Rapid Prototype Engineer II

Candidate should live within driving distance of the following areas: Wichita, KS; Lawton OK; or Round Rock, TX

Job Purpose/Summary

This role is for a Rapid Prototype Engineer II to design, fabricate, assemble, and validate hardware prototypes supporting research and development efforts across mechanical, electrical, and integrated systems.

You will work alongside hardware, electrical, and software engineers to rapidly translate concepts into functional prototypes using a combination of in-house production capabilities and external manufacturing partners. This role includes hands-on ownership of fabrication, assembly, wiring, and system integration, while coordinating outsourced production and finishing processes as needed.

This is an individual contributor role with responsibility across prototype development, vendor coordination, and build/test execution in fast-paced, iteration-driven environments.

Duties and Responsibilities

• Design, fabricate, and modify prototype components using variety of tools (e.g., 3D printers, CNC machines, laser cutters, and hand tools).
• Evaluate designs and select appropriate materials, fabrication methods, and finishing processes (e.g., anodizing, painting, coating, polishing).
• Build and assemble mechanical and electro-mechanical systems, including structural, enclosure, and mounting solutions.
• Design and fabricate wiring harnesses and cables, including cutting, crimping, soldering, labeling, and routing for prototype systems.
• Integrate electrical components, connectors, and subsystems, ensuring reliable and serviceable wiring practices.
• Coordinate with third-party vendors for outsourced manufacturing (e.g., machining, PCB fabrication, cable assemblies, finishing services).
• Manage vendor relationships, including sourcing, quoting, scheduling, and quality verification of delivered parts.
• Perform functional testing and quality assurance on prototypes to validate performance, reliability, and design intent.
• Troubleshoot mechanical and electrical issues, and iterate on designs based on test results and team feedback.
• Support system integration efforts across mechanical, electrical, and embedded subsystems.
• Document build processes, wiring diagrams, bill of materials (BOMs), and vendor selections.
• Source tools, materials, and equipment required to support prototyping and fabrication efforts.
• Package and ship prototypes to internal teams and partners, ensuring proper handling, protection, and documentation.
• Maintain a safe, clean, and organized prototyping and production environment.
• Collaborate with cross-functional engineering teams to support rapid development cycles.
• Complete other duties as requested.
  
  

Qualifications

• Eligible to obtain a U.S. Security Clearance – U.S. Citizenship required.
• Formal education in Mechanical Engineering, Electrical Engineering, Manufacturing Engineering, or a related field, or a suitable mix of education and hands-on experience.
• Professional experience working in prototyping labs, machine shops, or makerspace environments.
• Hands-on experience with fabrication tools and processes (e.g., 3D printing, CNC machining, laser cutting, manual fabrication).
• Experience building and assembling mechanical and electro-mechanical systems.
• Experience designing and fabricating wiring harnesses and cables, including crimping, soldering, connector selection, and cable management.
• Strong understanding of materials (plastics, metals, composites) and finishing processes.
• Experience coordinating with external vendors and managing outsourced manufacturing.
• Ability to read and interpret technical drawings, CAD models, schematics, and wiring diagrams.
• Strong troubleshooting and problem-solving skills across mechanical and electrical systems.
• Ability to manage multiple prototype efforts in parallel in fast-paced environments.
• Strong communication skills for collaboration with cross-functional teams.
  
  

Preferred Qualifications

• Experience with CAD software (e.g., SolidWorks, Fusion 360, or similar).
• Experience with basic electronics prototyping and integration (PCB handling, power systems, connectors).
• Familiarity with design for manufacturability (DFM) and design for assembly (DFA) principles.
• Experience working with rapid prototyping and low-volume manufacturing vendors.
• Knowledge of cable standards, harness best practices, and environmental considerations (strain relief, shielding, routing).
• Experience supporting early-stage product development or research programs.
  
  

Working conditions

• Employees may be called upon to participate in in-person meetings, trainings, or company functions at Knowmadics offices or other designated locations. Travel in support of business operations may also be required, and employees are expected to comply with these obligations as part of their position.
  
  

Physical requirements

May include standing for extended periods, working with tools and machinery, lifting or moving materials or tools, and handling small components.

Direct reports

None