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10,000+
"validation engineer"
jobs
in
National Security
in last 30 days
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8,782
"validation engineer"
jobs
in
National Security
in last 30 days
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Date
Last 30 days
Mechanical Engineer
APPLY
National Gallery Of Art
Natick, MA
L5 Senior
September 18th, 2026
Mechanical Engineers
Engineering Services
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NAVAL ARCHITECT
APPLY
National Gallery Of Art
New London, CT
L6 Lead
September 18th, 2026
Marine Engineers and Naval Architects
Engineering Services
Show all >
ENGINEER-MECHANICAL, ELECTRICAL, ACOUSTIC
APPLY
Celeris Systems
Keyport, NJ
L5 Senior
September 2nd, 2026
Mechanical Engineers
Engineering Services
Show all >
TS/SCI CAD Systems Engineer - Knowledge Management
APPLY
Global C2 Integration Technologies
Reston, VA
L5 Senior
September 2nd, 2026
Computer Systems Engineers/Architects
Engineering Services
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Systems Engineer III (Secret Clearance Required)
APPLY
Socket
Crane, IN
L6 Lead
September 2nd, 2026
Computer Systems Engineers/Architects
Engineering Services
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Secret-Cleared Naval Systems Engineer
APPLY
CACI International
King George, VA
L6 Lead
September 2nd, 2026
Computer Systems Engineers/Architects
Engineering Services
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Journeyman MBSE Systems Engineer - PMA 265
APPLY
Synectic Solutions
Hyattsville, MD
L5 Senior
September 2nd, 2026
Computer Systems Engineers/Architects
Engineering Services
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Mechanical Engineer MILCON Design, Secret Clearance
APPLY
Sustainable World
Brooklyn, NY
L6 Lead
September 2nd, 2026
Mechanical Engineers
Engineering Services
Show all >
Mechanical Engineer - Test Systems & Field Engineering
APPLY
Trax International
Yuma, AZ
L6 Lead
September 2nd, 2026
Mechanical Engineers
Engineering Services
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MBSE Systems Engineer (Journeyman) - Naval Fighter Programs
APPLY
Synectic Solutions
Brooklyn, NY
L3 Junior
September 2nd, 2026
Aerospace Engineers
Engineering Services
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Senior Structural Engineer - DoD Secret, Onsite Melbourne
APPLY
Tasc Technical Services
Melbourne, FL
L5 Senior
September 2nd, 2026
Mechanical Engineers
Engineering Services
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Senior Systems Engineer - DoD Test & Evaluation Lead
APPLY
Hart Technologies
Dahlgren, VA
L6 Lead
September 2nd, 2026
Engineers, All Other
Engineering Services
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Systems Engineer (Anti-Tamper)-Senior
APPLY
American Electronic Warfare Associates
Hyattsville, MD
L6 Lead
September 2nd, 2026
Engineers, All Other
Engineering Services
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Civil Engineer: DoD Facilities & Infrastructure Lead
APPLY
Csengineering
Colorado Springs, CO
L6 Lead
September 2nd, 2026
Civil Engineers
Engineering Services
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Staff Mechanical Engineer - Federal Base Projects
APPLY
ASRC Federal
Enid, OK
L6 Lead
September 2nd, 2026
Mechanical Engineers
Engineering Services
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Lead Systems Engineer DoD MBSE & Proposals
APPLY
Lockheed Martin
Grand Prairie, TX
L6 Lead
September 2nd, 2026
Project Management Specialists
Engineering Services
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Lead Mechanical Engineer, DoD Systems (Secret Clearance)
APPLY
W R Systems
Brooklyn, NY
L6 Lead
September 2nd, 2026
Mechanical Engineers
Engineering Services
Show all >
RF Systems Engineer II Python, EMI, TS/SCI
APPLY
Captivation Software
Hyattsville, MD
L5 Senior
September 2nd, 2026
Electronics Engineers, Except Computer
Engineering Services
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SUPERVISORY INTERDISCIPLINARY ENGINEER ARCHITECT (GENERAL ENGINEER/ ARCHITECT)
APPLY
Navair
Patuxent River, MD
L6 Lead
September 2nd, 2026
Architectural and Engineering Managers
Engineering Services
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Senior Electrical Engineer (WCCA/Radiation Testing/EPSA)
APPLY
Chipton-Ross
King of Prussia, PA
L5 Senior
September 2nd, 2026
Electrical Engineers
Engineering Services
