Must have an active DOE Q clearance. Active, meaning the individual granted a clearance is briefed and currently occupies a position for which the clearance is required.

Leidos is seeking a Lead Project Engineer to support the National Nuclear Security Administration (NNSA), Office of Defense Programs. These positions support Federal Program Managers responsible for nuclear weapons production integration, stockpile sustainment, and modernization programs across the Nuclear Security Enterprise.

The selected candidate will serve as a senior technical advisor, applying enterprise-level engineering and analytical expertise to support one or more mission areas, including:

• NA-121 – Stockpile Production Integration (production strategy, capacity, and execution)
• NA-122 – Stockpile Sustainment (lifecycle performance, reliability, and aging systems)
• NA-125 – Office of Stockpile Modernization (development, integration, and transition to production)

This role requires the ability to integrate complex technical and programmatic data across multiple sites, programs, and organizations, shape program strategy, and influence decision-making at the federal leadership level. The role operates at the enterprise level, requiring insight into cross-program dependencies, execution risks, and strategic priorities across the Nuclear Security Enterprise. You will engage regularly with NNSA headquarters staff, site offices, national laboratories, production agencies, systems engineering teams, and senior DoD stakeholders to support high-visibility program execution and coordination.

This is a full-time contractor-support position requiring on-site support at NNSA offices in Albuquerque, NM, with periodic travel requirements.

Primary Responsibilities:

• Lead enterprise-level engineering analysis supporting program strategy, integration, and execution across production, sustainment, and modernization portfolios.
• Advise Federal Program Managers on technical maturity, production capacity, lifecycle performance, and integration risk posture.
• Evaluate cross-program dependencies and impacts affecting development, qualification, production, and delivery across the enterprise.
• Assess impacts of technical, programmatic, and policy decisions on program execution and mission delivery.
• Lead responses to complex data calls, scenario analyses, and senior leadership inquiries.
• Drive coordination across NNSA, national laboratories, production agencies, systems engineering teams, and DoD stakeholders to resolve complex program challenges.
• Develop executive-level briefings and decision-support materials for senior federal leadership.
• Identify systemic risks and cross-program impacts and recommend mitigation strategies.
• Oversee portfolio-level performance tracking, trend analysis, and risk identification across assigned mission areas.
• Support high-visibility program reviews, portfolio assessments, and strategic planning activities across Defense Programs.

Requirements:

• Active DOE Q clearance.
• Master’s degree in Engineering or related STEM field with 15+ years of experience or a Doctorate with 13+ years of experience.
• Experience supporting engineering, research, development, production, sustainment, or modernization programs within DOE/NNSA, DoD, national laboratories, or production agencies.
• Demonstrated ability to apply analytical skills to inform technical or programmatic decisions.
• Understanding of Nuclear Security Enterprise roles and responsibilities, including design and production agency interfaces.
• Experience working within federal, defense, national laboratory, or similarly complex technical environments.
• Strong organizational skills with high attention to accuracy and detail.
• Ability to operate independently at a senior level and influence decision-making in a high-visibility environment.
• Proficiency in Microsoft Office Suite (Word, Excel, PowerPoint) and Microsoft Teams.
• Strong written and verbal communication skills, including executive-level engagement.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

March 19, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $154,050.00 - $278,475.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.