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Computational Thermal Analyst (Early/Mid-Career)

Livermore, CA

Job ID: 688390

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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.

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.

Salary Range:

$100,900 - $195,400 *Salary range is estimated, and actual salary will be determined after consideration of the selected candidate¿s experience and qualifications, and application of any approved geographic salary differential.

What Your Job Will Be Like:

We are seeking a technical staff member (R&D S&E Computer Science) to join our diverse and collaborative team! The Thermal/Fluid Sciences and Engineering department uses pioneering analytical and computational simulation techniques to perform first-of-a-kind engineering system analysis and thermal science research with a direct impact on national security. We seek individuals with educational backgrounds and/or professional experience in thermal fluid science (e.g., heat transfer, fluid dynamics) and computational simulation applications or development. The successful candidate will use and potentially develop brand-new tools and models to perform computational simulations in support of R&D projects across our national security, nuclear deterrence, and alternative/renewable energy mission applications.

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

  • Perform thermal, fluid dynamics and/or reacting material (e.g., solid decomposition, gas phase combustion, fire) research, development, modeling, and simulation to support a variety of projects for internal (Sandia) and external customers

  • Use engineering analysis principles and computational methods to support the design, qualification, and fielding of high consequence engineered systems for national security missions

  • Use and/or develop powerful tools and models to conduct computational simulations (e.g., fluid dynamics, turbulent flow, multiphase flow, conductive/convective/radiative transport, thermal-mechanical, reacting flow, porous media flow and heat transfer, and thermal decomposition)

  • Apply and develop uncertainty quantification techniques and assess model credibility through the application of verification & validation principles

  • Engage with code and model development teams to develop and implement novel models and capabilities for high performance computing (HPC) algorithms and environments

  • Work closely with teams of code/model developers, analysts, and experimentalists to develop and implement novel models and capabilities for HPC algorithms and provide validated simulation results for complex and challenging R&D problems

  • Collaborate and interact closely with a diverse, geographically-dispersed team, including engineers and other researchers and analysts across the laboratory at both the California and New Mexico sites

Applicants on this requisition may be interviewed by multiple organizations at Sandia National Laboratories.

Qualifications We Require:

  • Master's degree in mechanical, chemical, aerospace engineering, or closely related field plus one or more years of experience; or equivalent

  • Strong educational background or professional experience in ONE or more of the following areas: heat transfer (including conduction, convection and radiation), fluid dynamics, reacting materials/chemistry/combustion

  • Experience with modeling and simulation tools

  • Ability to acquire and maintain a US DOE Q security clearance

Qualifications We Desire:

  • PhD degree in mechanical, chemical, aerospace engineering or closely related field (applied math, etc.); or equivalent professional experience

  • Demonstrated ability to learn and apply new technical areas

  • Demonstrated ability to work collaboratively in a geographically-dispersed, multi-disciplinary team environment

  • Experience with HPC environments

  • Experience with analysis or code development for engineering sciences applications

  • Programming or scripting proficiency (e.g., C++, python, Fortran, C)

  • Experience with statistical methods and/or uncertainty quantification techniques

  • Ability to present and/or publish analysis results and research findings

  • Excellent verbal and written communication skills

About Our Team:

Sandia/California's Thermal/Fluid Science and Engineering Department is a diverse multidisciplinary community of engineers and researchers who specialize in fluid mechanics and heat and mass transfer. The work mix in the group includes theory and modeling, scientific and high-performance computing, and applied engineering analysis of experiments and mechanical designs. The group plays two primary roles in science-based engineering at Sandia:

  • developing new computational methods, capabilities and tools to describe fluid mechanics, heat transfer, and thermal response;

  • performing computational analysis to predict the design performance of engineered systems in defense, energy, and industry applications. Recent activities and R&D areas within the group include: heat transfer and fluid dynamics modeling and analysis for complex multi-material systems, porous media reacting flow, multi-phase flow, turbulent heat transfer, fire and combustion, hydrogen storage and safety technology, wind energy modeling and technology development, geothermal energy technology, contributions to emerging capability and development of the Sandia's climate change initiatives and strategy, and applied uncertainty quantification and verification and validation for all of these application areas.

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:*These benefits vary by job classification.

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.


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.

Job ID: 688390

Apply Now


  • Worklife Balance
  • Flexible Work Schedules
  • Generous Paid Time Off
  • Exceptional 401K Savings Plan
  • Medical/Dental/Vision Insurance
  • Wellness Programs
  • On-site Amenities
  • Vacation Buy Plan
  • Telecommuting Arrangements*

*with management approval

Life in California

  • Close proximity to first-tier universities, Silicon Valley companies, and other top research laboratories and facilitiesM
  • Access to California’s finest public and private schoolsM
  • VineyardsM
  • BeachesM
  • State ParksM
  • Sports – Nearby major league franchisesM
  • Art havenM
  • Proximity to SF Bay AreaM

Learn more about Life in Livermore, California

Sandia invites you to review the Equal Employment Opportunity posters which include EEO is the Law, EEO is the Law Poster Supplement, and Pay Transparency Nondiscrimination Provision.

Sandia is a drug-free workplace. As a national laboratory funded by a U.S. government agency, we are subject to federal laws regarding illegal drug use. Illegal use of a controlled substance, including marijuana even in places where it does not violate state law, may impact your ability to obtain and/or maintain a Department of Energy security clearance, and may result in the withdrawal of an employment offer or termination of employment.

Sandia is committed to Equal Employment Opportunity and providing reasonable accommodation in its application process for qualified individuals with disabilities. If you have difficulty using our online system due to a disability and need special assistance or accommodation, please send an email with your request to the Job Accommodation Specialist in (NM) . Determinations on requests for reasonable accommodation are made on a case-by-case basis.