About Sandia:

Sandia National Laboratories is the nation’s 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 with amazing impact 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 work arrangements for many positions include 9/80 (work 80 hours every two weeks, with every other Friday off) and 4/10 (work 4 ten-hour days each week) compressed workweeks, part-time work, and telecommuting (a mix of onsite work and working from home)
• Generous vacation, strong medical 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.

What Your Job Will Be Like:

We are seeking a hardworking and dedicated Postdoctoral Appointee to work at the interface between physics- and process based predictive models and large spectral/temporal datasets, specifically focused upon persistently collected streams of multi-sensor electromagnetic data. Forward modeling efforts will include predicting signal source terms, the processes governing them, and their subsequent propagation to deployed sensors. Advanced uncertainty quantification (UQ) and sensitivity analysis (SA) approaches will be used to characterize and calibrate computational models resulting in predictions with quantified uncertainty. Real-time model calibration, via integrating robust calibration methods within a facility digital twin, will also be pursued.

On any given day, you may be called on to:

• Perform self-directed analysis on provided data sets
• Present/share results at team meetings with senior staff
• Represent Sandia efforts at multi-lab collaboration meetings
• Create publications and present results at conferences/workshops

Due to the nature of the work, the selected applicant must be able to work onsite 60% of the time. The selected applicant can work a combination of onsite and offsite work. The selected applicant must live within a reasonable distance for commuting to the assigned work location when necessary. This position is located in Livermore, CA, and the annual salary for this position is $112,200.

Anticipated travel requirements include 5 trips per year as well as local travel to other collaborator lab locations (LBNL, LLNL).

Qualifications We Require:

• PhD in Engineering, Chemistry, Physics, Applied Mathematics or related field
• Ability to obtain and maintain a DOE Q-level security clearance

Qualifications We Desire:

• Proven experience in computational and electromagnetic modeling/simulation
• Expertise in machine learning techniques, including supervised and unsupervised learning, along with uncertainty quantification
• Strong mathematical and statistical foundation in linear algebra, inverse methods, and optimization
• High Performance Computing (HPC) experience, including parallelization and programming in Matlab, Fortran, Julia, and/or C/C++
• Proficiency in the Python data science ecosystem, including NumPy, SciPy, Pandas, Jupyter, Anaconda, Scikit-Learn, and PyTorch/TensorFlow
• Knowledge of modern programming practices, including clean coding, software carpentry, unit testing, version control, IDEs, and LLM-assisted coding

About Our Team:

The Advanced Nuclear Fuel Cycle Technologies Department conducts applied research, experimental studies, and technology development to identify and integrate solutions to address technical and safety challenges associated with the use of nuclear materials in nuclear fuel cycles. Our work spans space applications, finite element analysis and computational fluid dynamic modeling of nuclear fuel cycle processes and facilities, commercial nuclear waste disposition, magnetometer-based sensing, computationally efficient modeling of electromagnetic signature propagation, and the rapid maturation of physics-based models across technical readiness levels.

Posting Duration:

This posting will be open for application submissions for a minimum of three (3) calendar days, including the 'posting date'. Sandia reserves the right to extend the posting date at any time.

Security Clearance:

Sandia is required by DOE to conduct a pre-employment drug test and background review that includes checks of personal references, credit, law enforcement records, and employment/education verifications. Applicants for employment need to be able to obtain and maintain a DOE Q-level security clearance, which requires U.S. citizenship. 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.

Applicants offered employment with Sandia are subject to a federal background investigation to meet the requirements for access to classified information or matter if the duties of the position require a DOE security clearance. Substance abuse or illegal drug use, falsification of information, criminal activity, serious misconduct or other indicators of untrustworthiness can cause a clearance to be denied or terminated by DOE, resulting in the inability to perform the duties assigned and subsequent termination of employment.

EEO:

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.

NNSA Requirements for MedPEDs:

If you have a Medical Portable Electronic Device (MedPED), such as a pacemaker, defibrillator, drug-releasing pump, hearing aids, or diagnostic equipment and other equipment for measuring, monitoring, and recording body functions such as heartbeat and brain waves, if employed by Sandia National Laboratories you may be required to comply with NNSA security requirements for MedPEDs.

If you have a MedPED and you are selected for an on-site interview at Sandia National Laboratories, there may be additional steps necessary to ensure compliance with NNSA security requirements prior to the interview date.

Position Information:

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.

Job ID: 699145

Job Family: 92

Regular/Temporary Position: T

Full/Part-Time Status: F