1+ months

Computational Modeling Researcher (Mid-Career)

Livermore, CA 94550

Posting Duration:

This posting will be open for application submissions for a minimum of seven (7) calendar days, including the ‘posting date’. Sandia reserves the right to extend the posting date at any time.

COVID-19 Vaccination Mandate:

Sandia demonstrates its commitment to public safety in the national interest by requiring that all new hires be fully vaccinated or have an approved medical or religious accommodation before commencing employment. The requirement also applies to those who are telecommuting and working virtually.

Any concerns about the ability to meet this requirement should be directed to HR Solutions at (505) 284-4700.

What Your Job Will Be Like:

We are seeking a computational modeling researcher (job title: R&D S&E, Computer Science) to join our multidisciplinary computational research team in supporting a variety of projects involving chemical science, mass and energy transfer, fluid dynamics, materials research, and related topical areas. Our work in these areas often includes multiscale modeling, machine learning, uncertainty quantification (UQ), statistical inversion, and validation of domain-specific models (e.g. atomistic materials models or quantum chemistry models). Well-matched candidates should be creative problem solvers with fundamental knowledge in one or more of these areas, with extensive experience in scientific computing, as evidenced by publications and codes.

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

+ Perform verification, validation and/or uncertainty quantification (VVUQ) of thermal, fluid dynamics and/or reacting material (e.g., solid decomposition, gas phase combustion, fire) simulations to support a variety of projects (e.g. nuclear safety/design and energy related research) for internal and external customers (e.g., the Department of Energy).

+ Develop and use tools to conduct computational simulation studies for verification and validation (VV) and/or UQ as applied to quantum chemistry, chemical kinetics, fluid dynamics, turbulent flow, multiphase flow, conductive/convective/radiative transport, thermal-mechanical material response, reacting flow, porous media flow and heat transfer, or thermal decomposition.

+ Apply and develop uncertainty quantification techniques to build model credibility through the application of verification and validation principles.

+ Work closely with teams of code developers, analysts, and experimentalists to perform validation of complex and challenging problems.

+ Collaborate and interact closely with scientists, engineers and other researchers and analysts across the laboratory at both the California and New Mexico sites.

Applicants on this requisition may be interviewed and/or hired by one of several organizations at Sandia National Laboratories.

Qualifications We Require:

+ PhD in physical sciences, applied mathematics, engineering, or other relevant field; or equivalent experience

+ Experience with uncertainty quantification and/or machine learning

+ Experience with computational science and software development

+ Demonstrated programming or scripting experience (e.g., C/C++, Matlab, or Python)

+ Experience with modeling and simulation tools

Qualifications We Desire:

+ Excellent interpersonal skills

+ Experience using powerful machine learning tools in the physical sciences

+ Experience in performing research as part of a diverse and interdisciplinary team

+ Proven ability to present and publish research findings and make original contributions to engineering science

+ Proven experience in analysis code development for engineering sciences applications

About Our Team:

Sandia/California's research group is a diverse multidisciplinary community of scientists and engineers who specialize in computational modeling of a variety of science and engineering topics. The work mix includes theory and modeling, scientific and high-performance computing, and applied engineering analysis of experiments and mechanical designs. The modeling and simulation group plays two primary roles in science-based engineering at Sandia: (1) developing new computational methods, capabilities and tools to describe chemical and physical systems; and (2) performing computational analysis to predict the design performance of engineered systems in defense, energy, and industry applications.

The Plasma & Reacting Flow Science department 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.

The mission of the Quantitative Modeling & Analysis department is to conduct R&D and systems engineering in computer science and engineering across the technical spectrum from data to decision making. Research is ongoing to enhance predictive modeling in a variety of domains. The department has expertise in computer science, software development, and applied mathematics. Primary research areas include uncertainty quantification, optimization, inference modeling, data assimilation, and algorithm development. Primary application development work focuses on verification, validation and uncertainty quantification of complex problems. We develop tools that address specific analysis steps, as well as integrating those tools in a productive workflow.

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 vacations, 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.

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.


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.

Position Information:

This Limited Term Employee (LTE) position is a temporary position for one year term, which may be renewed at Sandia's discretion up to a maximum of seven years.

Individuals in LTE 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: 682744



  • Engineering
Posted: 2022-04-18 Expires: 2022-07-20

 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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Computational Modeling Researcher (Mid-Career)

Sandia National Laboratories
Livermore, CA 94550

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