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Senior Staff Engineer - Propulsion (Casual)
APPLY
Bnh
Arnold AFB, TN
L5 Senior
September 2nd, 2026
Engineers, All Other
Engineering Services
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Interdisciplinary Jobs
APPLY
ClearanceJobs
Frederick, MD
L5 Senior
September 2nd, 2026
Engineers, All Other
Engineering Services
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Maritime Systems Engineer (Top Secret Clearance with SCI Require with Security Clearance
APPLY
St Michaels
Tampa, FL
L6 Lead
September 2nd, 2026
Computer Systems Engineers/Architects
Engineering Services
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Senior Project Engineering Manager - Orlando FL
APPLY
VetJobs
Orlando, FL
L7 Manager
September 2nd, 2026
Architectural and Engineering Managers
Engineering Services
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Engineering Lead - Criticality, Trust and Assurance
APPLY
BAE Systems
Derwood, MD
L6 Lead
September 2nd, 2026
Architectural and Engineering Managers
Engineering Services
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Chief Technologist, Directed Energy Systems Architect
APPLY
KBR
Huntsville, AL
L7 Manager
September 2nd, 2026
Architectural and Engineering Managers
Engineering Services
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INTERDISCIPLINARY SUPERVISORY GENERAL ENGINEER/ COMPUTER SCIENTIST
APPLY
Naval Air Warfare Center Training Systems Division Nawctsd
St Inigoes, MD
L6 Lead
September 2nd, 2026
Telecommunications Engineering Specialists
Engineering Services
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Nuclear Enterprise Mission Division Chief Engineer
APPLY
MITRE
New Bedford, MA
L7 Manager
September 9th, 2026
Nuclear Engineers
Engineering Services
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Engineering Technician I with Security Clearance
APPLY
Prescient Edge
Patuxent River, MD
L3 Junior
September 11th, 2026
Engineering Technologists and Technicians, Except Drafters, All Other
Engineering Services
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Journeyman Engineer with Security Clearance
APPLY
Prescient Edge
Patuxent River, MD
L5 Senior
September 11th, 2026
Engineers, All Other
Engineering Services
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Mid-Level or Senior Ship Integration & Test (SI&T) Engineer Jobs
APPLY
ClearanceJobs
Andrews Air Force Base, MD
L6 Lead
September 11th, 2026
Marine Engineers and Naval Architects
Engineering Services
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GMD Ground Systems Principal Systems Engineer
APPLY
Valkyrie Enterprises
Huntsville, AL
L6 Lead
September 11th, 2026
Computer Systems Engineers/Architects
Engineering Services
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Principal Systems Engineer Jobs
APPLY
ClearanceJobs
Hill Air Force Base, UT
L6 Lead
September 11th, 2026
Engineers, All Other
Engineering Services
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Section Leader - Mgr, Mech Eng
APPLY
Prattwhitney
Tewksbury, MA
L7 Manager
September 11th, 2026
Architectural and Engineering Managers
Engineering Services
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Senior Mechanical Engineering Technician with Security Clearance
APPLY
Prescient Edge
Chevy Chase, MD
L5 Senior
September 11th, 2026
Mechanical Engineering Technologists and Technicians
Engineering Services
Show all >
Mechanical Technician 3
APPLY
First Tek
Redondo Beach, CA
L5 Senior
September 11th, 2026
Mechanical Engineering Technologists and Technicians
Engineering Services
Show all >
Lead Optical Engineer - Stray Light & EO/IR Space Payloads - Active Secret | Top Secret/SCI Clearance
APPLY
MDA Edge
West Chester, PA
L5 Senior
September 12th, 2026
Architectural and Civil Drafters
Engineering Services
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JUNIOR ELECTRICAL ENGINEER-SW Jobs
APPLY
Clearance
Keyport, WA
L2 Entry
September 12th, 2026
Ship Engineers
Engineering Services
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Senior Systems Engineer - MBSE Lead for DoD Projects
APPLY
Bechtel
Spencerport, NY
L5 Senior
September 12th, 2026
Architectural and Engineering Managers
Engineering Services
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Early Career Electrical Systems and Controls Engineer - Hypersonics
APPLY
Bnh
Memphis, TN
L5 Senior
September 3rd, 2026
Electrical Engineers
Engineering Services
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