Nondestructive Evaluation Ultrasound - Postdoctoral Researcher

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. We are seeking a Postdoctoral Researcher in Ultrasonics to join the Nondestructive Evaluation (NDE) Group. In this role, you will conduct research to characterize complex, heterogeneous materials and components using advanced experimental and analytical methods. Relevant technical areas include ultrasonics, acoustics, laser and optical methods, wave propagation, vibrations, solid mechanics, and mechanics of materials. Working under the guidance of scientific staff, you will contribute to research focused on process characterization and part inspection. You will support mission-driven research that advances national security. This position offers the opportunity to build your research portfolio, publish impactful work, and collaborate with multidisciplinary teams in a highly applied environment. The position is within the Materials Engineering Division (MED) of the Engineering Directorate. This position requires full-time on-site presence due to the nature of the work. You will  - Conduct research and development in one or more of the following areas: ultrasonics, acoustics, laser ultrasonics, embedded sensors, mechanics of materials, and materials science. - Design, implement, and evaluate experimental methods for material characterization, in situ process feedback, and the nondestructive evaluation of parts and assemblies. - Analyze and interpret experimental data using signal processing, statistical analysis, and machine learning approaches. - Model characterization and inspection physics using finite element, ray-tracing, or Monte Carlo methods, as appropriate. - Contribute to the conception, planning, and execution of research projects addressing defined scientific and engineering problems. - Pursue independent yet complementary research aligned with programmatic needs and emerging technical opportunities. - Collaborate with engineers and scientists across disciplines to achieve project objectives. - Publish results in peer-reviewed journals and present findings at conferences, seminars, and technical meetings. - Perform other duties as assigned. - Ability to obtain and maintain a U.S. Department of Energy (DOE) Q-level security clearance, which requires U.S. citizenship. - Ph.D. in physics, mechanical engineering, materials engineering, or a related field. - Experience in one or more of the following areas: ultrasonics, acoustics, and wave propagation. - Demonstrated ability to design and execute experiments in one or more of the following areas: signal processing, machine learning, modeling, or data analysis. - Ability to develop independent research projects, including publications in peer-reviewed literature. - Proficient verbal and written communication skills, with the ability to collaborate effectively in a team environment and present and explain technical information. - Strong initiative and interpersonal skills, with the ability to work in a collaborative, multidisciplinary team environment.Qualifications We Desire - Experience with MATLAB and/or Python. - Experience with wave-propagation modeling and simulation, as well as multiphysics simulation tools such as COMSOL or ANSYS. - Experience with typical ultrasonic test equipment, including transducers, immersion scanning systems, and phased arrays. - Experience developing algorithms and applying data-processing techniques for wave propagation.Pay Range $122,028 - $143,328 Annually Please note that the pay range information is a general guideline only. Many factors are taken into consideration when setting starting pay including education, experience, the external labor market, and internal equity. #LI-Onsite Position Information This is a Postdoctoral appointment with the possibility of extension to a maximum of three years. The postdoctoral appointment is a temporary, mentored training position intended for individuals in the early stages of their postdoctoral research careers. Consistent with the structure of the program, applicants must have received their Ph.D. (or equivalent doctorate) within five years of the anticipated start date. Why Lawrence Livermore National Laboratory? - Included in 2026 Best Places to Work by Glassdoor! - Flexible Benefits Package - 401(k) - Relocation Assistance - Education Reimbursement Program - Flexible schedules (*depending on project needs) - Our values - visit https://www.llnl.gov/inclusion/our-values Security Clearance This position requires a Department of Energy (DOE) Q-level clearance.  If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. Also, all L or Q cleared employees are subject to random drug testing.  Q-level clearance requires U.S. citizenship.  Pre-Employment Drug Test External applicant(s) selected for this position must pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor. 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