Sr. Embedded Software Engineer

3M•Monroe, NC

2d•Onsite

About The Position

As a Senior Embedded SW Engineer for the Self-Contained Breathing Apparatus (SCBA)/Fire Solutions R&D Team located in Monroe, NC you will make an impact by designing, testing, and sustaining embedded systems. Our designs incorporate microcontrollers, analog circuitry, power distribution/management, displays, batteries, and other components found in portable, rugged, electromechanical products. You’ll work collaboratively with Electrical Engineers, Mechanical Engineers, Manufacturing, Quality, Test and other disciplines as part of a combined integrated cross-functional team.

Requirements

Bachelors degree in engineering or computer science from an accredited university (completed and verified prior to start)
Three (3) years of embedded software design in a private, public, government, or military environment
Must be legally authorized to work in country of employment without sponsorship for employment visa status (e.g., H1B status).

Nice To Haves

Experience developing firmware on STM32 MCUs, including configuration and optimization of peripherals such as ADC, DAC, SPI, I2C, UART, DMA, timers, and GPIO
Experience implementing and debugging multitasking applications using the Cesium RTOS, including task scheduling, synchronization, and inter‑task communication
Experience integrating and optimizing radio technologies such as BLE, LoRa, UWB, and other sub-GHz or 2.4 GHz protocols
Experience collaborating with hardware teams to validate board bring‑up and peripheral functionality on STM32 platforms
Experience implementing and maintaining bootloaders, secure firmware update mechanisms, and device provisioning workflows
Experience using IAR Embedded Workbench for building, debugging, and performance analysis of embedded applications
Experience working within GitHub‑based workflows including branching strategies, PR reviews, issue tracking, and CI pipelines
Experience applying DevOps practices for embedded systems, including automated builds, static code analysis, and test automation
Experience ensuring high code quality through use of MISRA guidelines, coding standards, static analysis tools, and peer reviews
Experience using professional embedded development tools including JTAG/SWD debuggers, logic analyzers, protocol analyzers, and RF test equipment
Experience diagnosing and resolving complex system‑level issues involving firmware, hardware interactions, timing, and concurrency
Experience maintaining accurate and high‑quality documentation for firmware architecture, APIs, communication interfaces, and design rationale

Responsibilities

Design, develop, and maintain embedded firmware for microcontroller‑based systems
Leverage advanced AI‑assisted development and analysis tools to enhance firmware design, validation efficiency, and system‑level troubleshooting
Implement low‑level drivers, communication protocols, and real‑time control algorithms
Optimize firmware for performance, memory usage, power consumption, and reliability
Integrate firmware with hardware, sensors, actuators, and external interfaces
Develop and execute unit tests, integration tests, and automated validation routines
Troubleshoot system‑level issues using oscilloscopes, logic analyzers, debuggers, and diagnostic tools
Create and maintain technical documentation, including design specifications and interface definitions
Support product planning by estimating development effort, identifying risks, and proposing solutions

Benefits

3M offers many programs to help you live your best life – both physically and financially.
To ensure competitive pay and benefits, 3M regularly benchmarks with other companies that are comparable in size and scope.
Medical, Dental & Vision, Health Savings Accounts, Health Care & Dependent Care Flexible Spending Accounts, Disability Benefits, Life Insurance, Voluntary Benefits, Paid Absences and Retirement Benefits

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