The successful candidate will report to the Principal Investigator for X-Ray Diagnostics of Fuel Injection and Sprays in the Transportation and Power Systems Division. The successful candidate will assist the Principal Investigator in conducting measurements of fuel injection, analyzing data, and reporting the results. The successful candidate will perform measurements of multi-phase flows, including automotive, aerospace, and ground power fuel injection and HVAC systems using Argonne’s Advanced Photon Source, including x-ray radiography, tomography, and high-speed imaging. The successful candidate will analyze the results with the goal of quantifying the fundamental fluid mechanics of the systems and will work with computational modelers to develop a better understanding of the injection and breakup processes. The successful candidate will write publications and make presentations of the results at conferences and meetings. **Position Requirements** + PhD in Aerospace Engineering, Mechanical Engineering, Physics, or Chemistry. + Knowledge of experimental fluid dynamics. + Knowledge of mechanical engineering concepts and procedures. + Computer and programming skills, including data processing and manipulation of large data sets. + Skilled in general laboratory instrumentation and safe experimental practices. + Skills in oral and written communications at all levels of the organization. + Experience and skills working in a team environment. + Ability to model Argonne’s core values of impact, safety, respect, integrity, and teamwork. + Ability to make our laboratory a safe, welcoming, inclusive, and accessible environment where all can thrive. Preferred Qualifications: + Experience with AI/ML for data analysis. **Job Family** Postdoctoral Family **Job Profile** Postdoctoral Appointee **Worker Type** Long-Term (Fixed Term) **Time Type** Full time _As an equal employment opportunity and affirmative action employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a diverse and inclusive workplace that fosters collaborative scientific discovery and innovation. In support of this commitment, Argonne encourages minorities, women, veterans and individuals with disabilities to apply for employment. Argonne considers all qualified applicants for employment without regard to age, ancestry, citizenship status, color, disability, gender, gender identity, gender expression, genetic information, marital status, national origin, pregnancy, race, religion, sexual orientation, veteran status or any other characteristic protected by law._ _Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department._ _All Argonne offers of employment are contingent upon a background check that includes an assessment of criminal conviction history conducted on an individualized and case-by-case basis. Please be advised that Argonne positions require upon hire (or may require in the future) for the individual be to obtain a government access authorization that involves additional background check requirements. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment._