to design, develop, and validate semi- and fully automated production equipment. This is a hands-on role for someone who finds creative, sound engineering solutions to challenging problems, with a strong focus on quality, reliability, and execution. You will collaborate closely with cross-functional teams including Quality, Facilities, MSAT, and Operations and provide technical leadership and mentorship to junior engineers. Our Culture : At Teknova, our culture is all about...

About the job Senior Warhead Design Engineer Why Castelion, Why Now Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts. This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact. Senior Warhead Design Engineer Castelion is designing and building next-generation hypersonic weapon systems that restore stability through credible deterrence. We are seeking a hands-on, mission-driven Senior Warhead Design Engineer to lead the design, development, and integration of advanced next-generation systems for our long-range hypersonic strike vehicles. This is a high-impact role for someone with deep expertise in energetic devices and...

Company Description CREATIVITY IS OUR SUPERPOWER. It's our heritage and it's also our future. Because we don't just make toys. We create innovative products and experiences that inspire fans, entertain audiences and develop children through play. Mattel is at its best when every member of our team feels respected, included, and heard-when everyone can show up as themselves and do their best work every day. We value and share an infinite range of ideas and voices that evolve and broaden our perspectives with a reach that extends into all our brands, partners, and suppliers. Job Description The Opportunity: This position is a focused, technical engineering role responsible for supporting and helping to drive technical product innovation and the development of creative new product concepts into manufacturable solutions. This position also provides project support to more senior engineers acting as mentors to help gain experience. This position serves as focal point for...

Company Description Join us and make YOUR mark on the World! Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact. Job Description We have multiple openings for Spacecraft Systems Engineers to provide spacecraft subject matter expertise as part of a multi-disciplinary team performing concept development, requirements generation, modeling & simulations, and analyses of advanced space payloads and spacecraft models for the Z Program's Space Science and Security Program (SSSP). You will collaborate with...

Company Description Join us and make YOUR mark on the World! Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact. Job Description We have an opening for a Senior Optomechanical Engineer for space applications. You will contribute to thedevelopment of next-generation large-aperture space telescopes, optical payloads, andprecision optical systems supporting U.S. national security andscientific missions. This role focuses on optomechanicaldesign, precision mechanisms, structural andthermal performance, and...

Company Description Join us and make YOUR mark on the World! Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact. Job Description We have an opening for a Senior Optomechanical Engineer for space applications. You will contribute to the development of next-generation large-aperture space telescopes, optical payloads, and precision optical systems supporting U.S. national security and scientific missions. This role focuses on optomechanical design, precision mechanisms, structural and thermal performance,...

Job Type Full-time Description U.S. Citizenship Required. Ability to qualify for a US Department of Defense Top Secret security clearance required. Candidate must be SAP and SCI program eligible. This is an on-site position. Toyon Research Corporation is an industry leader in the areas of complex space and missile systems analysis, aerothermodynamics, payload design and development, and ground and flight testing. Our Aerospace Systems Group provides innovative technical solutions to support aerospace programs for the Department of Defense (DoD) and their agencies. We are seeking a Senior Mechanical Engineer to lead development of novel electro-mechanical space systems, applying appropriate design methodologies to arrive at mature deliverable hardware. Responsibilities: Generate designs of mechanical systems for space applications from scratch and develop that technology through test and delivery Provide input to Program Management to define project objectives,...

About Us: Havoc is a leader in all-domain collaborative autonomy. Its software-defined hardware approach powers military and commercial-grade autonomous systems across sea, air, and land to sense, decide, and act together in complex and contested environments. Havoc connects assets, enabling them to share information, adapt in real time, and continue operating even when communications are disrupted or denied. Havoc optimizes mission performance and minimizes human risk. Havoc was founded in 2024 and headquartered in Providence, Rhode Island. Learn more at Havoc: All-Domain Collaborative Autonomy . About the Role HavocAI is seeking a Senior Rapid Prototyping Engineer to lead the technical maturation of Locust, our advanced unmanned aircraft system (UAS), as it transitions from a demonstrated prototype to a Department of Defense (DoD) fieldable, Low-Rate Initial Production (LRIP) platform. This role is for an engineer who wants to spend significant time working directly with...

