Lead Firmware Engineer (Power Conversion Control)

Job Overview

Proper Voltage designs and builds safety-critical battery energy storage systems. This role leads the real-time control firmware for our bidirectional DC/DC power conversion stage — the code that closes current and voltage loops on multiphase interleaved converters, arbitrates operating modes, and commands a safe state when a fault occurs.

This is not a general embedded role that happens to touch PWM. You will implement compensators within a sub-microsecond ISR budget with correct fixed-point scaling and correct ADC-to-PWM trigger phasing, then prove on the bench that the hardware does what the design says it should.

You will work as a pair with our Lead Controls Engineer – Power Electronics. They own what the loop should do and why; you own how it runs on the silicon. You know enough control theory to implement their design faithfully, push back when it costs more cycles than the budget allows, and tell them what the silicon actually delivers.

You will lead implementation within our portable, MCU-agnostic DC/DC control library.

What you'll do

• Real-time control loop implementation for four-switch buck-boost power stages and successor topologies, including multiphase interleaved operation and phase current balancing. • Modules within the portable DC/DC control library: compensator implementations, mode arbitration, scheduler and ISR architecture, and the platform abstraction layer. • Converter protection firmware — cycle-by-cycle current limit,…