A three-year postdoctoral fellowship at Sandia National Laboratories for exceptional early-career researchers who propose and lead their own project in national security science and engineering, spanning physics, engineering, computer science and materials science. The award carries a salary of $123,300 ($139,600 in California) plus full benefits for three years and an annual budget of up to $100,000 for research equipment, additional personnel and travel. Fellows are based at Sandia's principal sites in New Mexico and California. Applications close at 5 p.m. Mountain Time on October 1, 2026, with full proposals due November 17, 2026.