12 prototype jobs at 11 companies in Roscoe, IL

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Prototype Technician
Rockford, Illinois, United States
$24-$29/hr OnsiteFull Time
siffron
siffron: Designs and manufactures retail merchandising and display systems
3+ YOEFabrication, machining, welding; read drawings; set up shop equipment; work on prototypes; 3-5 years experience preferred.
Lathes, Mills, CNC, Press brake, Welding, CAD, Solidworks, Microsoft Office
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Senior Game Designer (Apex Legends)
Chatsworth or Vancouver or Madison
$128k-$191k/yr HybridFull Time
Electronic Arts
Electronic ArtsNASDAQ: EA: Develops and publishes video games and interactive entertainment software.
5+ YOE5+ years game design experience on multiplayer/live-service titles; strong prototyping, scripting, 3D action fundamentals, balance, playtesting, and ability to take characters from prototype through release.
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Senior Gameplay Designer - Weapons/Combat (Apex Legends)
Los Angeles or Vancouver or Madison
HybridFull Time
Electronic Arts
Electronic ArtsNASDAQ: EA: Develops and publishes video games and interactive entertainment software.
5+ YOE5+ years as a game designer on a competitive multiplayer title; experience prototyping, balancing, and scripting for live service gameplay.
Scripting
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Senior Technical Product Manager
San Francisco or Madison
$180k-$275k/yr HybridFull Time
MGT Insurance
MGT Insurance: AI-driven neo-insurer providing commercial insurance for small businesses.
Deep product experience building AI-enabled systems, strong technical literacy and coding ability, excellent communication and storytelling, growth-stage experience, ability to prototype and operate end-to-end.
Amplitude, Mixpanel, LaunchDarkly
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Car Chief– AO Racing Team
St. Charles, Illinois, United States
OnsiteFull Time
AO Racing
AO Racing: Operates professional sports car racing teams in endurance championships
10+ YOE2+ Mgmt10+ years motorsports experience, 2+ years as car/crew chief, prototype/Oreca experience preferred, machining proficiency, leadership and communication skills, valid US passport for international travel.
HH Data Management, Microsoft Excel, Word, lathes, mills, drill presses, band saws
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Engineering Technician II
Whitewater, Wisconsin, United States
OnsiteFull Time
Generac
GeneracNYSE: GNRC: Manufactures backup power generators and energy technology solutions.
2+ YOEHigh school diploma, 2 years relevant experience, proficiency with Microsoft Office, able to perform electrical/mechanical/environmental tests, use measurement devices, assemble prototypes, and document results.
Microsoft Office, ISO 17025, DVOM, clamp meter, IR, thermometer, engine dynamometer
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Principal Engineer - Electrical
Round Lake, Illinois, United States
$112k-$154k/yr HybridFull Time
Baxter
BaxterNew York Stock Exchange: BAX: Develops and manufactures medical devices, pharmaceuticals, and IV solutions.
5+ YOEBS in Electrical Engineering, 5+ years hardware design experience (medical/regulatory preferred), analog/digital circuit and PCB design, lab equipment proficiency, prototype development, testing, and regulatory documentation.
PCBA, PCB, oscilloscope, current probes, spectrum analyzer, DMM
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Product Engineer
Fort Atkinson, Wisconsin, United States
OnsiteFull Time
Spacesaver
Spacesaver: Manufacturer of high-density mobile shelving and specialized storage systems.
2+ YOEDegree in engineering or mechanical design technology with relevant years of experience; solid modeling experience (Creo/ProE); knowledge of sheet metal, welding, machining; ERP and Microsoft Office proficiency; ability to prototype and perform mechanical calculations.
Creo/ProE, ERP, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project
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R&D Scientist (Madison, WI, US, 53711)
Madison, Wisconsin, United States
OnsiteFull Time
AMETEK
AMETEKNYSE: AME: Manufacturer of electronic instruments and electromechanical devices.
6+ YOEMS or PhD in Materials Science/Engineering/Physics required; 6+ years industry experience; experience with UHV, high voltage, ion/electron optics, prototyping, CNC, Solidworks; proficiency with Python, Lab-View, and simulation tools.
Lorentz, Comsol, Python, AI code generation, National Instruments Lab-View, Mathematica, MatLab, Solidworks, CNC
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R&D Senior Engineer
Lake Zurich or North Barrington
$95k-$160k/yr OnsiteFull Time
Medical Murray
Medical Murray: Development and contract manufacturing of complex medical devices.
3+ YOEBachelor's or Master's in biomedical/mechanical/related engineering required; 3+ years medical device engineering experience; SolidWorks and Microsoft Office proficiency; experience with design controls, V&V, risk management, prototyping, and manufacturing transfer.
SolidWorks, Microsoft Office
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Senior Mechanical Systems Engineer, PDM
Madison, Wisconsin, United States
OnsiteFull Time
Realta Fusion
Realta Fusion: Developing compact, modular magnetic mirror fusion energy systems.
5+ YOEBS in Mechanical Engineering plus 5+ years' experience; expert PDM/PLM and CAD skills (SolidWorks, Siemens, ANSYS, COMSOL, PTC); BIM (Revit/Navisworks); GD&T and P&ID proficiency; prototyping and large-scale manufacturing experience; PDM administration and mentorship.
PDM/PLM, SolidWorks, Siemens, ANSYS, COMSOL, PTC, Revit, Navisworks, ERP, EAM, MCNP, OpenMC, CMMs, laser trackers, FARO arms, CAD
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Mobile app Developer (Paid Internship)
Fort Atkinson or Madison
$30/hr HybridMultiple Commitments Available
Complete TransPack Solutions
Complete TransPack Solutions: Provides transport packaging management and logistics services for manufacturers.
1+ YOEBuild a mobile prototype with on-device object detection using YOLO variants; prepare annotated dataset (300–500 images); train, optimize, and export models (CoreML/TensorFlow Lite); embed models on edge; proficiency in Python, OpenCV/PyTorch/TensorFlow, and mobile frameworks; US work authorization and portfolio/GitHub required.
Python, YOLOv8, YOLOv11, YOLO-NAS, YOLOX, Roboflow, CVAT, CoreML, TensorFlow Lite, OpenCV, PyTorch, TensorFlow, Apple Neural Engine, GPU, Dart/Flutter, JavaScript/React Native, Swift, Kotlin, GitHub