Senior Mechanical Engineer

Description

The Mission Solutions Business Area at Leidos is looking for a Mechanical Engineer to join our Reston, VA based team. The successful candidate will work as a member of multi-disciplined government contractor team with a focus on research and development of characterization methodologies of aboveground and underground structures and associated infrastructure and protective design characteristics. Work will be performed in a fast-paced, high-energy environment inside a government facility.

Role & Responsibility :

Use exploitation products, intelligence resources and engineering expertise to produce intelligence to characterize selected facilities

Provide engineering guidance and judgment throughout the characterization process to produce accurate intelligence estimates of standard facility operations (power, HVAC, security, etc.) and equipment

Model different aspects of a facility to include mechanical, electrical, and structural components within industry software packages (AutoCAD, Revit MEP, UTAS, etc.)

Provide mechanical engineering expertise to assist with recommendations of protective HVAC designs for facilities of interest

Provide briefings on R&D findings to both fellow team members and government customers

Support field surveys in a variety of locations / environments to collect ground truth as part of the R&D verification and validation process

Resolve highly complex and multi-dimensional problems requiring consideration of multiple variables that impact multiple aspects of facility design, construction, operations, maintenance, and disaster recovery.

Collaborate in the development of tactics, techniques and procedure improvements in order to innovate and maintain cutting edge capabilities.

Mentor and train junior personnel.

Required Skills, Education, Clearance and Experience :

Candidate must possess an active TS / SCI, or a Top Secret clearance with a current SSBI, and be eligible to obtain a TS / SCI w / CI poly level clearance. US Citizenship is required.

Master's with 15+ years of prior relevant experience or a Doctorate with 13+ of prior relevant experience. Additional considerations given for specific domain experience.

Working knowledge of mechanical (HVAC) and life safety systems associated with critical environments

Ability to evaluate, organize and utilize large datasets from various sources to include ground truth field collections, industry equipment manuals and existing facility models

Ability to make decisions based on incomplete information and communicate any gaps in information along with paths forward

Excellent written and verbal communication skills with the ability to successfully brief and interact with personnel at all levels of experience

Ability to work in a fast-paced, high-energy environment

Preferred Qualifications :

Construction or Facility Management, hard target construction / facility support.

Tunnel construction or mining (includes HVAC and power support)

5+ years of process controls experience Allen Bradley, FactoryTalkView, GE Fanuc, Modicon, Schneider Electric, Siemens, DeltaV, Wonderware, Emerson, etc.

Experience with one or more modeling programs such as Revit MEP, SketchUP. Solidworks, VentSIM, UTAS, etc

Military or defense-related experience and an understanding of operational planning. Knowledge of the Joint Targeting Cycle, Facility Target Development, Facility Vulnerability Analysis, weapons effects, Military Operational Planning or defense industry production process is a strong plus.

Experience with Building Management Systems (BMS), Industrial HVAC, Central Plant Utilities, Industrial Processes, Water / Wastewater, Nuclear Power, Data Centers, Cogen Plants, Combined Cooling, Heating & Power, Cooling towers, chillers, UPS, Power Monitoring.

Cybersecurity experience - Monitoring advanced threats and managing security services.

Modeling and Simulation support. Augmented Reality / Virtual Reality experience creation a strong plus.

Production (Manufacturing, Fabrication or Assembly) or warehouse design, workflow development or management.

Software development skills preferred - python, java, etc.

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 25, 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 $148,850.00 - $269,075.00

The Leidos pay range for this job level is a general guideline onlyand 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.