Lead Mechanical Engineer (Engineer Mechanical 4) - 30650

HII's Mission Technologies division•Alexandria, VA

1d•$122,692 - $190,000•Onsite

About The Position

Mission Technologies, a division of HII, is growing and seeking a Lead Mechanical Engineer to join our team in Alexandria, VA. We build mission‑focused solutions for the defense and intelligence communities, combining advanced technology with hands‑on engineering. Our small, collaborative teams rapidly turn ideas into fielded hardware, making this an ideal environment for engineers who enjoy open‑ended problem solving and seeing their designs come to life. As a Lead Mechanical Engineer, you will support the planning, assessment, design review, modernization, and sustainment of mission‑critical facilities, HVAC systems, and building infrastructure for CONUS and OCONUS customers. You will apply your expertise to develop reliable, resilient mechanical systems that enable secure and high‑performance operations worldwide. This role combines technical depth, creativity, and close collaboration with multidisciplinary teams. Your Impact Strengthen national security by supporting high‑reliability facilities and infrastructure. Take on complex engineering challenges involving secure environments, resilient systems, and mission‑critical operations. Grow your career within a collaborative team supporting projects of increasing scope and impact.

Requirements

9 years relevant experience with a Bachelor’s; 7 years with a Master’s; or 4 years with a PhD/JD.
Active US TS/SCI with Polygraph.
Experience with mechanical CAD tools, engineering documentation, and hands‑on assembly or construction.
Ability to interpret drawings, specifications, calculations, design packages, and technical reports.
Creativity and comfort with open‑ended problem solving.

Nice To Haves

Experience in facilities engineering, HVAC systems, building mechanical/utility infrastructure, or mission‑critical facilities.
Background in site assessments, engineering studies, requirements development, and technical evaluations.
Experience with construction oversight, commissioning, maintenance, and sustainment of mechanical systems.
Experience supporting facility upgrades, recapitalization, and modernization programs.

Responsibilities

Provide mechanical engineering support for mission‑critical facilities, HVAC systems, and utility infrastructure.
Conduct mechanical analyses, feasibility studies, design reviews, and system evaluations.
Develop and review engineering drawings, specifications, calculations, and technical documentation.
Support installation, construction oversight, commissioning, troubleshooting, and sustainment of facility systems.
Prepare documentation for assessments, commissioning, testing, and as‑built conditions.
Contribute to lifecycle planning, modernization strategies, and reliability improvements for mechanical systems in CONUS and OCONUS environments.