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Home Based Prototype Build Engineer Jobs in New Jersey

Weiss-Aug, is a leading provider of advanced manufacturing and engineering solutions with advanced ... Expanding our team is paramount, bringing in fresh perspectives, ideas and broad-based talent to ...

Weiss-Aug, is a leading provider of advanced manufacturing and engineering solutions with advanced ... Expanding our team is paramount, bringing in fresh perspectives, ideas and broad-based talent to ...

CRO Engineer

Parsippany, NJ · On-site

$115K - $125K/yr

Build experiment variants based on approved designs across web and app * Ensure experiments are ... Group Auto Insurance, Group Home Insurance, Pet Insurance, Legal Assistance, Identity Theft ...

CRO Engineer

Parsippany, NJ · On-site

$115K - $125K/yr

Build experiment variants based on approved designs across web and app * Ensure experiments are ... Group Auto Insurance, Group Home Insurance, Pet Insurance, Legal Assistance, Identity Theft ...

AI Platform Engineer

Camden, NJ · On-site

$105K - $130K/yr

... Technology, you will prototype, build, test, and operationalize AI-assisted and agentic ... This role is primarily technical and office-based, with occasional interaction in operational ...

Role requires regular interaction with production floor, prototype build areas, test areas, machine ... Hourly rate will be $32 - $36, based on experience. About Us Company Overview OPEX Corporation is ...

Role requires regular interaction with production floor, prototype build areas, test areas, machine ... Hourly rate will be $32 - $36, based on experience. Company Overview OPEX Corporation is more than ...

Role requires regular interaction with production floor, prototype build areas, test areas, machine ... Hourly rate will be $32 - $36, based on experience. Company Overview OPEX Corporation is more than ...

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Medical, Dental, Vision, PTO

Posted 22 days ago


Job description

Location: Princeton, New Jersey

Company: Princeton Critical Minerals


Position Overview:

Princeton Critical Minerals is seeking a skilled and hands-on Prototype Technician to oversee daily workshop operations while actively contributing to machining, fabrication, and maintenance tasks. This role requires a balance of leadership, technical expertise, and operational efficiency to support production and R&D activities.


Key Responsibilities:

  • Lead day-to-day workshop operations, ensuring a safe, organized, and productive work environment.
  • Build, fabricate, assemble, and test prototypes, pilot systems, and production equipment.
  • Operate and maintain machining equipment, including CNC mills, lathes, manual machine tools, fabrication equipment, and welding systems.
  • Work directly with engineering teams to convert concepts, CAD models, and drawings into functional hardware.
  • Support rapid design-build-test cycles by identifying practical manufacturing solutions and design improvements.
  • Supervise and mentor technicians, machinists, interns, and contractors as needed.
  • Manage workshop resources, including equipment, tooling, consumables, and inventory.
  • Coordinate preventive maintenance and troubleshoot mechanical systems like conveyors, linear actuators, electrical, pneumatic, and hydraulic systems.
  • Establish workshop best practices, safety procedures, and quality standards.
  • Source materials, components, and fabrication services from external vendors when required.
  • Support field deployments, pilot installations, and equipment commissioning activities.
  • Drive continuous improvement initiatives to increase workshop efficiency and reduce project turnaround time.


Qualifications:

  • 5+ years of hands-on experience in machining, fabrication, prototyping, or workshop operations.
  • Strong experience with CNC machining, manual machining, fabrication, and mechanical assembly.
  • Ability to read and interpret technical drawings and specifications
  • Demonstrated experience building and troubleshooting mechanical systems.
  • Knowledge of safety standards and best practices in a workshop environment
  • Excellent organizational and communication skills


Preferred Qualifications:

  • Experience working in startups, R&D organizations, pilot plants, or product development environments.
  • Proficiency with CAD/CAM software and design-for-manufacturing principles.
  • Welding, metal fabrication, and structural assembly experience.
  • Familiarity with pumps, conveyors, industrial automation, instrumentation, or process equipment.
  • Experience supporting field operations in industrial, mining, water treatment, or chemical processing environments.
  • Ability to work across disciplines including mechanical, electrical, controls, and manufacturing engineering.


Education & Experience:

  • High school diploma or equivalent required; technical certification or associate degree preferred
  • 5+ years of machining experience; 2+ years in a leadership role preferred


Compensation & Benefits:

  • Competitive salary based on experience
  • Health, dental, and vision insurance
  • Paid time off and holidays
  • Opportunities for professional growth and advancement