Company Overview

Signifier Medical Technologies Limited is headquartered in London, UK and is a fast-growing and award-winning international medical technology and device company with operations based in the U.S.A, Canada and Europe. We develop innovative, non-invasive devices for the treatment of sleep disordered breathing.

Job Overview
The Firmware Engineer II leads all firmware initiatives across sustaining and next‐generation products, ensuring reliable, scalable, and maintainable embedded firmware. This role owns project execution on multiple platforms, from concept through verification, including prototype testing and design transfer. The Firmware Engineer II partners closely with all of R&D and QA, to deliver releases that are robust,
manufacturable, and compliant. AI‐assisted development is expected to improve productivity, quality, and documentation in alignment with our QMS requirements.

Duties and Responsibilities

These duties, responsibilities and related tasks may include, but are not limited to, the following:
Develop and debug firmware for next-gen and sustaining products
Lead architecture design, planning, risk tracking, and documentation release
Program embedded C/C++ on 32‐bit MCUs, including real‐time logic and BLE 5.x features
Create diagnostics, manufacturing tests, and OTA update workflows
Use AI tools within the QMS to accelerate coding, test creation, documentation, and reviews

Related Tasks:

Produce IEC 62304–aligned documentation, traceability, release notes, and test specs
Engineer safety, reliability, and maintain requirements‐to‐verification traceability
Work with EEs for board bring‐up, troubleshooting, and debugging new hardware
Build user/test software interfaces to support bench testing and manufacturing
Support field, supplier, and manufacturing investigations for RCA and corrective actions

Ideal Technical Knowledge/Technologies Used/Achievements:

Experience in regulated development (e.g., IEC 62304 lifecycle and verification)
Real‐time software and RTOS fundamentals; TI‐RTOS exposure preferred
Experience with OTA update architectures (bootloader, image validation, rollback)
Power management expertise for battery products

Beneficial Technical Knowledge/Technologies Used/Achievements:

Exposure to regulated or quality‐managed development (traceability, design controls)
Experience defining factory diagnostics, build validation, or service/update workflows across multiple SKUs
Experience with closed‐loop control in embedded systems (sensing, regulation, feedback)
Secure communications and data integrity techniques (e.g., CRCs, authenticated updates) appropriate for embedded devices
Python or similar for build/test script automation

Minimum Experience:

3–6 years of embedded firmware experience in C/C++ on 32‐bit MCUs
Prior responsibility for leading firmware workstreams or features from requirements through verification on more than one platform/product
Hands‐on BLE development and debugging (services/roles, connection/pairing
Proficiency with SPI, I²C, UART and bench‐level debug tools (JTAG/SWD, logic analyzer, oscilloscope)
Comfortable with Git, code review, and working within a quality system

Education:

BS in Electrical Engineering, Computer Engineering, Computer Science, or related field (or equivalent practical experience)
MS preferred

Signifier Medical Technologies is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state or local law.

Company Description

Driving Innovation in the Sleep Market
Signifier Medical Technologies (SMT), previously known as eXciteOSA® , is a medical technology company focused on the development and commercialisation of innovative and non-invasive solutions for patients with snoring and sleep disordered breathing conditions.

Pioneers in challenging the wisdom of conventional snoring and sleep apnea treatments, we’ve created the first daytime therapy that tackles the root cause of sleep disordered breathing by physiologically retraining the airway against collapse.

The Vision of Signifier Medical Technologies: eXciteOSA

We aspire to revolutionize sleep apnea therapy with the novel and ground-breaking eXciteOSA sleep apnea device that will help solve the conditions of snoring and mild sleep apnea, making a real impact on the lives of millions of people globally, in an area with significant unmet medical needs.

Pay: From $120,000.00 per year

Benefits:

401(k) matching
Dental insurance
Employee assistance program
Health insurance
Health savings account
Life insurance
Paid time off
Vision insurance

Application Question(s):

Will you now or in the future require sponsorship to be eligible to work in the U.S.?
Relocation is not available for this position. Seeking local candidates ONLY. Are you currently a resident of North Carolina?

Education:

Bachelor's (Required)

Experience:

C++: 3 years (Required)
Debugging: 3 years (Required)
GIT: 3 years (Required)

Ability to Commute:

Wake Forest, NC 27587 (Required)

Work Location: In person

Signifier Medical

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