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Postdoctoral Appointee - Computational Geoscientist (Hybrid)

Sandia National Laboratories

Albuquerque, USA

Job posting number: #7240256 (Ref:Sa693266)

Posted: June 17, 2024

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 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.

What Your Job Will Be Like:

Are you ready to put your knowledge, skills, and experience to work crafting creative solutions to challenging problems that impact the nation? We are seeking a Postdoctoral Appointee to join us in building capabilities for and confidence in deep geologic disposal of spent nuclear fuel and high-level radioactive waste. You will be part of a multidisciplinary team developing models, methods, and software for safety assessment of deep geologic disposal systems and for evaluation of other subsurface systems contributing to energy and climate solutions. Join this dynamic team and embark on a rewarding career.

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

  • Develop, verify, and validate models of the subsurface thermal, hydrological, mechanical, and chemical processes affecting system performance.
  • Develop creative software solutions for multi-scale modeling and multi-physics coupling.
  • Address uncertainty arising from modeling assumptions, uncertain inputs, and stochastic variation.
  • Develop or apply numerical simulation capability in PFLOTRAN.
  • Develop Python scripts for pre- and post-processing, visualization, and analysis.
  • Conduct simulations and analyses in a high-performance computing environment.
  • Develop a professional network and collaborate across a variety of disciplines.
  • Contribute to peer-reviewed publications, presentations, and technical reports to disseminate findings and advancements.
  • Travel to conferences and project meetings.

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.

Qualifications We Require:

  • PhD in a relevant science, math, or engineering field such as Geoscience, Computational Science, Applied Mathematics, or Environmental, Civil, or Petroleum Engineering.
  • Demonstrated experience in developing or using software for numerical simulation of physical processes.
  • Ability to obtain and maintain a DOE L security clearance.

Qualifications We Desire:

  • Experience with numerical simulation of flow and reactive transport in porous media using simulators such as PFLOTRAN, CRUNCH-FLOW, FEHM, TOUGH-REACT, etc.
  • Experience conducting simulation and analysis in a Linux or Unix environment.
  • Proficiency in scientific programming and/or scripting for scientific analysis using languages such as Python, C, C++, Fortran 2003, etc.
  • Demonstrated ability to integrate information, datasets, and methods from multiple disciplines such as geohydrology, geochemistry, geomechanics, statistics and numerical methods.
  • Proven ability to succeed through teaming with others.
  • Excellent communication skills and a demonstrated ability to develop technical ideas and results and present them in oral and written form.
  • Ability to work in an environment with changing priorities.

About Our Team:

The Applied Systems Analysis and Research Department delivers simulation and analysis capabilities for probabilistic performance assessment of deep geologic disposal systems for spent nuclear fuel and radioactive waste. We partner with colleagues at Sandia, other national labs, and universities to implement and demonstrate innovative solutions for multiphysics, multiscale modeling, uncertainty quantification, and sensitivity analysis. Our capabilities are also applied to simulation and analysis of subsurface systems in Sandia’s energy, climate, and nonproliferation program spaces.

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.

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 L-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 the DOE, resulting in the inability to perform the duties assigned and subsequent termination of employment.


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: 693266

Job Family: 92

Regular/Temporary Position: T

Full/Part-Time Status: F

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

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Job posting number:#7240256 (Ref:Sa693266)
Application Deadline:Open Until Filled
Employer Location:Sandia National Laboratories
Albuquerque,New Mexico
United States
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