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10,000+
"validation engineer"
jobs
in
National Security
in last 30 days
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8,983
"validation engineer"
jobs
in
National Security
in last 30 days
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Date
Last 30 days
Journeyman MBSE Systems Engineer - PMA 265
APPLY
Synectic Solutions
Hyattsville, MD
L5 Senior
September 2nd, 2026
Computer Systems Engineers/Architects
Engineering Services
Show all >
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
Show all >
MBSE Systems Engineer (Journeyman) - Naval Fighter Programs
APPLY
Synectic Solutions
Brooklyn, NY
L3 Junior
September 2nd, 2026
Aerospace Engineers
Engineering Services
Show all >
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
Show all >
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
Show all >
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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Engineer III - JSE Edwards
APPLY
JT4
Edwards, CA
L5 Senior
August 31st, 2026
Aerospace Engineers
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
Show all >
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
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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
Show all >
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
Show all >
Modeling & Simulation Systems Engineer Jobs
APPLY
Clearance
Colorado Springs, CO
L6 Lead
September 11th, 2026
Aerospace Engineers
Engineering Services
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Senior Principal System Safety Engineer Jobs
APPLY
Clearance
Tewksbury, MA
L6 Lead
September 11th, 2026
Health and Safety Engineers, Except Mining Safety Engineers and Inspectors
Engineering Services
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Journeyman MBSE Systems Engineer - PMA 265 Jobs
APPLY
Clearance
Lexington Park, MD
L5 Senior
September 11th, 2026
Computer Systems Engineers/Architects
Engineering Services
Show all >
Staff Electrical Engineer - 17612
APPLY
Northrop Grumman
Manhattan Beach, CA
L6 Lead
September 11th, 2026
Electrical Engineers
Engineering Services
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MBSE engineer
APPLY
Intime Infotech
Shreveport, LA
L6 Lead
September 12th, 2026
Computer Systems Engineers/Architects
Engineering Services
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Test Operations Support Analyst
APPLY
Serco
Oxford, PA
L6 Lead
September 12th, 2026
Business Operations Specialists, All Other
Engineering Services
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