STR is seeking a Mechanical Engineer with experience in the design, fabrication, integration, and testing of subsystems or payloads for unmanned platforms with emphasis on undersea sensors, payloads and vehicles. You will work with teams to realize challenging undersea applications requiring novel and complex engineering solutions. These solutions can only be accomplished by working across multidisciplinary teams to implement and demonstrate them in specific warfighter and intelligence applications. What you will do: • Develop technical solutions for mechanical deployable payloads and vehicles, taking into account their complex interactions with harsh maritime environments. This work requires teamwork in key areas of design and simulation, fabrication, and validation testing of mechanical payloads and systems in underwater environments • Collaborate in all stages of undersea systems testing, including developing comprehensive test plans, building test infrastructure, and supporting teams both in the laboratory and at-sea to mature key technology and prototypes • Provide regular communication with internal leadership and teammates while providing key input to reports and presentations for customer reviews and engagement Who you are: • Ability to obtain and maintain a Top Secret security clearance, for which U.S. citizenship is needed by the U.S. Government • BS with 2+ years relevant experience or a MS in Mechanical Engineering, Ocean Engineering, Physics, or related fields • Demonstrated background in the design, modeling, fabrication, integration, and validation of mechanical systems in support of first-concept undersea sensor payloads and vehicles • Familiarity with computer-aided CAD/CAM design tools such as COMSOL, ANSYS, SolidWorks and tools to design components and systems • Proficiency in thermal modeling, finite element analysis, computational fluid dynamics, or other multi-physics modeling and simulation required to quantify system performance in its operational environment • Experience combining multiple external vendors and fabricators with in-house fabrication and integration resources to arrive at complete systems that meet functional objectives • Experience with materials and designs to survive harsh conditions including temperature and overpressure Ability to design and implement testing methods and apparatus to quantify mechanical functionality, performance, and readiness against metrics • Adherence to best practices for development and testing using system engineering processes that allow for continuous risk-reduction and evolution of functionality • Ability to prepare and deliver briefings to customers, program managers, and senior management with messages appropriately tailored to the audience and purpose Even Better: • Strong background in working with teams to field ocean-going unmanned systems and payloads. Pay Information Full-Time Salary Range: $100,000-135,000 The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate's experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions. STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, and Carlsbad, CA. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.