Intern, Technical Graduate Year-Round - Thermal Sciences and Engineering, Remote

Job posting number: #7368224 (Ref:Sa698674), posted August 13, 2026.

About the role

The Thermal Sciences and Engineering department has an opportunity for a graduate student year-round intern. The internship spans multiple engineering disciplines, including Aerospace Engineering, Mechanical Engineering, and Computational Science. The selected applicant can be a remote worker located in any U.S. State or District of Columbia. Regular or periodic travel to your assigned work location may be required.

Responsibilities

• Assist the Thermal Sciences and Engineering department with various work projects.
• Conduct computational/modeling simulation in heat transfer, fluid mechanics, particle dynamics/mechanics, or aero sciences.
• Conduct analysis on experimental and computational data.
• Conduct uncertainty quantification and optimization workflows utilizing experimental data.

Requirements

• Earned bachelor's degree.
• Currently attending and enrolled full time in a related accredited graduate program.
• Minimum cumulative GPA of 3.0/4.0.
• Ability to work up to 30 hours per week during the academic year, and up to 40 hours per week during the summer.
• U.S. citizens, legal permanent residents, asylees, or refugees in the U.S.

Qualifications We Desire

• Currently attending and enrolled full time in a related accredited graduate program in mechanical engineering, aerospace engineering, computational science, or a similar technical major.
• Demonstrated successful teamwork, excellent communication skills (oral and written), and consistent demonstration of good behaviors.
• Experience in computational heat transfer analysis including the use of SNL finite element codes and tools.
• Familiarity with processing of experimental data for use in modsim workflows.
• Experience automating analysis workflows using Python.
• Ability to secure and maintain a U.S. security clearance which requires U.S. citizenship.

Pay

At Sandia, interns earn competitive pay rates based on earned credit hours, classification, and degree level. Your pay rate will be determined during the hire process and included in your offer package. View the Intern Pay Rate chart here.

Benefits

• Challenging work with impact contributing to national security and global peace.
• Extraordinary co-workers and access to some of the best tools, equipment, and research facilities.
• Career advancement and enrichment opportunities.
• Flexible work arrangements for many positions, including 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.

About Our Team

The Thermal Sciences and Engineering Department conducts a broad range of technical activities focused on heat transfer, numerical analyses, and related thermal capabilities. Work spans fundamental research and development to engineering analysis of system performance, safety, and control of thermal environments.

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.

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. Employees in New Mexico need to pass a U.S. Air Force background screen for access to Kirtland Air Force Base. Substance abuse, illegal drug use, falsification of information, criminal activity, serious misconduct, or other indicators of untrustworthiness can result in denial or termination of access, impacting employment.

Under federal law, citizens and agents of the People's Republic of China, the Islamic Republic of Iran, the Democratic People's Republic of North Korea, and the Russian Federation are generally prohibited from accessing Sandia National Laboratories unless they are also U.S. citizens. If hired without a clearance and it becomes necessary to obtain one, a pre-processing background review may be conducted prior to a required federal background investigation. Applicants for a DOE security clearance must be U.S. citizens. Dual citizenship may impact the ability to obtain a security clearance.