Senior Embedded Engineer

About Us Butlr is the leading AI platform for intelligent spaces. Spun out of the MIT Media Lab in 2019, we combine AI with anonymous body-heat sensing to deliver privacy-first people sensing — no cameras, no PII, privacy enforced at the hardware level. Our sensors power occupancy intelligence for enterprises, senior living communities, healthcare organizations, laboratories, and commercial real estate worldwide, with more than 30,000 privacy-preserving sensors deployed. Butlr has been recognized as a World Economic Forum Technology Pioneer, and our Heatic 2+ sensor won Fast Company's 2025 Innovation by Design Award. We are hiring talented and passionate people to join our team to help us continue our rapid growth. About the Role: We're seeking a Senior Embedded Engineer to work across our MCU-based edge sensors and embedded Linux–based platform. This is a hands-on role at the cutting edge of IoT and edge computing, within a company experiencing rapid growth. You'll own significant pieces of the embedded stack end to end — firmware, OS builds, connectivity, and OTA — and your work on remote access, updates, and cloud connectivity will be pivotal to our product reliability. Responsibilities: Architecture & Collaboration Own the design and implementation of significant components of the embedded software stack for our IoT gateway and edge devices Participate in design and code reviews, and help uphold engineering standards across the embedded team Work closely with hardware, firmware, QA, and cloud teams to integrate and debug across boundaries Evaluate and recommend tools, frameworks, and technologies to support the roadmap Platform & Connectivity Design and develop firmware for our MCU-based edge sensors, including RTOS tasks, drivers, sensor integration, wireless stacks, and low-power design Build and maintain embedded Linux OS images (Yocto or Debian-based), BSPs, kernel modules, and device drivers Implement and maintain connectivity across Ethernet, Wi-Fi, LTE/4G