Electrical Engineer, Senior

The role

A senior or staff-level electrical engineer will own the robot's power electronics and power distribution architecture. This includes the battery management system, bus voltage switching, e-stop integration, precharge, cabling, motor inverters, and EMI mitigation.

What you will do

• Define requirements
• Make system-level architecture decisions
• Take designs from concept through bring-up, testing, and deployment
• Work closely with junior engineers and external layout resources to execute designs
• Miniaturize motor drives by reducing bus capacitance and switching-stage size
• Design power system safety architecture including safe startup, shutdown, fault handling, and battery hot-swapping
• Design and validate a custom battery management system
• Improve motor inverter performance, reliability, thermal performance, and packaging
• Diagnose and mitigate conducted and radiated EMI across the robot

Required qualifications

• Strong electrical engineering fundamentals
• Deep experience designing power electronics systems, ideally in the ~48V range
• Experience with motor inverters, motor drives, or similar high-current switching systems
• Strong PCB design, board bring-up, test, and debug skills
• Comfortable debugging power electronics with scopes, power supplies, current probes, and other lab equipment
• Strong understanding of system-level tradeoffs across electrical, firmware, mechanical, thermal, and cost constraints
• Ability to independently define technical requirements and make architecture and design decisions
• Experience taking complex electrical designs from concept through prototype and validation
• Strong communication skills and ability to lead technical work across multiple contributors
• BS or higher in Electrical Engineering or a related field

Nice to have

• Experience with low-voltage power electronics for robotics, electric aircraft, EV subsystems, industrial automation, or servo systems
• Motor physics and motor control experience
• Control systems or stability analysis experience
• Battery management system design
• Power system safety architecture, including precharge, e-fuses, contactors, and e-stop systems
• EMI/EMC design and mitigation for switching power systems
• Experience designing for battery hot-swap systems
• Experience managing PCB layout contractors or other external engineering resources
• Experience with DFM, supply chain considerations, test coverage, and production bring-up
• Proficiency in Altium for schematic capture and PCB layout

About the company

Reflex Robotics builds general-purpose, AI-powered humanoid robots for the toughest jobs in industry. They build the full robot stack themselves, from cameras and compute to actuators, electronics, and software.