Electrical Engineer – UL Power Supply Redesign & Wiring Diagrams (US-Based, Part-Time)

Description:
We’re a US manufacturer of pneumatic tube and security systems. We need an experienced electrical engineer to help refine the design of a UL-rated power supply that we’re redesigning for a new product series. We also need help producing custom product wiring diagrams.

This is a part-time contract of about 10 hours per week for 4 weeks, and it may be extended.

Scope of work:
Review and refine our existing power supply / control board design
Recommend design changes that support UL compliance for the new product series
Create or update custom product wiring diagrams
Document design decisions and changes clearly so our internal team can pick up the work

Required:
Proven experience designing AC/DC power supplies or motor control boards
Hands-on experience designing products to UL standards and supporting UL certification
Ability to produce clean, production-ready wiring diagrams and schematics
US-based and available during Central Time business hours
Willing to sign an NDA

Preferred:
Experience with electromechanical equipment (motors, blowers, solenoids, sensors)
Experience with [your tools, e.g., Altium, KiCad, AutoCAD Electrical Solid works]

To apply, please include:
A short summary of historical experience for a power supply or motor control board you designed, including the UL standard involved
Examples of wiring diagrams or schematics you’ve produced, with sensitive details removed
Your hourly rate and your availability over the next 4 weeks
Which design tools you use/prefer