30 prototype engineer jobs at 23 companies in Smithsburg, MD
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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
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
1w
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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
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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
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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
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Security Hardware Engineer, Infrastructure Security
Herndon, Virginia, United States
$117k-$160k/yr OnsiteFull Time
4+ YOERequires 4+ years in mechanical engineering or equivalent experience, prototyping, hardware troubleshooting, functional specifications, design verification plans, and functional test procedures. Physical security experience preferred.
18h
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Sr Manufacturing Process Engineer (UAV/USV)
Rockville, Maryland, United States
$105k-$125k/yr OnsiteFull Time
7+ YOEBachelor’s degree in engineering; 7–12+ years in aerospace or complex electromechanical manufacturing; experience scaling prototypes to production, process design, RCCA, and regulated or defense environments.
ERP, PLM
3w
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Electrical Engineer (RF / Embedded Systems)
Herndon, Virginia, United States
$130k-$140k/yr HybridFull Time
Mid-level electrical engineer with strong RF and embedded systems experience, PCB and power electronics skills, firmware and I2C protocol knowledge, track record moving prototypes to manufacturable products, fluent with modern AI tooling, U.S. person and willing to be onsite 4 days/week with occasional travel.
I2C, Claude, Gemini
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Senior Mechanical Product Engineer - Data Center Chillers (onsite)
New Freedom, Pennsylvania, United States
$100k-$125k/yr OnsiteFull Time
5+ YOEBachelor's degree in mechanical, aerospace, or electro-mechanical engineering; 5 years of CAD, product design, prototype testing, and design documentation experience; design and product development experience required.
CAD, UL, CE, PED, ASME
1mo
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Senior Staff AI Engineer
Columbia, Maryland, United States
$140k-$185k/yr OnsiteFull Time
7+ YOEAdvanced degree in EE or related field, 7+ years experience, hands-on prototyping/fabrication, deploying tinyML on microcontrollers, sensor and DSP experience, mentorship and team leadership, proficiency in Python, MATLAB, and C.
Python, MATLAB, C
1w
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Principal Digital Electrical Engineer
Germantown, Maryland, United States
$156k-$200k/yr HybridFull Time
8+ YOEU.S. citizen with BSEE/MSEE or equivalent, 8+ years electrical design experience, expertise in high-speed/high-density digital designs, PCB/prototyping, firmware loading, test plans, and team leadership.
OrCAD/Cadence, LTspice, Hyperlynx, Microsoft Office
1mo
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Communications and Signal Processing Research and Development Engineer
State College or Reston or Annapolis Junction
$168k-$319k/yr OnsiteFull Time
14+ YOERequires technical background in communications and signal processing, simulation/analysis experience (MATLAB or Python), ability to prototype with software defined radios, eligibility for Secret-level clearance, and strong written/oral communication.
MATLAB, Python, C++, Software Defined Radios (SDRs)
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Biomedical Engineer I - Standardized Organoid Modeling Center
Frederick, Maryland, United States
$78k-$111k/yr OnsiteFull Time
2+ YOEBachelor's degree or 4 years' relevant experience, plus 2 years progressive lab research; knowledge of biomedical engineering, image processing, prototyping/CAD, automated workflows, QC, and Microsoft Office; ability to obtain security clearance.
Microsoft Office, computer-aided design
2mo
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Image Processing Engineer III
Rockville or United States
OnsiteFull Time
5+ YOE5+ years in computer vision and image processing; experience turning prototypes into production software; advanced degree may count toward experience.
Python, C++, MATLAB
2w
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AI/ML Full Stack Engineer
Columbia, Maryland, United States
$100k-$203k/yr HybridFull Time
5+ YOEMust have TS/SCI clearance, 5+ years software development, experience with LLMs, agentic AI frameworks, frontend (React/Next.js/Angular) and backend (Python/Node.js/Java/Go), cloud-native deployments, and rapid prototyping.
Claude Code, OpenAI Codex, Cursor, LangGraph, CrewAI, Google ADK, React, Next.js, Angular, TypeScript, JavaScript, Python, Node.js, Java, Go, PostgreSQL, MySQL, MongoDB, DynamoDB, AWS, Azure, GCP
1mo
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Senior CNO Software Developer
Fort Meade or Columbia
$146k/yr OnsiteFull Time
10+ YOEActive TS/SCI with CI Polygraph (or ability to obtain). 10+–16+ years experience (degree-dependent). Experience with CNO, Linux/Windows, C/C++, Python, assembly, vulnerability research, and rapid prototyping.
Linux, Windows, C, C++, Python, assembly language
1mo
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Application Developer SME (TS/SCI with Poly Required)
Dulles, Virginia, United States
$164k-$275k/yr OnsiteFull Time
10+ YOEUS citizen with active TS/SCI + polygraph required; experienced UI/UX developer for accessible front-end design, creating prototypes, wireframes, and usability standards; 10+ years experience.
1mo
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Product Development Specialist
Spring Grove, Pennsylvania, United States
OnsiteFull Time
4+ YOEBachelor's degree in paper science, chemical engineering, or related; >3 years relevant experience; knowledge of coating processes; ability to run trials, develop prototypes, manage projects, and communicate with customers.
2mo
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Configuration Management Analyst - Data Analytics
Sterling Heights or Maple Grove or York or Michigan or Minnesota or Pennsylvania or United States
$97k-$165k/yr HybridFull Time
4+ YOEBachelor's in Business/Statistics/Engineering with 4+ years (or equivalent); strong data analytics, Power BI, statistical methods; experience with Windchill/TeamCenter, Oracle, TIPQA; RCCA/Lean experience; ability to work in prototype/production environments.
Power BI, Oracle, Windchill, TeamCenter, TIPQA
1mo
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Chief Technology Officer
Ashburn, Virginia, United States
$180k-$200k/yr OnsiteFull Time
8+ YOEMS or PhD in mechanical/mechatronics/robotics,8+ years in robotics hardware,proven technical leadership,system integration and prototyping experience,CAD fluency,and defense-adjacent experience.
SolidWorks, Fusion 360, CATIA, ROS2, Isaac Sim
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