Lead Mechanical Engineer (Engineer Mechanical 4) - 30650

Requisition Number: 30650 Required Travel: 0 - 10%Employment Type: Full Time/Salaried/ExemptAnticipated Salary Range: $122,692.00 - $190,000.00 Security Clearance: TS/SCI Level of Experience: Senior This opportunity resides with Warfare Systems (WS), a business group within HII’s Mission Technologies division. Warfare Systems comprises cyber and mission IT; electronic warfare; and C5ISR systems.HII works within our nation’s intelligence and cyber operations communities to defend our interests in cyberspace and anticipate emerging threats. Our capabilities in cybersecurity, network architecture, reverse engineering, software and hardware development uniquely enable us to support sensitive missions for the U.S. military and federal agency partners.Meet HII’s Mission Technologies DivisionOur team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense – the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that’s right for you. Apply today. We look forward to meeting you.To learn more about Mission Technologies, click here for a short video: Job DescriptionMission 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 ImpactStrengthen 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.Essential Job ResponsibilitiesProvide 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.Minimum Qualifications9 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.Preferred RequirementsExperience 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.Physical RequirementsMay require working in an office, industrial, shipboard, or laboratory environment. Capable of climbing ladders and tolerating confined spaces and extreme temperature variances.HII is more than a job - it’s an opportunity to build a new future. We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.Why HIIWe build the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.Recognized as one of America’s top large company employers, we are a values and ethics driven organization that puts people’s safety and well-being first. Regardless of your role or where you serve, at HII, you’ll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career.Together we are working to ensure a future where everyone can be free and thrive.All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law.Do You Need Assistance? If you need a reasonable accommodation for any part of the employment process, please send an e-mail to View email address on click.appcast.io and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case-by-case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address. Additionally, you may also call View phone number on click.appcast.io for assistance. Press #3 for HII Mission Technologies.