Staff Firmware Engineer

Career-defining. Life-changing.

At iRhythm youll have the opportunity to grow your skills and your career while impacting the lives of people around the world. iRhythm is shaping a future where everyone everywhere can access the best possible cardiac health solutions. Every day we collaborate create and constantly reimagine whats possible. We think big and move fast driven by our commitment to put patients first and improve lives. We need builders like you. Curious and innovative problem solvers looking for the chance to meaningfully shape the future of cardiac health our company and your career

About This Role:

Job Title:

Staff Firmware Engineering

Location:

San Francisco CA (94103) Hybrid (three days onsite two days remote).
Note: The number of days on-site may vary week to week depending on project needs.

Career-defining. Life-changing.

At iRhythm youll have the opportunity to grow your skills and your career while impacting the lives of people around the world. iRhythm is shaping a future where everyone everywhere can access the best possible cardiac health solutions. Every day we collaborate create and constantly reimagine whats possible. We think big and move fast driven by our commitment to put patients first and improve lives. We need builders like you. Curious and innovative problem solvers looking for the chance to meaningfully shape the future of cardiac health our company and your career.

Position Summary:

We are looking for a curious detail-oriented and self-motivated Staff Firmware Engineer to join our small firmware team and help shape the future of our medical devices. This is a hands-on staff-level role for an engineer who can own firmware projects end to end: understanding product needs defining scope making architecture decisions implementing robust code and mentoring other engineers along the way.

You will work on resource-constrained bare-metal systems and contribute across the full firmware lifecycle including new product development iterative product releases debugging failure investigations code reviews documentation and cross-functional problem solving. Success in this role requires strong technical judgment attention to detail and the ability to make sound decisions in a regulated environment with product system and patient impact in mind.

This role also plays a key part in shaping firmware-side cybersecurity partnership with product security and cross-functional stakeholders you will guide technical decisions related to secure architecture and implementation for the device.

This is a hybrid position offering the flexibility to work remotely while maintaining hands-on collaboration with on-site engineering and operations teams. The number of days on-site may vary week to week based on project needs.

Key Responsibilities:

• Own firmware projects from concept through release including requirements scoping architecture implementation integration and support for verification and release activities.
• Serve as a hands-on technical leader on a small firmware team balancing architecture work development mentoring and investigation of complex issues.
• Guide firmware-side cybersecurity decisions in partnership with product security including areas such as cryptographic design choices secure boot and bootloader strategy key hierarchy and storage and secure firmware update or FOTA design.
• Develop high-quality firmware for resource-constrained MCU-based embedded systems with a strong emphasis on reliability readability and maintainability.
• Lead deep root cause investigations for complex and sometimes rare product issues across firmware hardware manufacturing wireless power and system interactions.
• Define and evolve firmware interfaces with electrical engineering manufacturing backend and system software engineering software quality assurance quality and other stakeholders.
• Contribute to documentation and design control artifacts in compliance with IEC 62304 ISO 13485 and related development processes.
• Mentor junior engineers through design discussions code reviews and day-to-day technical guidance.
• Use lab equipment and hands-on debugging techniques to bring up hardware characterize issues and validate behavior on-device.

Minimum Qualifications:

• Bachelors degree in Computer Science Computer Engineering Electrical Engineering or a related field.
• 10 years of hands-on firmware development experience in resource-constrained embedded systems preferably MCU-based and bare-metal.
• Experience owning substantial firmware work or projects from architecture through implementation and release.
• Experience working in a regulated industry. Medical device experience is preferred.
• Strong proficiency in C for embedded systems.
• Strong experience with board bring-up lab debugging and hardware and firmware integration.
• Working knowledge of embedded cybersecurity principles and the ability to guide firmware implementation decisions with familiarity in one or more areas such as cryptographic design choices secure boot or bootloader strategy key storage or secure update design.
• Experience investigating complex system issues and driving root cause to resolution.
• Strong attention to detail and sound engineering judgment.
• Experience working cross-functionally with hardware and software teams in a structured development environment.
• Strong communication analytical and problem-solving skills.

Preferred Qualifications:

• Experience with connected wireless or battery-powered embedded devices.
• Familiarity with technologies such as BLE or cellular connectivity.
• Broader familiarity with cybersecurity concepts relevant to connected embedded or medical devices such as threat modeling vulnerability response and related regulatory expectations.
• Experience contributing to documentation and design control activities in a regulated environment.
• Familiarity with coding standards such as MISRA and with peer code review practices.
• Experience with static and dynamic code analysis techniques for firmware development.
• Experience with version control release processes CI/CD test infrastructure or other development tooling improvements.
• Experience developing embedded firmware using Zephyr RTOS including device tree Kconfig driver development and kernel services.

Whats in it for you:

• This is a full-time position with a competitive compensation package excellent benefits including medical dental and vision insurance (all of which start on your first day) paid holidays and PTO.

Location:

Actual compensation may vary depending on job-related factors including knowledge skills experience and work location.

Estimated Pay Range

As a part of our core values we ensure an inclusive workforce. We welcome and celebrate people of all backgrounds experiences skills and perspectives. iRhythm Technologies Inc. is an Equal Opportunity Employer. We will consider for employment all qualified applicants with arrest and conviction records in accordance with all applicable laws.

iRhythm provides reasonable accommodations for qualified individuals with disabilities in job application procedures including those who may have any difficulty using our online system. If you need such an accommodation you may contact us at

About iRhythm Technologies
iRhythm is a leading digital healthcare company that creates trusted solutions that detect predict and prevent disease. Combining wearable biosensors and cloud-based data analytics with powerful proprietary algorithms iRhythm distills data from millions of heartbeats into clinically actionable information. Through a relentless focus on patient care iRhythms vision is to deliver better data better insights and better health for all.

Make iRhythm your path forward. Zio the heart monitor that changed the game.

There have been instances where individuals not associated with iRhythm have impersonated iRhythm employees pretending to be involved in the iRhythm recruiting process or created postings for positions that do not exist. Please note that all open positions will always be shown here on the iRhythm Careers page and all communications regarding the application interview and hiring process will come from a @ email address. Please check any communications to be sure they come directly from @ email address. If you believe you have been the victim of an imposter or want to confirm that the person you are communicating with is legitimate please contact Written offers of employment will be extended in a formal offer letter from an @ email address ONLY.

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