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Leidos is seeking a Mechanical Engineer to design HVAC, plumbing, fire protection, and mechanical utility systems for government and institutional facilities. You will prepare drawings, specs, equipment lists, and calculations for public procurement and long‑term operation.
Requirements include a BS in Mechanical Engineering (ABET‑accredited), 8+ years of experience (or 6+ with a Masters), PE license, and the ability to obtain Public Trust.
Design and engineer HVAC, plumbing, fire protection, and mechanical utility systems for government and institutional facilities in accordance with public-sector standards and operational requirements Prepare construction drawings, technical specifications, equipment schedules, and engineering calculations suitable for public procurement, competitive bidding, and long‑term facility operation Coordinate with architectural, civil, structural, electrical, and controls disciplines to integrate mechanical systems within complex, multi‑discipline project environments Ensure compliance with applicable codes and standards such as ASHRAE, NFPA, ICC, energy codes, and agency‑specific design criteria Perform load calculations, energy modeling, ventilation analysis, and system sizing to support efficient, resilient, and maintainable designs. Perform engineering calculations (loads, stresses, flow, heat transfer). Use specialized mechanical and civil design software (e.g., AutoCAD, Revit MEP, Civil 3D for utility coordination, Carrier HAP/Trace, eQUEST, or similar tools) to develop models and analyses Utilize cost estimating and quantity takeoff software (e.g., Bluebeam, RSMeans, Sage Estimating, or comparable platforms) to support budgeting, value engineering, and public funding approvals Support construction administration through submittal reviews, RFIs, site visits, commissioning coordination, and verification of installation conformance with design intent Fire protection (sprinklers, smoke control, etc) Mechanical Engineer
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.
October 16, 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 $107,900.00 - $195,050.00 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.
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.
Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to spam.leidos@leidos.com.
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.