# Firmware Engineer at ButterflyMX

- Company: ButterflyMX
- What the company does: ButterflyMX is your complete property access solution, providing a secure, convenient, and affordable way to manage and grant access on the go. Backed by Volition Capital.
- Company website: https://butterflymx.com
- Type: Startups
- Level: Mid level
- Location: Irvine Office/Warehouse
- Work setup: On-site
- Pay: $150K to $190K base salary per year (USD)
- Posted: 2026-09-15
- Apply by: 2026-10-30
- Apply: https://jobs.ashbyhq.com/butterflymx/6c7e9c7e-e244-4aeb-8d0c-c00aa1154234
- Page: https://www.1752.vc/careers/jobs/butterflymx-firmware-engineer/

## About the role

At ButterflyMX, firmware sits at the critical intersection of electronics, embedded systems, product reliability, device security, and customer experience. We are seeking an exceptional Firmware Engineer to help design, build, debug, secure, and optimize the embedded software that powers our next generation of access control, intercom, IoT, wireless, and connected hardware products.

## What they're looking for

- 5+ years of hands-on embedded firmware development experience, 8+ years is preferred for senior-level candidates
- Strong firmware development skills in C/C++, with experience writing production code for resource-constrained embedded systems
- Hands-on experience with bare-metal microcontroller firmware, RTOS-based systems, and embedded Linux. Experience with Zephyr is strongly preferred
- Strong understanding of microcontroller architecture, interrupts, timers, DMA, memory maps, bootloaders, watchdogs, peripheral drivers, low-power modes, and low-level register programming
- Deep practical understanding of electronics hardware, including digital and analog domains, power regulation, ADCs, signal conditioning, filtering, impedance, noise, grounding, and signal integrity
- Experience debugging real hardware using oscilloscopes, logic analyzers, debuggers, programmers, multimeters, and other lab equipment

Tags: Engineering