88 prototype engineer jobs at 60 companies in Towson, MD

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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
3w
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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
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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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Senior Engineer
Lancaster, Pennsylvania, United States
OnsiteFull Time
Eaton
EatonNYSE: ETN: Intelligent power management delivering energy-efficient solutions.
0+ YOEBS in Engineering required; knowledge of heat transfer, two-phase systems, CFD (Flotherm, Icepak), solid modeling, experiment design, technical writing, and prototype testing; ability to lift 25 lbs and work in lab/production safety areas.
Flotherm, Icepak
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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.
2mo
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Senior Mechanical Engineer
Winter Park or Huntsville or Auburn or Opelika or Orlando or Niceville or Fort Walton Beach or Atlanta or Warner Robins or Dayton or Boston or Salt Lake City or Aberdeen
$110k-$160k/yr OnsiteFull Time
Integrated Solutions for Systems
Integrated Solutions for Systems: Provides engineering, systems integration, and research for defense.
7+ YOEBachelors in Mechanical Engineering, 7+ years mechanical design and prototype experience, SolidWorks and CAD proficiency, hands-on hardware integration and troubleshooting, ability to obtain SECRET security clearance.
SolidWorks, CAD
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CBI Electrical Engineer
Baltimore, Maryland, United States
$101k-$152k/yr OnsiteFull Time
ITW
ITWNYSE: ITW: Global manufacturer of specialized industrial equipment and consumables.
5+ YOEBachelor's in electrical engineering and 5+ years experience; schematic and wiring design, prototype validation, software specification creation, PLC programming, compliance (UL, Energy Star) experience.
PLC
2mo
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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.
3d
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Principal Mechanical Engineer
Laurel, Maryland, United States
$168k-$176k/yr OnsiteFull Time
Antenna Research Associates
Antenna Research Associates: Designs and manufactures advanced antenna and C5ISR RF systems.
10+ YOEBSME required, 10+ years mechanical engineering experience, SolidWorks and FEA proficiency, ASME Y14.100 drawing experience, DFMEA and prototype testing skills, strong communication and manufacturing knowledge.
SolidWorks, FEA, ASME Y14.100, DFMEA
2d
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Research Engineer
Reston, Virginia, United States
$109k-$147k/yr HybridFull Time
Verisign
VerisignNASDAQ: VRSN: Provides internet domain name registry and DNS infrastructure services.
5+ YOEResearch software engineer with 5+ years software development (Bachelor's) or 3+ with Master's; experience in systems research, prototype development, publications, C/C++/Java/Python, SQL/NoSQL; research or network security experience preferred.
C, C++, Java, Python, SQL, NoSQL, *nix
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Mechanical Design Engineer II
Lancaster, Pennsylvania, United States
OnsiteFull Time
Woodstream
Woodstream: Manufactures and markets pest and animal control products.
3+ YOEBachelor's in Mechanical Engineering, 3+ years engineering experience managing mid-large projects, proficiency in SolidWorks/3D CAD, prototyping and testing experience, plastics and machining experience preferred.
SolidWorks
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Research Engineer, Mechanical
Newark, Delaware, United States
OnsiteFull Time
Air Liquide
Air LiquideEuronext Paris: AI: Supplies industrial gases, medical gases, and related technologies.
3+ YOEMaster's or Bachelor's in Mechanical, Electrical, or Software Engineering; 3+ years in rapid prototyping, system integration, and tech transfer; CAD, 3D printing, C++, Python, machine tool experience; strong problem-solving and communication skills.
Computer Aided Design (CAD), 3D Printing, machine tools, C++, Python
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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
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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
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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.
2mo
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Mechanical Engineer II
Sterling, Virginia, United States
HybridFull Time
Axon
AxonNASDAQ: AXON: Develops weapons and software for law enforcement and safety.
Bachelor's or Master's in Mechanical Engineering; mechanical design and system integration experience; CAD proficiency; prototyping; knowledge of embedded systems; thermal/structural analysis; MIL-STD familiarity; strong communication; ability to work in a fast-paced environment.
SolidWorks, AutoCAD, Fusion 360, 3D Printers, ESP32, Arduino, Raspberry Pi
2w
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Mechanical Engineer (Mechanical Design) - Entry to Mid Level (Maryland)
Fort Meade, Maryland, United States
$87k-$153k/yr OnsiteFull Time
National Security Agency
National Security Agency: US agency providing foreign signals intelligence and cybersecurity.
0+ YOEBachelor's in mechanical engineering or related field, experience in mechanical design, CAD/CAE, prototyping, HVAC/controls or project management; strong problem solving and customer service skills.
Computer Aided Design (CAD), Computer Aided Engineering (CAE), Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), Additive Manufacturing, 3D Printing
1w
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Senior Automation Controls Engineer – R&D / Material Handling
Baltimore or Washington
$75k-$192k/yr OnsiteFull Time
Laitram
Laitram: Global manufacturer of industrial equipment and processing machinery.
7+ YOEBachelor's in engineering, 7+ years controls experience, PLC/HMI development, machine safety, electrical schematics, prototype-to-field implementation, and cross-functional collaboration.
Rockwell Studio 5000, Siemens TIA Portal, Beckhoff/TwinCAT, AutoCAD Electrical, MATLAB, C++, Python, C#, .NET
2w
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Senior Forward Deployed Engineer (D.C Area)
Washington, District of Columbia, United States
$185k-$260k/yr FieldFull Time
Legion Intelligence: Secure generative AI platform for defense and enterprise workflows.
4+ YOEUS citizen with TS/SCI clearance,4+ years forward-deployed or solution engineering experience,proficiency in Python and JavaScript/TypeScript,full-stack/app prototyping,enterprise integrations,autonomous operator.
Python, JavaScript, TypeScript, Microsoft O365, Palantir Foundry, Databricks, ServiceNow, Atlassian, Node.js, Next.js, React, n8n