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Junior Mechanical Engineer - Careers at Leidos

Leidos

Junior Mechanical Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos as a Junior Mechanical Engineer

Leidos Multi-Domain Solutions (MDS) is seeking a highly motivated Junior Mechanical Engineer to support planning, design, and analysis of mechanical systems—primarily HVAC—for mission-critical government, commercial, and institutional facilities in Springfield, VA. Work under senior mentorship on system layouts, equipment selection, energy modeling, and construction documentation. Ideal for engineers passionate about energy-efficient, code-compliant designs in 24/7 environments.

Primary Responsibilities

  • Design and layout HVAC systems including ductwork, piping, ventilation, and equipment for high-reliability settings.
  • Create and maintain construction drawings/specs using AutoCAD, Revit MEP.
  • Conduct load calculations, energy modeling, sizing with Trace 700, HAP, eQUEST.
  • Perform field surveys, site investigations, facility assessments.
  • Assist commissioning, testing, balancing; review submittals, RFIs; support construction admin.
  • Ensure adherence to ASHRAE, NFPA, IBC, IMC, LEED standards.
  • Manage documentation: reports, memos, as-builts.
  • Experience Building Management Systems (BMS) for HVAC/lighting/life safety.
  • Collaborate with electrical, architectural, structural teams.

Basic Qualifications

  • Active TS/SCI with Polygraph clearance.
  • Bachelor’s in Mechanical Engineering or related; 2-4 years experience (or <2 with Master’s).
  • Knowledge of static/dynamic analysis for mechanical systems.
  • Proficiency in SolidWorks, AutoCAD; design specs, dimensioning standards.
  • Experience in prototype fabrication, testing, feasibility studies.
  • Strong collaboration, communication, organization, attention to detail.

Preferred Qualifications

  • Master’s in Mechanical Engineering.
  • SolidWorks Simulation, ANSYS, FEA/thermal tools.
  • Prototyping, iterative development experience.
  • Independent contributions to complex projects.
  • Project management tools, DFM practices.
  • Regulated environments (aerospace, defense).

Pay Range: $69,550 - $125,725 USD/year. Leidos values innovators who challenge norms. Original posting: January 9, 2026. U.S. positions open at least 3 days.

Locations

  • Springfield, Virginia, United States

Salary

69,550 - 125,725 USD / yearly

Estimated Salary Rangehigh confidence

69,550 - 125,725 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • HVAC system designintermediate
  • AutoCADintermediate
  • Revit MEPintermediate
  • Energy modeling (Trace 700, HAP, eQUEST)intermediate
  • Static and dynamic analysisintermediate
  • SolidWorksintermediate
  • Thermal analysisintermediate
  • FEA/ANSYSintermediate
  • Building Management Systems (BMS)intermediate
  • ASHRAE/NFPA/IBC/IMC/LEED complianceintermediate

Required Qualifications

  • Active TS/SCI with Polygraph (experience)
  • Bachelor’s degree in Mechanical Engineering or related field (experience)
  • 2–4 years relevant experience (or <2 with Master’s) (experience)
  • Proficiency in CAD software (SolidWorks, AutoCAD) (experience)
  • Strong collaboration and communication skills (experience)
  • Familiarity with mechanical engineering fundamentals (thermal analysis, hardware design) (experience)

Responsibilities

  • Assist in HVAC system design, ductwork, piping, and equipment selection for mission-critical environments
  • Prepare construction drawings and specifications using AutoCAD/Revit MEP
  • Perform mechanical load calculations, energy modeling, and system sizing
  • Conduct field surveys, site investigations, and condition assessments
  • Support commissioning, testing, balancing, submittal reviews, RFIs, and construction administration
  • Ensure code compliance (ASHRAE, NFPA, IBC, IMC, LEED)
  • Collaborate with cross-functional teams on BMS and multidisciplinary projects

Benefits

  • general: Mentorship from senior engineers
  • general: Hands-on experience in mission-critical HVAC for government facilities
  • general: Professional growth in energy-efficient design
  • general: Exposure to prototype fabrication and testing
  • general: Competitive pay with internal equity considerations
  • general: Opportunities in defense and regulated environments

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Leidos logo

Junior Mechanical Engineer - Careers at Leidos

Leidos

Junior Mechanical Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos as a Junior Mechanical Engineer

Leidos Multi-Domain Solutions (MDS) is seeking a highly motivated Junior Mechanical Engineer to support planning, design, and analysis of mechanical systems—primarily HVAC—for mission-critical government, commercial, and institutional facilities in Springfield, VA. Work under senior mentorship on system layouts, equipment selection, energy modeling, and construction documentation. Ideal for engineers passionate about energy-efficient, code-compliant designs in 24/7 environments.

