This Senior Design Engineer role supports the Plutonium Facilities Engineering Rapid Response Team at Los Alamos National Laboratory, focusing on electrical or civil/structural engineering disciplines. The position involves performing complex engineering analyses, preparing design packages, and providing construction support for nuclear and environmental facilities. Candidates will apply extensive knowledge of DOE and industry codes to ensure safety and compliance while potentially leading projects and mentoring others. The role appeals to experienced engineers seeking to contribute to critical clean energy and national security missions within a collaborative, quality-focused team. Successful candidates must hold a DOE Q clearance and US citizenship. The position is based on-site in Los Alamos, New Mexico.