Embedded Firmware Engineer – Medical Devices (On-site)

Lexington Medical, Inc; Bedford (MA); On-site; USD 80,000 - 110,000; Full time

Job summary

Lexington Medical, Inc. seeks an Embedded Software Engineer to write and debug firmware for the AEON surgical stapler on ARM Cortex-M MCUs using C and C++. You will implement low‑level drivers and the application logic, debugging at the bench with hardware and firmware teams.

You will work with hardware bring‑up, learn FDA design controls and IEC 62304, own modules end‑to‑end, and contribute to verification and documentation. This on‑site role is based in Bedford, MA.

Qualifications

• Bachelor's or Master's degree in Computer Science, Electrical/Computer Engineering, Robotics, or related field.
• 1+ year of hands-on embedded or hardware-focused work (internships/co-ops).
• Experience writing and debugging embedded C/C++.
• Familiarity with microcontrollers and lab/debugging tools.
• Exposure to real-time or bare-metal embedded systems.
• Knowledge of SPI/I2C/UART/CAN; hands-on robotics or electromechanical systems is a plus.
• Experience with FDA design controls or IEC 62304 is a plus.

Responsibilities

• Design, implement, and test embedded firmware on ARM Cortex‑M microcontrollers in C/C++.
• Develop and integrate low‑level drivers and interfaces (SPI, I2C, CAN, UART, USB).
• Build application‑layer logic for motor control and sensor feedback.
• Collaborate with hardware and systems engineers during bring‑up and integration.
• Bench‑test firmware with oscilloscopes and debuggers; isolate firmware vs hardware issues.
• Participate in code reviews and design discussions; write traceable documentation.

Skills

Embedded C/C++

ARM Cortex-M

Firmware development

RTOS (FreeRTOS)

Hardware debugging

Education

Bachelor's or Master's in CS/EE/CE/Robotics

Tools

SPI

I2C

CAN

UART

USB

Job description

Lexington Medical, Inc. seeks an Embedded Software Engineer to write and debug firmware for the AEON surgical stapler on ARM Cortex-M MCUs using C and C++. You will implement low‑level drivers and the application logic, debugging at the bench with hardware and firmware teams.

You will work with hardware bring‑up, learn FDA design controls and IEC 62304, own modules end‑to‑end, and contribute to verification and documentation. This on‑site role is based in Bedford, MA.