21 prototype engineer jobs at 15 companies in Keene, NH

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Prototype Test Engineer- Mechatronics
Claremont, New Hampshire, United States
OnsiteFull Time
Jabil
JabilNYSE: JBL: Provides manufacturing and supply chain solutions for global brands.
5+ YOEBachelor's in engineering, 5+ years related test/mechatronics experience, strong electromechanical and mechatronics background, Python and SolidWorks familiarity, test development, failure analysis, data acquisition and reporting skills.
Python, SolidWorks
1mo
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Electrical Design Engineer
Concord, New Hampshire, United States
OnsiteFull Time
Standex International
Standex InternationalNew York Stock Exchange: SXI: Global industrial manufacturer of electronic components and specialty machinery.
5+ YOE5+ years engineering experience; BS in Electrical Engineering (ABET) preferred; experience with coil/transformer/inductor design, electromagnetic modeling/analysis, FEA, prototyping, testing, and strong communication skills.
2D/3D Modeling Software, Finite Element Analysis, Simulation Software, Daily Visual Management, A3 Problem Solving, Kaizen
2w
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Junior Plastics Engineer
Manchester, New Hampshire, United States
OnsiteFull Time
DEKA Research & Development
DEKA Research & Development: Designs and develops advanced medical and robotic technologies.
Degree in plastics or manufacturing engineering, understanding of plastic materials and molding methods, prototype-to-production assembly, DOE and documentation (IQ/OQ/PQ, PFMEA), supplier coordination; some travel possible.
1mo
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Senior Mechanical Engineer, Production / Sustainment
Nashua, New Hampshire, United States
$90k-$152k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA.: Produces advanced defense, aerospace, and information security systems.
4+ YOEBachelor's in Mechanical Engineering, 4+ years engineering experience (or 2+ with MS), active DoD Secret clearance, experience with design/analysis, prototyping, testing, and troubleshooting high-reliability embedded systems.
ANSYS Workbench/Mechanical, PTC Creo, MATLAB/Simulink, Siemens NX, ANSYS Icepak
1mo
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Manufacturing Engineer
New Brighton or St. Paul or Westford
$61k-$123k/yr OnsiteFull Time
Abbott
AbbottNYSE: ABT: Manufactures medical devices, diagnostics, and nutritional health products.
3+ YOEBachelor's in electrical/electronic engineering (required), 3+ years PCB/layout and prototype experience, knowledge of FDA regulations, PC skills (spreadsheets/word/databases), Six-Sigma knowledge desirable, manufacturing/process validation experience, ability to travel ~25%.
Gage R&R, Cp, Cpk, SPC, Value Stream mapping, 5S, Visual Workplace, Quality Management Systems (QMS), Environmental Management Systems (EMS)
3w
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System Design Engineer
Lebanon, New Hampshire, United States
$95k-$125k/yr OnsiteFull Time
Simbex: Develops medical devices and wearable sports technology solutions.
Bachelors in engineering, proficiency with SolidWorks, GD&T, prototyping (3D printing/CNC), analog/digital data acquisition, electrical fundamentals, test-plan development, and strong communication skills.
SolidWorks, 3D printing, CNC, DAQ, oscilloscope, SQL, Python
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Electro-Mechanical Engineer – Process Specialist
West Lebanon, New Hampshire, United States
$106k-$123k/yr OnsiteFull Time
ESAB
ESABNYSE: ESAB: Manufacturer of industrial welding, cutting, and gas control equipment.
5+ YOEBachelor's in engineering, 5+ years mechanical design experience, troubleshooting large electro-mechanical machines, SolidWorks, microcontrollers/PLC experience, DOE familiarity, prototype build and process development skills.
SolidWorks, Microcontrollers, PLC, DOE, LASER, WaterJet
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Senior Mechanical Engineer
Nashua, New Hampshire, United States
OnsiteFull Time
Arista Networks
Arista NetworksNYSE: ANET: Provides cloud networking solutions and high-speed multilayer Ethernet switches.
7+ YOEBS/MS/PhD in Mechanical Engineering with 7+ years of mechanical design experience for data center/network equipment; PTC Creo/ProEngineer experience, thermal simulation, sheet metal and plastic design, BOM/ECO processes, hands-on prototype and testing experience, able to lift 50+ lbs, fluent English.
Creo 3D CAD, ProEngineer (PTC Creo), PTC Creo Simulate, PDMLink (PTC Windchill), Agile, ECAD
1mo
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Sr. Mechanical Development Engineer
Littleton, Massachusetts, United States
$105k-$144k/yr OnsiteFull Time
JetCool
JetCoolNASDAQ: FLEX: Direct-to-chip liquid cooling for high-performance computing.
