Junior Mechanical Engineer at Leidos

Chantilly, Virginia, United States -

Full Time

Start Date

Immediate

Expiry Date

25 Jan, 26

Salary

122200.0

Posted On

27 Oct, 25

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

HVAC, AutoCAD, Revit MEP, Energy Modeling, System Load Calculations, Commissioning, Testing, Balancing, Thermal Analysis, Hardware Design, Product Development, Communication Skills, Organizational Skills, Detail Orientation, Prototyping, Project Management

Industry

Defense and Space Manufacturing

Description

Mechanical Engineer – Mission-Critical Facilities Design Leidos is seeking a driven and detail-oriented Junior level Mechanical Engineer to support the planning, design, and analysis of mechanical systems—primarily Heating, Ventilation, and Air Conditioning (HVAC)—for secure, mission-critical operations across government, commercial, and institutional facilities. This is a growth-focused role where you’ll work alongside senior engineers to develop high-performance, energy-efficient, and code-compliant systems that support 24/7 operations. If you’re passionate about mechanical engineering, eager to learn through mentorship, and ready to contribute to projects that matter, we want to hear from you. What You’ll Do Assist in the design and layout of HVAC systems, including ductwork, piping, ventilation, and equipment selection for high-availability environments. Prepare and maintain construction drawings and specifications using AutoCAD, Revit MEP, or similar tools. Support system load calculations, energy modeling, and equipment sizing using tools like Trace 700, HAP, or eQUEST. Participate in field surveys, site investigations, and facility condition assessments. Assist with commissioning, testing, and balancing to ensure optimal system performance. Review submittals, respond to RFIs, and support construction administration activities. Ensure all designs meet applicable codes and standards (ASHRAE, NFPA, IBC, IMC, LEED). Maintain organized documentation including technical memos, reports, and as-built drawings. Gain hands-on experience with Building Management Systems (BMS) for centralized control of HVAC, lighting, and life safety systems. Collaborate with electrical, architectural, and structural teams to deliver integrated solutions. Basic Qualifications Current Top Secret SCI security clearance and the ability to pass a polygraph. Bachelor’s degree in Mechanical Engineering or related field 2–4 years of relevant experience with a Bachelor’s, or

Responsibilities

Assist in the design and layout of HVAC systems for mission-critical facilities. Collaborate with senior engineers to ensure designs meet applicable codes and standards.