Senior Vibrations Test Engineer (R5091)

Founded in 2015, Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software and V-BAT and X-BAT aircraft. With offices and facilities across the U.S., Europe, the Middle East, and Asia-Pacific, Shield AI’s technology actively supports operations worldwide. For more information, visit www.shield.ai. Follow Shield AI on LinkedIn, X, Instagram, and YouTube.  Job Description: Do you enjoy working in a dynamic lab environment and contributing to hardware that can directly impact the safety of service members and civilians? Shield AI is looking for a hands-on engineer to help design, test, and validate the next generation of intelligent systems. The Mechanical Test team’s mission is to inform and improve Shield AI hardware design by quantifying product performance through custom measurement systems, specialized testing, and rigorous analysis. This role will focus on vibration, modal, structural, and environmental testing to help engineering teams understand how our products perform in real-world operating conditions. We are looking for candidates who are passionate about engineering principles, curious about how things work, and excited to grow in a fast-paced, collaborative environment. You will work closely with cross-functional partners to evaluate design performance, troubleshoot issues, and improve the customer experience. Success in this role requires technical creativity, strong organization, clear communication, and a willingness to listen, learn, debate respectfully, and solve difficult problems as part of a high-performing team. Lead the planning, execution, and analysis of vibration test programs supporting product development, qualification, and flight readiness. Design, build, and deploy instrumented test setups for vibration, modal, structural, and environmental testing using industry-standard measurement equipment. Execute shaker table testing including sine sweep, random vibration, sine-on-random, resonance search, dwell, and shock testing. Perform experimental modal analysis to characterize structural dynamics and validate finite element models. Develop fixture designs and test methodologies that accurately replicate operational loading conditions while minimizing fixture influence. Instrument hardware using accelerometers, strain gauges, force sensors, displacement sensors, and other dynamic measurement systems. Analyze vibration response data using frequency-domain and time-domain techniques to identify resonances, mode shapes, damping characteristics, and potential failure mechanisms. Partner closely with Mechanical Design and Structural Analysis engineers to correlate test results with analytical models and improve future designs. Investigate vibration-related hardware issues, perform root cause analysis, and recommend design improvements. Develop comprehensive test plans, procedures, reports, and technical presentations that clearly communicate results and engineering recommendations. Maintain vibration testing equipment, data acquisition systems, instrumentation, and calibration records. Support environmental qualification testing and other mechanical test activities as needed. B.S. in Mechanical Engineering, Aerospace Engineering, Structural Engineering, or a related technical discipline. Hands-on experience performing vibration testing of mechanical or aerospace systems through industry, research, internships, or competitive engineering projects. Experience operating electrodynamic shaker systems and associated vibration control software. Experience with accelerometers, signal conditioning, data acquisition systems, and dynamic instrumentation. Working knowledge of structural dynamics, vibration theory, modal analysis, and frequency response functions. Experience performing or supporting experimental modal testing and finite element model correlation. Familiarity with MIL-STD-810 vibration and shock testing or equivalent aerospace qualification standards. Experience interpreting vibration data and identifying resonances, structural response characteristics, and failure modes. Working knowledge of CAD software (NX preferred). Strong written and verbal communication skills with the ability to communicate technical findings to multidisciplinary teams. Demonstrated ability to take ownership of technical work, drive projects independently, and deliver high-quality results in a fast-paced engineering environment. Ability to obtain a Secret//Special Access Required (S//SAR) security clearance is desired. M.S. or Ph.D. in Mechanical Engineering, Aerospace Engineering, Structural Engineering, or a related technical field with an emphasis in structural dynamics or vibration. Experience designing vibration test fixtures and specialized dynamic test equipment. Experience using vibration control and data acquisition platforms