1+ months

Postdoctoral Appointee in Machine Learning and Uncertainty Quantification in Atomistic Modeling

Livermore, CA 94550
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We are seeking a Postdoctoral Appointee to join the Plasma & Reacting Flow Science team! The success candidate will employ machine learning (ML) and uncertainty quantification (UQ) methods for Bayesian learning of interatomic potentials (IAPs), forward propagation of uncertainty in molecular dynamics simulations, and model validation with experimental measurements. The work will involve development of advanced ML IAP constructions, optimal design and active learning of MLIAPs with density functional theory data, UQ with IAP model error constructions, as well as Bayesian optimization and model selection. The resulting capabilities will be integrated into a flexible multiscale workflow and made available to the broader research community. The project at-hand entails developing a predictive multiscale modeling capability that will advance the fundamental understanding of plasma-facing materials in fusion energy reactors. The project team includes experts in plasma-surface interactions, atomistic materials modeling, IAPs, ML, and UQ. This work will affect not only fusion energy materials research, but also other areas of materials discovery and is expected to result in publications in peer-reviewed journals.

Required:

+ PhD in a field of materials/physical sciences, applied mathematics, or engineering
+ Experience in uncertainty quantification and/or machine learning
+ Experience in computational science and software development

Desired:

+ Experience using state-of-the-art machine learning tools in the physical sciences
+ Experience in atomistic simulations
+ Experience in C++ and Python
+ Experience in performing interdisciplinary research in a team environment
+ Excellent interpersonal communication skills

Department Description:

The Plasma & Reacting Flow Science department at Sandia primarily works on projects funded by the U.S. Department of Energy Office of Science to address needs surrounding both high temperature and low temperature plasma phenomena, combusting flows, reacting gas-solid interfaces, uncertainty quantification (UQ), and related topics such as scientific machine learning. We operate state-of-the-art experimental laboratories, conduct work at the DIII-D tokamak reactor, and utilize both local computer clusters and the DOE Leadership Class supercomputers to conduct massively parallel simulations.

About Sandia:

Sandia National Laboratories is the nations premier science and engineering lab for national security and technology innovation, with teams of specialists focused on cutting-edge work in a broad array of areas. Some of the main reasons we love our jobs:

+ Challenging work withamazingimpact that contributes to security, peace, and freedom worldwide
+ Extraordinary co-workers
+ Some of the best tools, equipment, and research facilities in the world
+ Career advancement and enrichment opportunities
+ Flexible schedules, generous vacations,strongmedical and other benefits, competitive 401k, learning opportunities, relocation assistance and amenities aimed at creating a solid work/life balance*

_World-changing technologies. Life-changing careers._ Learn more about Sandia at: http://www.sandia.gov

*These benefits vary by job classification.

Security Clearance:

This position does not currently require a Department of Energy (DOE) security clearance.

Sandia will conduct a pre-employment drug test and background review that includes checks of personal references, credit, law enforcement records, and employment/education verifications. Furthermore, employees in New Mexico need to pass a U.S. Air Force background screen for access to Kirtland Air Force Base. Substance abuse or illegal drug use, falsification of information, criminal activity, serious misconduct or other indicators of untrustworthiness can cause access to be denied or terminated, resulting in the inability to perform the duties assigned and subsequent termination of employment.

If hired without a clearance and it subsequently becomes necessary to obtain and maintain one for the position, or you bid on positions that require a clearance, a pre-processing background review may be conducted prior to a required federal background investigation. Applicants for a DOE security clearance need to be U.S. citizens. If you hold more than one citizenship (i.e., of the U.S. and another country), your ability to obtain a security clearance may be impacted.

Members of the workforce (MOWs) hired at Sandia who require uncleared access for greater than 179 days during their employment, are required to go through the Uncleared Personal Identity Verification (UPIV) process. Access includes physical and/or cyber (logical) access, as well as remote access to any NNSA information technology (IT) systems. UPIV requirements are not applicable to individuals who require a DOE personnel security clearance for the performance of their SNL employment or to foreign nationals. The UPIV process will include the completion of a USAccess Enrollment, SF-85 (Questionnaire for Non-Sensitive Positions) and OF-306 (Declaration of for Federal Employment). An unfavorable UPIV determination will result in immediate retrieval of the SNL issued badge, removal of cyber (logical) access and/or removal from SNL subcontract. All MOWs may appeal the unfavorable UPIV determination to DOE/NNSA immediately. If the appeal is unsuccessful, the MOW may try to go through the UPIV process one year after the decision date.

EEO Statement:

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or veteran status and any other protected class under state or federal law.

:

This postdoctoral position is a temporary position for up to one year, which may be renewed at Sandia's discretion up to five additional years. The PhD must have been conferred within five years prior to employment.

Individuals in postdoctoral positions may bid on regular Sandia positions as internal candidates, and in some cases may be converted to regular career positions during their term if warranted by ongoing operational needs, continuing availability of funds, and satisfactory job performance.

Categories

Industry

  • Engineering
Posted: 2020-08-31 Expires: 2020-11-22

 World-changing technologies. Life-changing careers.

National security is our business. We apply science to help detect, repel, defeat, or mitigate threats.

For more than 60 years, Sandia has delivered essential science and technology to resolve the nation's most challenging security issues.

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Postdoctoral Appointee in Machine Learning and Uncertainty Quantification in Atomistic Modeling

Sandia National Laboratories
Livermore, CA 94550

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