Postdoctoral Appointee: Credible Scientific Machine Learning & Data Driven Analysis, CA...

Sacbar; Livermore (CA); On-site; USD 70,000 - 110,000; Full time

Benefits offered by this job

Flexible work arrangements

Relocation assistance

Solid work/life balance

Job summary

Sandia National Laboratories seeks a Postdoctoral Appointee to advance trustworthy scientific machine learning (SciML) and data-driven analysis for computational science applications. You will develop ML surrogates and reduced-order models within physics-based simulations, and lead verification and uncertainty quantification studies.

Work onsite in Livermore, CA, collaborating with PIs and partners to benchmark methods against high-fidelity models.

Qualifications

• PhD (conferred within five years) in applied mathematics, computational science, engineering, statistics, computer science, or a related field.
• Expertise in machine learning, scientific machine learning, uncertainty quantification, or statistical learning.
• Experience developing or evaluating ML methods for simulation, image, signal, or high-dimensional data.

Responsibilities

• Develop and evaluate ML-based surrogates, reduced-order models, and embedded data-driven components within physics-based simulations.
• Design and execute verification, validation, uncertainty quantification, robustness testing, explainability, and interpretability studies.
• Apply feature-extraction and pattern-recognition methods to images, microstructures, sensor data, and high-dimensional outputs.
• Collaborate with Sandia PIs, national laboratories, and academic partners to benchmark data-driven methods against high-fidelity models and experiments.

Skills

Machine Learning

SciML

Uncertainty Quantification

Statistical Learning

Education

PhD (conferred within 5 years) in applied mathematics, computational science, engineering, statistics, computer science, or a related field

Tools

PyTorch

JAX

TensorFlow

scikit-learn

NumPy

SciPy

pandas

PyWavelets

OpenCV

Job description

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 Postdoctoral Appointee. Join a multidisciplinary team to advance trustworthy scientific machine learning (SciML) and data-driven analysis for computational science applications.

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

• Develop and evaluate ML-based surrogates, reduced-order models, and embedded data-driven components within physics-based simulations
• Design and execute verification, validation, uncertainty quantification, robustness testing, explainability, and interpretability studies
• Apply feature-extraction and pattern-recognition methods: wavelet analysis, tensor/matrix decompositions, energy-based features, anomaly detection, and supervised/unsupervised learning to images, microstructures, sensor data, and high-dimensional simulation outputs
• Collaborate with Sandia PIs, national laboratories, and academic partners to integrate, compare, and benchmark data-driven methods against high-fidelity models and experiments

Due to the nature of the work, the selected applicant must be able to work onsite in Livermore, CA.

Qualifications We Require

• PhD (conferred within 5 years) in applied mathematics, computational science, engineering, statistics, computer science, or a related field
• Expertise in machine learning, scientific machine learning, uncertainty quantification, or statistical learning
• Experience developing or evaluating ML methods for simulation, image, signal, or high-dimensional data
• Ability to obtain and maintain a DOE Q-level security clearance

Qualifications We Desire

• Hands-on experience with SciML surrogates, VVUQ, independent model evaluation, robustness, and explainable/interpretable ML
• Proficiency in wavelet and spectral analysis, tensor/matrix decomposition, and energy-based feature extraction
• Familiarity with supervised/unsupervised learning, classification, clustering, and anomaly detection
• Skilled in Python and ML libraries (PyTorch, JAX, TensorFlow, scikit-learn, NumPy, SciPy, pandas, PyWavelets, OpenCV, etc.)

About Our Team

The Quantitative Modeling and Analysis Department conducts research, development, and systems engineering in computer science and engineering to address important, complex national security problems. Key research areas include uncertainty quantification, optimization, inference modeling, data analysis, and algorithm development. Much of our application development work focuses on verification, validation and uncertainty quantification of complex problems. We provide trusted design and software development for large, operations software as well as detailed scientific computing software. The work is focused on providing efficient, validated information and technologies for use in predictive modeling and decision making.

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.