Description

Job Description

We are seeking a highly experienced Senior Mechanical Engineer to lead the design, maintenance, and configuration management of site building mechanical systems. The ideal candidate will bring strong technical knowledge, creativity, and leadership to site projects involving air handlers, chillers, boilers, pumping systems, and many other mechanical systems. Candidate should have experience managing and troubleshooting mechanical and control systems.

Primary Responsibilities:

• Lead mechanical design and development efforts from concept through production.
• Create and review AutoCad design documents and submittals.
• Collaborate with cross-functional teams (electrical, systems, software, manufacturing) to ensure mechanical designs meet all functional and environmental requirements.
• Conduct analyses to validate proposed mechanical designs will function in operational environments.
• Develop and maintain site documentation.
• Troubleshoot design and maintenance issues, recommending and implementing corrective actions. Prepare AutoCAD construction drawings and prepare site-specific specifications.

Basic Qualifications

• TS/SCI with CI Poly
• Requires Bachelors degree in Mechanical Engineering and 8-12 years of prior relevant experience or a Masters degree in Mechanical Engineering with 6-10 years of prior relevant experience.
• Must be a Registered Professional Engineer in good standings in the United States or have the ability to obtain a PE in a reasonable time period.
• At least 8 years of experience with mechanical systems design including HVAC and plumbing systems with commercial, industrial and/or government facilities
• Must have current and relevant knowledge of building and energy codes and standards in order to be able to perform heating and cooling load calculations, ductwork sizing and layout, piping calculations and distribution, sections/elevations, and equipment sizing and selection.
• Demonstrated expertise in CAD tools such as AutoCad.
• Proven track record of developing mechanical systems for commercial HVAC systems. Ability to discuss project related items with stakeholders, contractors, and related authorities.
• FMCS systems familiarity.

Preferred Qualifications

• Experience troubleshooting and fixing controls systems.

EC-DAS

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:
September 22, 2025

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 $104,650.00 - $189,175.00

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.