Facilities Mechanical Engineer

Leidos • Chantilly, VA

4d

About The Position

Senior Mechanical Engineer Leidos is seeking a seasoned and innovative Senior Mechanical Engineer to lead the design, maintenance, and configuration management of complex building mechanical systems across a secure site. This role demands deep technical expertise, strategic vision, and hands-on leadership in systems such as air handlers, chillers, boilers, and pumping infrastructure. The ideal candidate thrives in multidisciplinary environments and brings a proven ability to troubleshoot, optimize, and elevate mechanical and control systems performance. This role may be eligible for a sign-on incentive, which could include additional PTO or a monetary bonus.

Requirements

• Current Top Secret SCI security clearance and the ability to pass a polygraph.
• Bachelor’s in Mechanical Engineering with 8–12 years of experience, or Master’s with 6–10 years.
• Registered Professional Engineer (PE) in good standing or ability to obtain PE within a reasonable time frame.
• Minimum 8 years of experience designing HVAC and plumbing systems for commercial, industrial, or government facilities.
• Strong command of building and energy codes; capable of performing load calculations, duct and piping layouts, and equipment sizing.
• Expertise in AutoCAD and familiarity with EMCS/FMCS systems .
• Demonstrated ability to resolve complex, multidisciplinary technical challenges.
• Exceptional communication skills; able to engage senior leadership and stakeholders on technical strategy and execution.
• Proven success in developing and implementing commercial HVAC systems.

Nice To Haves

• Current Polygraph
• Recognized Subject Matter Expert (SME) in mechanical systems.
• PE certification.
• Field experience in mechanical construction, systems integration, and testing.
• Proficiency in project management: scheduling, budgeting, and resource planning.

Responsibilities

• Lead end-to-end mechanical design from concept through production, ensuring robust, efficient, and compliant systems.
• Partner with Operations & Maintenance (O&M) teams to drive proactive and responsive maintenance strategies.
• Collaborate cross-functionally with electrical, systems, and architectural teams to ensure integrated, mission-ready designs.
• Perform rigorous analyses to validate mechanical performance in operational environments.
• Author and review technical documentation , including engineering reports, design packages, and maintenance policies.
• Oversee construction and renovation efforts , ensuring mechanical scope aligns with strategic goals, budgets, and timelines.
• Establish and refine facility standards , maintenance protocols, and site-specific operating procedures.
• Troubleshoot complex system issues , recommending and implementing corrective actions with precision.
• Produce detailed AutoCAD drawings , submittals, and specifications tailored to site requirements.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 11-50 employees