Principal Embedded Firmware Engineer

Overview

Staff / Principal Embedded Firmware Engineer

Sleep Res is developing next-generation sleep apnea therapy technologies that improve patient outcomes. We are a small, fast-moving R&D team focused on building high-quality medical devices that make a real-world impact.

We are seeking a Staff / Principal Firmware Engineer to lead the design and development of embedded software for our medical devices. This is a high-impact technical leadership role where you will own firmware architecture and execution while contributing directly to product development from concept through commercialization.

You will work closely with cross-functional teams (product, electrical, mechanical, and quality) to translate product requirements into robust, scalable embedded solutions. In addition to hands-on development, you will help define engineering standards, guide architectural decisions, and mentor other engineers.

Our current stack is based on STM
32 microcontroller devices, using Micrium μC/OS III and SEGGER emWin.

• Lead firmware design, development, and verification for Sleep Res products
• Architect scalable embedded systems and guide technical direction
• Translate user and system requirements into reliable firmware solutions
• Contribute to embedded GUI development and user experience implementation
• Participate in code reviews, design reviews, and risk management activities
• Support technical documentation (requirements, design, and test artifacts)
• Collaborate closely with cross-functional engineering teams
• Mentor engineers and help elevate team technical capability (Staff/Principal level)

• BS in EE, CS, Biomedical Engineering, or related field (MS preferred)
• 7+ years (Staff) or 10+ years (Principal) of embedded firmware development experience
• Strong proficiency in C/C++ and ARM-based embedded systems
• Experience developing commercial firmware products
• Hands-on experience with embedded GUI development (e.g., emWin or similar)
• Experience with connected devices (cellular, Wi-Fi, BLE)
• Familiarity with embedded cybersecurity (secure boot, encryption, OTA updates)
• Strong systems thinking, debugging ability, and attention to detail
• Comfortable working in cross-functional, fast-paced environments

• Medical device experience (Class II)
• Experience with FDA submissions (e.g., 510(k)) and DHF documentation
• Signal processing or sensor-driven systems experience
• Exposure to manufacturing, test, and bring-up processes, including working with contract manufacturers
• Startup or early-stage product development experience

• Staff: $170K – $200K
• Principal: $200K – $225K