About Us: Havoc is a leader in all-domain collaborative autonomy. Its software-defined hardware approach powers military and commercial-grade autonomous systems across sea, air, and land to sense, decide, and act together in complex and contested environments. Havoc connects assets, enabling them to share information, adapt in real time, and continue operating even when communications are disrupted or denied. Havoc optimizes mission performance and minimizes human risk. Havoc was founded in 2024 and headquartered in Providence, Rhode Island. Learn more at Havoc: All-Domain Collaborative Autonomy . About the Role HavocAI is seeking a Senior Mechanical Engineer to lead the technical maturation of Locust, our advanced unmanned aircraft system (UAS), as it transitions from a demonstrated prototype to a Department of Defense (DoD) fieldable, Low-Rate Initial Production (LRIP) platform. This is a hands-on engineering leadership role where you'll drive airframe design for...

We're looking for a Senior Mechanical Engineer for Midjourney Medical - from precision electromechanical assemblies up to the large-scale structures and mechanisms that hold everything together and make it move. This role spans the full range of scale: one week you might be refining a compact transducer mount, the next you're architecting a structural frame or designing the motion system that positions hardware within it. This is a hands-on role on a small cross-functional team. You'll take problems from whiteboard sketch to working hardware yourself - designing in CAD, prototyping in the shop, testing, iterating, and integrating with research teams, electrical and software engineers along the way. We move fast and expect you to drive your own work: identifying what needs to happen next, making sound engineering calls without waiting for permission, and shipping hardware that works. What you'll do Own parts of the mechanical systems end to end - structures, mechanisms, and...

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...

Bring more to life. Are you ready to accelerate your potential and make a real difference within life sciences, diagnostics and biotechnology? At Molecular Devices, one of Danaher's 15+ operating companies, our work saves lives-and we're all united by a shared commitment to innovate for tangible impact. You'll thrive in a culture of belonging where you and your unique viewpoint matter. And by harnessing Danaher's system of continuous improvement, you help turn ideas into impact - innovating at the speed of life. Join Molecular Devices and help drive scientific discovery for life science customers in academia, biotech, pharma, and government. Our automated and AI-enabled technology empowers researchers to tackle complex questions and gain deep insights, accelerating the development of safer, more effective therapeutics. As part of our team-rooted in collaboration, authenticity, and innovation-you'll ultimately contribute to groundbreaking science that enhances lives globally...

ATC Automation is seeking a hands-on and innovative Senior Mechanical Design Engineer to lead the mechanical development of custom automation machinery and tooling systems at our Simi Valley, CA location. Remote opportunities may be considered for highly qualified candidates, with occasional travel required to the Simi Valley facility. Projects will range in size and complexity, from rapid R&D initiatives to fully integrated, high-speed production systems. In this role, you will collaborate directly with customers to define project requirements and work alongside a multidisciplinary engineering team to deliver reliable, high-performance automation solutions. This position offers a competitive annual salary range of $120,000 to $140,000, along with opportunities for continued professional development and career advancement. Benefits include Medical, Dental, Vision, 401(k), Life Insurance, Health Savings Account, Flexible Spending Account, and Paid Time Off. If you are driven by...

Who is Anatomage? Founded in 2004, Anatomage is a world-leading health care technology company. Anatomage is committed to transcending the limitations of existing medical education with innovative products that elevate the teaching and learning process. Our staff is relentlessly committed to quality and customer satisfaction, striving to make sure our customers realize the full benefits of our unique products. Anatomage is the global 3D medical application leader. Our products are currently installed and used in thousands of universities, institutions, clinics, and hospitals all over the US and world-wide. The Anatomage Table is the most technologically advanced 3D anatomy visualization system for anatomy education and is being adopted by many of the world's leading medical schools and institutions. About the Role: As a Senior Mechanical Design Engineer , you will take ownership of complex and open-ended mechanical engineering projects at Anatomage. You will work closely...

Northwood is a modern space infrastructure company bringing the benefits of space to the masses through advanced communications technology. We are building a global network of phased array ground stations that enable real-time, reliable communication for satellite missions such as national security, global connectivity, and disaster response. With a vertically integrated approach, Northwood designs, builds, and rapidly deploys scalable systems that power the next generation of space missions. If you like solving complex challenges and seeing your work deployed around the world with real impact, Northwood is the place to do it. Role Northwood is seeking a motivated Mechanical Design Engineer Intern to join our dynamic team, assisting in the design of structures, systems, tooling, and other products for our ground station antennas. This internship will provide hands-on experience in designing and developing hardware that will be deployed globally, as well as fabrication and...

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...