Firmware Engineer

The posting, as ButterflyMX wrote it

OUR MISSION

ButterflyMX is on a mission to empower people to automate property access, operations, and security from a single platform. Our products are installed in more than 20,000+ multifamily, commercial, gated communities, and student-housing properties worldwide, including properties developed, owned, and managed by the most trusted names in real estate. Our features are designed for developers, owners, property managers, and tenants and our products lower operating costs and improve tenant satisfaction.

OUR SOLUTION

Developers and owners no longer need to run building wiring or install in-unit hardware. Property managers can grant building access, revoke permissions, and review entry logs from an online dashboard. Residents can open doors from their smartphones, issue visitor access, and see who is trying to enter the building.

OUR CULTURE & VALUES

Fantastic people are the key to our success. As a distributed, primarily remote workforce, we’re looking for more intelligent, passionate, collaborative, ai-forward, and down-to-earth individuals to join our growing team. We’re driven by a shared commitment to excellence and innovation, grounded in our core values: We delight our customers, We take ownership, We are a community of collaborators, We speak up, We think big and do small, and We are tenacious.

ROLE OVERVIEW

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.

This role requires a rare combination of strong firmware development skill, deep hardware intuition, and practical embedded systems judgment. The successful candidate will be comfortable working close to the hardware — registers, buses, timing, interrupts, memory, power, analog behavior, digital interfaces, and real-world failure modes — while also understanding how embedded devices interact with secure cloud-connected systems.

Our products span multiple embedded environments, including bare-metal microcontroller firmware with main-loop architectures, RTOS-based systems including Zephyr, and embedded Linux platforms. This engineer must be able to write production-quality code independently, analyze and optimize firmware at a low level, troubleshoot hardware/firmware interactions, and use AI tools intelligently to accelerate development without outsourcing engineering judgment.

This is a hands-on, high-impact engineering role for someone with initiative, tenacity, curiosity, and the ability to solve ambiguous problems across hardware, firmware, manufacturing, and field reliability.

RESPONSIBILITIES

• Develop Production-Ready Embedded Firmware
• Design, write, debug, and maintain firmware across bare-metal, RTOS/Zephy

[…]
g design notes, ICDs, state diagrams, test plans, debug guides, release notes, and technical decision records.

• Strong initiative, tenacity, lateral thinking, and comfort operating in fast-moving product development environments.
• AI-forward mindset with the engineering maturity to use AI tools as accelerants, not substitutes for deep technical understanding.

COMPENSATION

The expected base salary range for this position is $150,000-$190,000. Actual compensation will depend on factors including budget, skills, experience, location, and internal equity. This position may also be eligible for bonuses, equity, or other forms of compensation, where applicable.

BENEFITS

• Comprehensive Medical, Dental and Vision plans (ButterflyMX covers 80% of the cost) starting day 1
• 401(k) plan with a match
• 10 paid holidays, 20 vacation days, 5 sick days, 3 floating holidays
• Basic Life and Accidental Death and Dismemberment Insurance (ButterflyMX covers 100% of the cost)
• Short and Long Term Disability (ButterflyMX covers 100% of the cost)
• Paid Family Leave
• Employee Assistance Program
• Quarterly self-care stipends
• Access to optional benefits including pre-tax flexible healthcare spending accounts (FSA and HSA), Dependent Care FSA, and Commuter Benefits, as well as optional Supplemental Life, AD&D, Hospital Indemnity, Legal, Accident, Critical Illness, Pet, and Personal Liability Insurance
• And more!

ButterflyMX is an equal opportunity employer and we value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. You must have the authorization to work in the US to become an employee. We strive to create an accessible and inclusive experience for all candidates and employees. If you need reasonable accommodations during the application or the recruiting process, please let our recruiting team know.