Primary Responsibilities

  • Design and layout HVAC systems including ductwork, piping, ventilation, and equipment for high-reliability settings.
  • Create and maintain construction drawings/specs using AutoCAD, Revit MEP.
  • Conduct load calculations, energy modeling, sizing with Trace 700, HAP, eQUEST.
  • Perform field surveys, site investigations, facility assessments.
  • Assist commissioning, testing, balancing; review submittals, RFIs; support construction admin.
  • Ensure adherence to ASHRAE, NFPA, IBC, IMC, LEED standards.
  • Manage documentation: reports, memos, as-builts.
  • Experience Building Management Systems (BMS) for HVAC/lighting/life safety.
  • Collaborate with electrical, architectural, structural teams.

Basic Qualifications

  • Active TS/SCI with Polygraph clearance.
  • Bachelor’s in Mechanical Engineering or related; 2-4 years experience (or <2 with Master’s).
  • Knowledge of static/dynamic analysis for mechanical systems.
  • Proficiency in SolidWorks, AutoCAD; design specs, dimensioning standards.
  • Experience in prototype fabrication, testing, feasibility studies.
  • Strong collaboration, communication, organization, attention to detail.

Preferred Qualifications

  • Master’s in Mechanical Engineering.
  • SolidWorks Simulation, ANSYS, FEA/thermal tools.
  • Prototyping, iterative development experience.
  • Independent contributions to complex projects.
  • Project management tools, DFM practices.
  • Regulated environments (aerospace, defense).

Pay Range: $69,550 - $125,725 USD/year. Leidos values innovators who challenge norms. Original posting: January 9, 2026. U.S. positions open at least 3 days.

Locations

  • Springfield, Virginia, United States

Salary

69,550 - 125,725 USD / yearly

Estimated Salary Rangehigh confidence

69,550 - 125,725 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • HVAC system designintermediate
  • AutoCADintermediate
  • Revit MEPintermediate
  • Energy modeling (Trace 700, HAP, eQUEST)intermediate
  • Static and dynamic analysisintermediate
  • SolidWorksintermediate
  • Thermal analysisintermediate
  • FEA/ANSYSintermediate
  • Building Management Systems (BMS)intermediate
  • ASHRAE/NFPA/IBC/IMC/LEED complianceintermediate

Required Qualifications

  • Active TS/SCI with Polygraph (experience)
  • Bachelor’s degree in Mechanical Engineering or related field (experience)
  • 2–4 years relevant experience (or <2 with Master’s) (experience)
  • Proficiency in CAD software (SolidWorks, AutoCAD) (experience)
  • Strong collaboration and communication skills (experience)
  • Familiarity with mechanical engineering fundamentals (thermal analysis, hardware design) (experience)

Responsibilities

  • Assist in HVAC system design, ductwork, piping, and equipment selection for mission-critical environments
  • Prepare construction drawings and specifications using AutoCAD/Revit MEP
  • Perform mechanical load calculations, energy modeling, and system sizing
  • Conduct field surveys, site investigations, and condition assessments
  • Support commissioning, testing, balancing, submittal reviews, RFIs, and construction administration
  • Ensure code compliance (ASHRAE, NFPA, IBC, IMC, LEED)
  • Collaborate with cross-functional teams on BMS and multidisciplinary projects

Benefits

  • general: Mentorship from senior engineers
  • general: Hands-on experience in mission-critical HVAC for government facilities
  • general: Professional growth in energy-efficient design
  • general: Exposure to prototype fabrication and testing
  • general: Competitive pay with internal equity considerations
  • general: Opportunities in defense and regulated environments

Target Your Resume for "Junior Mechanical Engineer - Careers at Leidos" , Leidos

Get personalized recommendations to optimize your resume specifically for Junior Mechanical Engineer - Careers at Leidos. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Junior Mechanical Engineer - Careers at Leidos" , Leidos

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Jobs in Springfield, VALeidos CareersHiring in VirginiaEngineering Jobs United StatesGovernment Contractor RolesEngineeringInformation TechnologySecurity

Answer 10 quick questions to check your fit for Junior Mechanical Engineer - Careers at Leidos @ Leidos.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.