Sr. Mechanical Engineer

e 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 Polygraph

• 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. Additional years of experience can be considered in lieu of degree.

• Minimum of 8 years of experience in mechanical systems design, including HVAC and plumbing, for commercial, industrial, and/or government facilities

• Strong working knowledge of applicable building codes, energy standards, and industry regulations

• Proven ability to perform heating and cooling load calculations, ductwork sizing and layout, piping system design and distribution, 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.

• Active Professional Engineer (PE) license or the ability to obtain licensure within one year of hire

Preferred Qualifications

• Experience troubleshooting and fixing controls systems.

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 29, 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.