Embedded Firmware Engineer

Blue Sages, Inc.; Maple Grove (MN); On-site; USD 110,000 - 150,000; Full time

Job summary

Blue Sages, Inc. seeks an experienced embedded software engineer to develop and maintain the Linux-based console control firmware for a medical device.

You will collaborate with hardware, FPGA, systems, quality, and regulatory stakeholders to ensure deterministic behavior and safe device responses. Responsibilities include implementing embedded C/C++ features, debugging concurrent systems, and building unit and integration tests using Make, Yocto/OpenEmbedded, and related toolchains.

Qualifications

• Professional experience developing production embedded software for medical devices.
• Strong knowledge of C++11+ including memory ownership and low-level data handling.
• Experience with Linux-based embedded systems, cross-compilation, shell tools, and build systems such as Make.

Responsibilities

• Implement and maintain embedded C and C++ features across drivers, managers, state-machine logic, data collection, and signal-processing components.
• Diagnose defects using source inspection, logs, target-device behavior, hardware interfaces, and reproducible test cases.
• Design changes that preserve deterministic behavior, timing requirements, error handling, and safe device responses.
• Develop unit, integration, hardware-in-the-loop, and regression tests appropriate to the change and available test infrastructure.
• Follow all applicable quality-system procedures.

Skills

Embedded C/C++

Linux embedded

Cross-compilation

Make build systems

Concurrency debugging

Unit tests

Tools

Yocto/OpenEmbedded

Docker/Podman

Jenkins

Cross-toolchains

Job description

About the role

We are seeking an experienced embedded software engineer to help develop, maintain, verify, and document the software running on a medical device. The contractor will work on the device's Linux-based console control firmware, collaborating with hardware, FPGA, systems, quality, and regulatory stakeholders.

Responsibilities

• Implement and maintain embedded C and C++ features across drivers, managers, state-machine logic, data collection, and signal-processing components.
• Diagnose defects using source inspection, logs, target-device behavior, hardware interfaces, and reproducible test cases.
• Design changes that preserve deterministic behavior, timing requirements, error handling, and safe device responses.
• Develop unit, integration, hardware-in-the-loop, and regression tests appropriate to the change and available test infrastructure.
• Follow all applicable quality-system procedures.

Required qualifications

• Demonstrated professional experience developing production embedded software in C and C++ for medical devices.
• Strong knowledge of C++11 or later, including memory ownership, low-level data handling, interfaces, and debugging.
• Experience with Linux-based embedded systems, cross-compilation, shell tools, and build systems such as Make.
• Experience debugging concurrent systems using threads, mutexes, queues, timers, and synchronization primitives.

Preferred qualifications

• Experience with Yocto/OpenEmbedded, cross-toolchains, Docker/Podman, Jenkins, and Linux target deployment.
• Experience developing software for medical devices, laboratory instruments, cardiovascular systems, imaging, energy delivery, or other safety-critical products.