101 prototype engineer jobs at 66 companies in Manassas, VA

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Prototype Machinist (Mech Tech H 3)
Alexandria, Virginia, United States
$30-$45/hr OnsiteFull Time
HII
HIINYSE: HII: Builds naval ships and provides global defense technology solutions.
5+ YOE5+ years related machining experience; proficiency with CNC programming/set-up, conventional lathes and mills, measurement tools, and reading engineering drawings; HS/GED or certification preferred; associate degree preferred.
CNC, knee mills, lathes, CNC routers, waterjets, lasers, Mastercam, Electronic measurement devices
1d
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Principal Engineer
Beltsville, Maryland, United States
$140k-$190k/yr OnsiteFull Time
Ion Storage Systems
Ion Storage Systems: Develops and manufactures high-performance solid-state ceramic battery technology.
10+ YOE10+ years engineering experience, B.S. (required) in mechanical/electrical/mechatronics, strong hands-on hardware and automation experience, 3D CAD skills, prototype line and equipment build experience, ability to lead root-cause investigations and mentor engineers.
3D CAD
2mo
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Senior Infrastructure Engineer
College Park, Maryland, United States
$135k-$216k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
12+ YOEPoly cleared senior engineer with 12+ years in systems engineering or application prototyping; strong customer-facing and leadership capabilities; relevant certifications.
INCOSE, CISSP, CCNA, RHCE, MCSE, VCP, ITIL, PMP, Agile
1mo
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Lead Design Engineer
Austin or Cody or Washington
OnsiteFull Time
Fathom5
Fathom5: Develops security-focused industrial technology and software for defense.
5+ YOEB.S. in engineering, 5+ years engineering experience, hands-on CAD and prototype assembly experience, gearbox design capability, strong written and oral communication, ability to perform shop work and occasional travel.
CAD
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Mechanical Design Engineer
Columbia, Maryland, United States
$93k-$120k/yr OnsiteFull Time
TCOM
TCOM: Designs and manufactures persistent surveillance aerostat and ISR systems.
5+ YOEBachelor's degree in Engineering, minimum 5 years engineering experience (advanced degree may substitute), experience with simulation and prototyping, ability to produce engineering drawings and documentation, and support design reviews and testing.
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Principal Innovation Engineer
Reston, Virginia, United States
$177k-$332k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
10+ YOE10+ years in systems/software/platform engineering with experience prototyping emerging technologies, cloud/edge deployments, biometrics/peripherals, networking, resilience, and presenting technical recommendations.
AWS, Terraform, Java, MongoDB, Elasticsearch/OpenSearch, RabbitMQ, Kafka, Grafana, ELK, HashiCorp Consul, Nomad, Vault
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Senior Infrastructure Engineer
College Park, Maryland, United States
$135k-$216k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
12+ YOESenior-level infrastructure engineer with 12+ years in system engineering/prototype development; active TS/SCI w/ Polygraph; multiple technical certs; on-site near College Park, MD.
1w
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Junior Electrical Engineer
Dulles, Virginia, United States
$61k-$122k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
0+ YOEBS in electrical/computer engineering, ability to obtain TS/SCI, 0-3 years relevant experience, understanding of analog/digital circuits, schematic reading, prototyping, lab test equipment familiarity.
Altium Designer, OrCAD, Eagle, Python, MATLAB, oscilloscope, multimeter, signal generator, CAD
3w
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Senior Mechanical Engineer
Sterling, Virginia, United States
HybridFull Time
Axon
AxonNASDAQ: AXON: Develops weapons and software for law enforcement and safety.
Bachelor's degree in mechanical engineering (or related), proven mechanical design and system integration experience, CAD proficiency, prototyping and fabrication skills, thermal/structural analysis experience, knowledge of embedded systems and MIL STDs, strong communication.
SolidWorks, AutoCAD, Fusion 360, ESP32, Arduino, Raspberry Pi, FEA, 3D printers, drills, bandsaws
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Principal Optical Engineer
Lorton, Virginia, United States
$165k-$214k/yr OnsiteFull Time
QinetiQ
QinetiQLondon Stock Exchange: QQ: Provides defense, security, and aerospace technology solutions.
10+ YOEBachelor's in optical engineering, 10+ years imaging and laser optical design experience, proficiency with Zemax/CODE V and NVIPM, laboratory optical characterization, prototype integration, and active DoD Secret clearance; up to 10% travel.
Zemax, CODE V, Night Vision Integrated Performance Model (NVIPM)
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Advanced Mechanical Engineer
Herndon, Virginia, United States
$137k-$144k/yr OnsiteFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNYSE: GD: Designs and manufactures defense and mission-critical technology solutions.
