Battery-Powered Electromagnet Design

I need a skilled engineer to design and build a battery-powered electromagnet for a consumer electronics application.

Key requirements:
- Strength of the magnetic field
- Size and weight optimization
- Efficient power consumption

Ideal skills and experience:
- Proficiency in electromagnet design
- Experience with battery-powered devices
- Knowledge of power consumption optimization
- Background in consumer electronics development

Please provide examples of previous work and relevant qualifications.