Senior Firmware Engineer

Base pay range

$/yr - $/yr

At Eko, we’re dedicated to providing healthcare professionals with industry leading digital tools to hear and understand their patients’ hearts and lungs. With our platform, clinicians can detect cardiopulmonary disease with higher accuracy, diagnose with more confidence, manage treatment effectively, and ultimately give their patients the best care possible. With over $165M in funding from partners like 3M and the Mayo Clinic, Eko has become one of the fastest growing digital health companies, doubling our customer base in the last year to over 500,000 clinicians across 4,000 U.S. hospitals.

We’ve built a tremendously talented, diverse, and mission driven team and are proud to be certified as a Great Place to Work®. Together we are committed to investing in each other and our mission to ensure all patients have access to high quality care.

• Design develop and test embedded firmware for next-generation digital stethoscopes
• Maintain and enhance firmware for currently shipping products
• Quickly learn existing codebases and extract learnings for future development
• Collaborate with other firmware developers on architectural decisions, code standards, and system design for a cohesive product portfolio
• Architect real-time systems using FreeRTOS and other embedded operating systems
• Optimize firmware for code size, RAM usage, and execution efficiency based on system constraints
• Develop and maintain device drivers for peripherals including audio amplifiers, PMICs, displays, sensors, and communication interfaces
• Implement Bluetooth Low Energy communication stacks and custom characteristics
• Transform loosely‑defined product concepts into working prototypes, iterating rapidly with the product team to refine specifications
• Collaborate with electrical engineers on component selection, schematic review, and system architecture decisions
• Conduct code reviews, establish firmware best practices
• Navigate medical device regulatory requirements and contribute to design control documentation

• 10+ years of embedded firmware development experience
• Deep expertise in C/C++ for embedded systems
• Proven experience with FreeRTOS, Zephyr, or similar embedded RTOS environments
• Strong understanding of embedded system optimization: code size, RAM footprint, and CPU cycle management
• Experience developing bare‑metal drivers for I2C, SPI, UART, I2S, and other communication protocols
• Solid knowledge of Bluetooth Low Energy (BLE) stack implementation and custom GATT service development
• Experience with ARM Cortex‑M microcontrollers (or similar embedded architectures)
• Proficiency with embedded debugging tools (JTAG/SWD debuggers, logic analyzers, oscilloscopes)
• Understanding of power management strategies for battery‑operated devices
• Experience working from electrical schematics and datasheets to implement hardware interfaces

• Experience in medical device development (FDA regulated environments, IEC 62304, design controls)
• Background in consumer electronics or consumer medical devices
• Knowledge of digital signal processing (DSP) implementation on embedded platforms
• Experience with audio signal processing or acoustic measurement systems
• Familiarity with wireless certification processes (FCC, CE, Bluetooth SIG)
• Understanding of hardware component sourcing, bill of materials (BOM) optimization, and design for manufacturing (DFM)
• Experience with Python or other scripting languages for test automation and tooling
• Previous work in startup environments
• Contributions to open‑source embedded projects

• Eko was recognized by “Great Place to Work” in 2020 and 2021
• Paid‑time off
• Medical/Dental/Vision, Disability + Life Insurance
• One Medical membership
• Parental Leave
• 401k Matching
• Flexible schedules
• Wellness programs (Wellness Wednesdays, Time off)
• Wellness perks (Headspace, Ginger, Aaptiv, Physera)
• Learning and Development stipend

Not Applicable

Full‑time

Engineering and Information Technology

Transportation, Logistics, Supply Chain and Storage

Eko is proud to be an equal opportunity employer and welcome people of different backgrounds, experiences, abilities and perspectives. We celebrate diversity and are committed to building a diverse and inclusive team.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.