A Nuclear Weapons Engineer designs, develops, maintains, and evaluates nuclear weapons and related systems. They work to ensure the safety, reliability, and effectiveness of nuclear arsenals while adhering to national security protocols and international treaties. These engineers may specialize in areas such as weapon physics, materials science, or explosives engineering. Their work often involves simulations, laboratory experiments, and collaboration with government agencies. Due to the sensitive nature of their work, they must obtain security clearances and follow strict regulations.