Senior/Principal Mechanical Engineer

USMAT, Inc. develops innovative sensing technologies, robotic systems, and advanced engineering solutions for industrial, scientific, and defense-related applications. We are seeking an exceptional, hands‑on Senior / Principal Mechanical Engineer to help design and build next-generation sensing platforms, robotic systems, innovative thermal management technologies, and other cutting‑edge systems. This role is ideal for engineers who enjoy solving difficult technical problems, designing and building real hardware, and taking ownership from concept through deployment. You will work across multiple engineering disciplines while collaborating closely with a small, highly technical team. At USMAT, talented engineers have the freedom to innovate, pursue new ideas, and directly shape products, technology, and company direction. What You'll Work On Senior / Principal Mechanical Engineer USMAT, Inc. develops innovative sensing technologies, robotic systems, and advanced engineering solutions for industrial, scientific, and defense-related applications. We are seeking an exceptional, hands‑on Senior / Principal Mechanical Engineer to help design and build next-generation sensing platforms, robotic systems, innovative thermal management technologies, and other cutting‑edge systems. This role is ideal for engineers who enjoy solving difficult technical problems, designing and building real hardware, and taking ownership from concept through deployment. You will work across multiple engineering disciplines while collaborating closely with a small, highly technical team. At USMAT, talented engineers have the freedom to innovate, pursue new ideas, and directly shape products, technology, and company direction. Design and develop robotic and electromechanical systems, including mechanisms, actuators, precision assemblies, and motion control platforms Develop innovative thermal management solutions, including heat transfer, cooling systems, and high-temperature applications Design mechanical structures, housings, enclosures, and precision components for advanced sensing and instrumentation systems Perform mechanical, structural, and thermal analysis to optimize system performance, reliability, and manufacturability Develop detailed 3D CAD models, engineering drawings, and manufacturing documentation Design, fabricate, assemble, and test functional prototypes using CNC machining, additive manufacturing, and other fabrication techniques Integrate mechanical components with sensors, electronics, actuators, and control systems Develop experimental test fixtures, laboratory equipment, and specialized engineering tools Prototype, test, troubleshoot, and iteratively improve hardware systems Participate in full product development cycles from initial concept through testing, validation, and deployment Contribute to new technology concepts, patents, technical proposals, and R&D initiatives Why Engineers Like Working Here High technical ownership and autonomy Work on challenging, multidisciplinary engineering problems Small, highly capable team with rapid decision-making Opportunity to influence both technology and product direction Broad exposure across mechanical design, robotics, thermal systems, sensing, and systems engineering Direct involvement in design, fabrication, assembly, and testing rather than being limited to a narrow engineering function Fast‑moving environment where strong contributions have immediate impact Significant opportunity for technical and professional growth Requirements U.S. Citizenship Ability to independently execute complex technical work with high-quality results Excellent written and verbal communication skills Strong technical leadership and problem‑solving abilities Demonstrated hands‑on engineering skills and experience building and testing physical systems Passion for developing innovative technologies and turning ideas into working hardware