**Description**

The Leidos Analysis Solutions business area is seeking a **Senior Nuclear Engineer** to support critical national security missions in Reston, Virginia. In this role, you will apply advanced nuclear engineering principles in support of counterproliferation efforts and nuclear survivability (hardness) system design.

Responsibilities include conducting technical assessments of foreign nuclear weapons infrastructure to reverse-engineer protective hardening measures and identify facility, process, and supply chain vulnerabilities. This unique role combines rigorous computational physics, engineering analysis, and all-source intelligence tradecraft to support the protection of national security infrastructure.

The successful candidate will join a government-contractor team focused on the reverse engineering of above-ground and underground facilities, including their associated processes, systems, and equipment. You will develop innovative solutio...