99 prototype engineer jobs at 66 companies in Lorton, VA
1mo
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Prototype Machinist (Mech Tech H 3)
Alexandria, Virginia, United States
$30-$45/hr OnsiteFull Time
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
2w
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Principal Engineer
Beltsville, Maryland, United States
$140k-$190k/yr OnsiteFull Time
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
6d
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Sr Research Engineer
Reston, Virginia, United States
$164k-$222k/yr HybridFull Time
8+ YOEBachelors and Masters in CS/Engineering or related, 8+ years research engineering experience, systems and network security expertise, prototype development, publications, and strong development skills.
C, C++, Java, Python, SQL, NoSQL
2mo
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Senior Infrastructure Engineer
College Park, Maryland, United States
$135k-$216k/yr OnsiteFull Time
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
1d
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Sr. Antenna Engineer
Laurel, Maryland, United States
OnsiteFull Time
7+ YOE7+ years antenna/RF engineering experience, US citizenship, ability to obtain security clearance, BS in engineering, hands-on antenna/array design and prototyping, DoD contract experience.
CST, HFSS, Microwave Office, MATLAB, Simulink
2mo
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Lead Design Engineer
Austin or Cody or Washington
OnsiteFull Time
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
2mo
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Mechanical Design Engineer
Columbia, Maryland, United States
$93k-$120k/yr OnsiteFull Time
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.
3w
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Principal Innovation Engineer
Reston, Virginia, United States
$177k-$332k/yr OnsiteFull Time
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
2mo
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Multidisciplinary Engineer II
Springfield, Virginia, United States
OnsiteFull Time
2+ YOETS/SCI with CI poly, BS/MS in engineering or CS, 2+ years, prototyping, CAD, travel up to 10%, strong communication.
SolidWorks, Autodesk Revit, Arduino, Raspberry Pi, MATLAB, Mathcad, Python, C++, Java, C#, MS Office, Visio
2mo
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Senior Infrastructure Engineer
College Park, Maryland, United States
$135k-$216k/yr OnsiteFull Time
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.
1d
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Project Engineer
Leesburg or Allendale
$90k-$110k/yr HybridFull Time
2+ YOEBS in Mechanical/Biomedical Engineering required (MS preferred),2+ years relevant experience,knowledge of design controls,GD&T,materials,manufacturing,prototyping,and basic project management;Creo or SolidWorks and CAE experience.
CAE, Creo, SolidWorks
3w
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Junior Electrical Engineer
Dulles, Virginia, United States
$61k-$122k/yr OnsiteFull Time
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
1mo
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Principal Optical Engineer
Lorton, Virginia, United States
$165k-$214k/yr OnsiteFull Time
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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Senior Mechanical Engineer
Sterling, Virginia, United States
HybridFull Time
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
1mo
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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
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
2d
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Boyd Thermal by Eaton - Test Engineer
Fredericksburg, Virginia, United States
OnsiteFull Time
10+ YOEBachelor's in engineering or related, 10+ years assembling/integrating/testing electrical and mechanical systems, EM prototype and validation experience, ability to read drawings and troubleshoot hardware.
4w
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Mechanical Design Engineer
Washington, District of Columbia, United States
$112k-$190k/yr OnsiteFull Time
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
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.
2mo
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Radar Payload Systems Engineer
Chantilly, Virginia, United States
OnsiteFull Time
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
3w
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Textile Engineer
Lorton, Virginia, United States
$69k-$158k/yr HybridFull Time
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