Sr. Embedded Software Engineer

Job Description
Sr Embedded Software Engineer
Collaborate with Innovative 3Mers Around the World
Choosing where to start and grow your career has a major impact on your professional and personal life, so it’s equally important you know that the company that you choose to work at, and its leaders, will support and guide you. With a wide variety of people, global locations, technologies and products, 3M is a place where you can collaborate with other curious, creative 3Mers.
This position provides an opportunity to transition from other private, public, government or military experience to a 3M career.
The Impact You’ll Make in this Role
Responsibilities
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. Responsibilities include:

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

Your Skills And Expertise
To set you up for success in this role from day one, 3M requires (at a minimum) the following qualifications:

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

Additional qualifications that could help you succeed even further in this role include:

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

Work location:

Work location: This role follows an on-site working model, requiring the employee to work at least four days a week at the 3M in Monroe, NC.

Travel: May include up to 10% domestic/international
Relocation Assistance: Is authorized
Must be legally authorized to work in country of employment without sponsorship for employment visa status (e.g., H1B status).
Supporting Your Well-being
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.
Resources for You
For more details on what happens before, during and after the interview process, check out the Insights for Candidates page at 3M.com/careers.
Applicable to US Applicants Only:The expected compensation range for this position is $122,292 - $149,468, which includes base pay plus variable incentive pay, if eligible. This range represents a good faith estimate for this position. The specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate’s relevant knowledge, training, skills, work location, and/or experience. In addition, this position may be eligible for a range of benefits (e.g., Medical, Dental & Vision, Health Savings Accounts, Health Care & Dependent Care Flexible Spending Accounts, Disability Benefits, Life Insurance, Voluntary Benefits, Paid Absences and Retirement Benefits, etc.). Additional information is available at: https://www.3m.com/3M/en_US/careers-us/working-at-3m/benefits/.
Good Faith Posting Date Range 03/31/2026 To 04/30/2026 Or until filled
All US-based 3M full time employees will need to sign an employee agreement as a condition of employment with 3M. This agreement lays out key terms on using 3M Confidential Information and Trade Secrets. It also has provisions discussing conflicts of interest and how inventions are assigned. Employees that are Job Grade 7 or equivalent and above may also have obligations to not compete against 3M or solicit its employees or customers, both during their employment, and for a period after they leave 3M.
Learn more about 3M’s creative solutions to the world’s problems at www.3M.com or on Instagram, Facebook, and LinkedIn @3M.
Responsibilities of this position include that corporate policies, procedures and security standards are complied with while performing assigned duties.
Safety is a core value at 3M. All employees are expected to contribute to a strong Environmental Health and Safety (EHS) culture by following safety policies, identifying hazards, and engaging in continuous improvement.
Pay & Benefits Overview: https://www.3m.com/3M/en_US/careers-us/working-at-3m/benefits/
3M does not discriminate in hiring or employment on the basis of race, color, sex, national origin, religion, age, disability, veteran status, or any other characteristic protected by applicable law.
Please note: your application may not be considered if you do not provide your education and work history, either by: 1) uploading a resume, or 2) entering the information into the application fields directly.
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