5+ YOEBachelor's in Mechanical Engineering (plus 5 years) or Master's (plus 3 years); Department of Defense Secret clearance at hire; U.S. citizenship; experience in structural analysis, machine design, prototyping, and familiarity with standards and CAD/analysis tools.
Ansys, Plaxis, Inventor, Revit
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Principal AI/ML Engineer - Sales Engineer- Remote
Eden Prairie or Minneapolis or Washington or United States
$165k-$282k/yr RemoteFull Time
UnitedHealth Group
UnitedHealth GroupNYSE: UNH: Provides health insurance and technology-enabled health care services.
Hands-on AI/ML/GenAI engineering with strategic solutioning; experience with Python, LLMs, RAG, AI agents; customer-facing workshop and executive presentation experience; healthcare domain knowledge; rapid prototyping skills.
Python, LLMs, RAG, AI agents, Cursor, GitHub Copilot, Claude Code
1w
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Mechanical Design Engineer
Washington, District of Columbia, United States
$112k-$190k/yr OnsiteFull Time
Technology Service Corporation
Technology Service Corporation: Develops advanced sensor systems and engineering solutions for defense.
5+ YOEBachelors in engineering or equivalent, 5+ years mechanical design/product development experience, SolidWorks and prototyping/testing experience, active DoD Secret (ability to obtain TS/SCI), able to lift 50 lbs.
SolidWorks, CNC
1mo
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Forward Deployed Engineer (Federal)
Washington or New York City
$175k-$235k/yr FieldFull Time
Cape
Cape: A privacy-first mobile carrier providing secure cellular network services.
2+ YOE2+ years engineering or FDE experience; U.S. citizenship and eligibility for Top Secret clearance; ability to scope ambiguous problems, embed with customers, prototype integrations, and support live operations.
1mo
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Radar Payload Systems Engineer
Chantilly, Virginia, United States
OnsiteFull Time
KBR
KBRNYSE: KBR: Provides engineering, technology, and professional services for global markets.
8+ YOESenior radar hardware engineer with TS/SCI clearance, 8+ years radar space system experience, remote sensing knowledge, MATLAB/Python prototyping.
MATLAB, Python, MS Office
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Textile Engineer
Lorton, Virginia, United States
$69k-$158k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
3+ YOE3+ years analyzing clothing/footwear/material performance; knowledge of fibers, fabrics, sizing, QA/QC, prototyping; bachelor’s degree; secret clearance; EMR not applicable.
Adobe Illustrator, Gerber Accumark, CLO3D, Browzwear
3mo
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Hardware Integration Engineer (Electrical)
Dulles, Virginia, United States
$87k-$182k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEAbility to obtain TS/SCI, BS in EE/CE/CS (ABET), 5+ years RF engineering experience, strong RF theory and system design skills, prototyping and test experience, strong communication and attention to detail.
Altium Designer, HFSS, CST, ADS
4d
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Textile Engineer
Lorton, Virginia, United States
$69k-$158k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
3+ YOE3+ years analyzing clothing/footwear/material performance; knowledge of fibers, fabrics, garment construction, sizing, QA/QC, prototyping; data analytics experience; Secret clearance and bachelor's degree required.
Adobe Illustrator, Gerber Accumark, CLO3D, Browzwear
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Engineer – Testing of Fuze Components
Indian Head, Maryland, United States
OnsiteFull Time
EHS Technologies
EHS Technologies: Provides engineering, IT, and environmental services to defense agencies.
BS in Electrical or Mechanical Engineering required; experience in fuze component design, prototyping, and testing; knowledge of test planning, data acquisition, and test reporting; Altium Designer and MAVlink experience preferred; must be US citizen able to obtain security clearance and explosives medical certification; subject to random drug test...
Altium Designer, MAVlink
3mo
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Multidisciplinary Systems Engineer (Mechanical/Software)
Frederick, Maryland, United States
$75k-$101k/yr HybridFull Time
WGS Systems
WGS Systems: Develops intelligence and surveillance systems for military and law enforcement.
2+ YOEBachelor's in Mechanical Engineering, Mechatronics, Robotics, Aerospace Engineering, or related field; 2-5 years product development experience in defense/aerospace/electronics; US Citizen with ability to obtain USG security clearance; strong CAD/FEA; Python; prototyping; hardware/software integration.
SolidWorks, CREO, ANSYS, COMSOL, SolidWorks Simulation, MATLAB, Python, C/C++, Linux, Git