25 prototype engineer jobs at 22 companies in Willimantic, CT
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Sensor Solutions Prototype Engineer Sr (Hartford, CT, US)
Hartford, Connecticut, United States
OnsiteFull Time
7+ YOE7+ years engineering experience; 3+ years field testing; 3+ years project management; IoT and sensor technology; engineering programming experience preferred; PE license preferred; Bachelor’s in Engineering; Masters preferred.
IoT, Sensor technology, Engineering software
1mo
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Sr. Mechanical Engineer
Rumford, Rhode Island, United States
$150k-$185k/yr HybridFull Time
6+ YOE6+ years mechanical engineering experience, SolidWorks proficiency, hands-on prototyping and testing, system integration experience, Bachelor's in Mechanical Engineering, U.S. citizenship and eligibility for Secret clearance.
SolidWorks, CAD
1w
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Mechanical Engineer
Middletown, Rhode Island, United States
OnsiteFull Time
2+ YOEB.S. in Mechanical Engineering, 2+ years experience, SolidWorks proficiency, US citizenship and ability to obtain SECRET clearance, experience with prototype assembly, GD&T, and test hardware.
SolidWorks
1w
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Sr Mechanical Engineer
Minneapolis or Providence
HybridFull Time
3+ YOEBachelor's in Mechanical Engineering, 3+ years medical device development experience, CAD and prototyping proficiency, familiarity with FDA/QSR/ISO, strong communication and analytical skills.
3D CAD, 2D CAD
3mo
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Design Engineer Internship - Fall 2026
Bloomfield or Suffield
OnsiteInternship
0+ YOEPursuing mechanical engineering; strong SolidWorks; hands-on prototyping; problem-solving; US person preferred.
SolidWorks, CAD
2mo
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Electrical Engineer
Groton, Connecticut, United States
$100k-$110k/yr OnsiteFull Time
5+ YOEMid-senior electrical engineer with 5-10 years' experience, BSEE, US citizenship, secret clearance, PCB/CCA design and fabrication, KiCAD/Gerber/CAD experience, prototyping and test procedure development.
KiCAD, Gerber, CAD
6d
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Sr. Mechanical Engineer
North Kingstown, Rhode Island, United States
OnsiteFull Time
8+ YOE8+ years mechanical engineering experience building electro-mechanical consumer or commercial products; hands-on prototyping, experiment design, SolidWorks proficiency, and ability to integrate mechanical and electronic systems required.
SolidWorks, CFD
1mo
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R&D Mechanical Engineer
Wallingford, Connecticut, United States
$90k-$115k/yr OnsiteFull Time
3+ YOE3+ years R&D mechanical engineering experience, SolidWorks and 3D-CAD proficiency, hands-on prototyping and shop experience, FEA/DFSS analytical skills, Microsoft Office proficiency, BSc/MSc in Mechanical or Electrical Engineering, strong English communication.
3D-CAD, SolidWorks, 3D printers, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Microsoft Word, FEA, Design for Six Sigma
2mo
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Senior Mechanical Engineer (Tolland, US)
Tolland, Connecticut, United States
OnsiteFull Time
5+ YOEBachelor's in Mechanical Engineering (or related), minimum 5 years mechanical engineering experience (R&D preferred), strong CAD proficiency (NX; Windchill/Creo a plus), experience with prototyping, testing, FMEA/DFA/DFM, and cross-functional collaboration.
NX, Windchill, Creo
5d
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Senior Engineer, Product Development Engineering
Franklin, Massachusetts, United States
$95k-$116k/yr OnsiteFull Time
5+ YOEBachelor's degree in mechanical engineering, 5+ years of experience, air filter design and HVAC knowledge, CAD, prototyping, vendor coordination, analytical testing, and cross-functional communication skills.
Computer-aided design (CAD), HVAC, Minitab, SolidWorks, CFD, FEA
1mo
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Engineer I, Test
East Longmeadow, Massachusetts, United States
$60k-$97k/yr OnsiteFull Time
1+ YOE1+ years relevant experience; hands-on testing and supplier qualification; experience with measurement/metallurgical/metrological devices; CAD experience (Catia preferred); able to create prototypes, test plans, and technical reports.
CAD, Catia
3w
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Mechatronics Engineer - Product Innovation
Torrington, Connecticut, United States
OnsiteFull Time
Degree in mechatronics, mechanical, electrical, robotics or related field; experience developing electromechanical products; CAD proficiency; strong hands-on problem-solving and prototype validation skills.
CAD
6d
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ELECTROMECHANICAL DESIGNER/ENGINEER
Newport or Middletown or Fall River
OnsiteFull Time
5+ YOEAbility to design and document electromechanical systems, develop PCB and cable harness designs, build and test prototypes, obtain/maintain SECRET clearance, and use SolidWorks/OrCAD; minimum 5 years relevant experience.
SolidWorks, SolidWorks PDM, CircuitWorks, OrCAD
2mo
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Senior Research Engineer - Experimental Engineering
Yonkers or Washington or Colchester or Arizona or California or Connecticut or Illinois or Maryland or Massachusetts or Michigan or New Hampshire or New Jersey or New York or Texas or Vermont or Virginia or District of Columbia
$115k-$160k/yr RemoteFull Time
Senior research engineer with deep full-stack software engineering experience, strong applied AI/ML knowledge, prototyping and R&D experience, Python/FastAPI and frontend (React/React Native) familiarity, and ability to lead experiments and mentor engineers.
AI, Machine Learning, Python, FastAPI, React, React Native, RAG
1mo
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Senior Mechanical Engineer
Milford, Massachusetts, United States
$107k-$178k/yr OnsiteFull Time
3+ YOEAdvanced degree or equivalent experience in mechanical engineering, experience designing precision mechanical and fluidic systems, prototype development, FEA/CFD analysis, 3D CAD (SolidWorks/NX), and strong cross-disciplinary communication.
SolidWorks, NX, FEA, CFD, C++, Python, MATLAB, LabVIEW
1mo
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RI Office: Exempt
North Kingstown, Rhode Island, United States
OnsiteFull Time
Expertise in mechanism and actuation system design, advanced CAD (NX preferred), kinematic/dynamic/structural analysis (FEA), hands-on prototyping and testing, cross-functional collaboration, and mentoring engineers.
NX, FEA, GD&T, DFMA
3mo
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Productization Engineering Lead
Franklin, Massachusetts, United States
$125k-$150k/yr OnsiteFull Time
7+ YOEBachelor’s degree in Mechanical, Electrical, Industrial, or Systems Engineering; 7+ years in product development or manufacturing engineering; CAD experience; leadership; transition prototypes to high-volume production.
CAD
3w
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System Design Manager
Tariffville, Connecticut, United States
OnsiteFull Time
10+ YOEBachelor's in engineering or industrial design,10+ years industrial design experience,experience with materials,manufacturing processes,CAD/PLM/DDM,prototyping,testing,and standards compliance.
CAD, Product Lifecycle Management (PLM), Design Data Management (DDM), Geometric Dimensioning and Tolerancing (GD&T)
2mo
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ENGINEERING TECHNICIAN V-GM
Newport, Rhode Island, United States
OnsiteFull Time
5+ YOE5+ years in electrical/electronic systems; senior hull sensors technician; hardware prototyping, integration, and documentation; fault analysis.
3mo
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CT - 5084 Development Engineering Technician III
Westborough, Massachusetts, United States
$24-$40/hr OnsiteFull Time
Equipment setup, troubleshooting, assembly of electro-mechanical prototype equipment; maintenance and calibration compliance; support development testing and documentation.
Machine Shop Tools, Calibration Equipment
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