7+ YOEBS/MS in Mechanical Engineering or equivalent, 7+ years developing mechanical components/assemblies for electro-mechanical systems, experience with liquid cooling/fluid systems, proficiency with SolidWorks/Creo/NX and GD&T (ASME Y14.5), prototyping and validation, materials and manufacturing knowledge.
SolidWorks, Creo, NX, GD&T, ASME Y14.5
2mo
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Process Engineer
Nashua, New Hampshire, United States
OnsiteFull Time
MACOM
MACOMNASDAQ: MTSI: Designs and manufactures semiconductor products for communications infrastructure.
5+ YOEAutomatic wire bonding and die attach experience required; 5+ years manufacturing experience; knowledge of chip-and-wire materials, SMT/PCBA processing, microwave/semiconductor manufacturing a plus; hands-on prototype assembly, operator training, and basic programming skills.
SMT, Auto Handlers
1mo
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Manufacturing Engineer III
Charlestown, New Hampshire, United States
OnsiteFull Time
Whelen Engineering
Whelen Engineering: Manufacturer of emergency warning and public safety lighting.
6+ YOEPlan and design manufacturing processes; contribute to projects; work independently; support continuous improvement; communicate with leadership; evaluate mechanical/electromechanical systems; develop prototypes; train technicians; DFMA experience; SolidWorks/CNC/milling and welding experience preferred.
SolidWorks, CNC Milling, CNC Lathe, Sheet Metal Design, MIG Welding, TIG Welding, Hand Assembly Techniques, SMT, Wave Soldering
5d
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Associate, Electrical Engineering (39071)
Northampton, Massachusetts, United States
$71k-$132k/yr OnsiteFull Time
L3Harris Technologies
L3Harris TechnologiesNYSE: LHX: Aerospace and defense providing mission-critical technology solutions.
Pursuing or recently completed Bachelor's in Electrical Engineering or related field; familiarity with Mentor Graphics Xpedition, LTSpice, Matlab, MathCAD; experience with CCA/PWB design, testing, and prototyping.
Mentor Graphics Xpedition, LTSpice, Matlab, MathCAD
2d
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Electrical Engineering Co-op
Hollis, New Hampshire, United States
OnsiteInternship
Flex
FlexNASDAQ: FLEX: Contract electronics manufacturing and supply chain management services.
Enrolled electrical/electronics/computer/biomedical engineering student, 3.0+ GPA, able to work 40hrs/week in-person Jan–Jun 2027, understands schematics, soldering, wiring, prototyping, lab measurement tools, and basic circuit design.
CAD, Labview, Arduino, oscilloscope, multimeter
1w
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Mechanical Engineering Intern - Fall 2026
Devens, Massachusetts, United States
$24-$27/hr OnsiteInternship, Temporary
VulcanForms
VulcanForms: Provides industrial-scale metal additive manufacturing and precision machining services.
Currently enrolled in a mechanical engineering program; basic mechanical engineering knowledge; ability to design, build, and test prototype systems; teamwork and cross-collaboration; familiarity with CAD and manufacturing processes.
CAD
2mo
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Development Manufacturing Engineering Technician II
West Boylston, Massachusetts, United States
$29-$36/hr OnsiteFull Time
Coghlin Companies: Provides product development and contract manufacturing services for capital equipment.
5+ YOEAssist development engineers in prototyping, debugging, testing, and documenting client products; lead technician team; strong electromechanical skills; good communication.
MS Office (Excel, Outlook), MRP/ERP systems, Kinetic, Power tools, Metrology equipment
2d
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Engineering Technician
Manchester, New Hampshire, United States
OnsiteFull Time
Sanmina
SanminaNASDAQ: SANM: Designs and manufactures complex electronics and mechanical systems.
6+ YOEMinimum 6 years related experience; Associates in Engineering preferred. Experience with prototype testing, troubleshooting, assembly and test processes, Lean 5S, and training technicians.
1mo
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Designer (Fitchburg, MA, US, 01420)
Fitchburg, Massachusetts, United States
$73k-$104k/yr OnsiteFull Time
Leonardo DRS
Leonardo DRSNASDAQ: DRS: Manufactures advanced electronic systems for defense and military applications.
4+ YOEAssociate's degree (or equivalent) and 4+ years experience; U.S. citizenship required; experience with CAD, bills of material, prototype assembly/testing, and engineering documentation.
CAD
3w
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Engineering Assistant V
Hudson, New Hampshire, United States
$76k-$122k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
3+ YOEHigh school diploma or equivalent; 3+ years prototype manufacturing/assembly experience; ability to read drawings/GD&T; use precision measuring tools; strong communication and organizational skills.
Oracle, Paperless Manufacturing, Microsoft SharePoint