Software Engineer in Test, Embedded Firmware

Cambridge Mobile Telematics • Cambridge, MA

4d

About The Position

Cambridge Mobile Telematics is seeking a Software Engineer in Test to join its IoT group, which develops software for microcontroller-based sensor hardware designed and manufactured in-house. The position focuses on testing embedded firmware for devices that collect sensor data, communicate with back-end systems and nearby devices, support over-the-air firmware upgrades, and manage cryptographically secured storage while operating with limited memory and power.

Requirements

• Bachelor’s degree or equivalent years of experience and/or certification in Computer Science, Electrical Engineering, or a related field.
• At least 2 years of relevant work experience.
• Proficiency in Python programming and willingness to read and understand C.
• Comfort working on the Linux command line and performing basic system administration tasks.
• Experience writing and running automated tests, ideally in a continuous integration environment.
• Familiarity with Git and standard development workflows.
• Strong debugging and troubleshooting skills.
• Ability to collaborate with diverse teams across the globe.
• Eagerness to learn and grow, with a mindset of leaving things better than you found them.
• Ability to balance speed and quality and ask for help when needed.

Nice To Haves

• Familiarity with Docker and cloud platforms such as AWS.
• Exposure to embedded systems, microcontrollers, or low-level programming.
• Experience with hardware test setups, oscilloscopes, multimeters, or reading basic schematics.
• Experience with SQL.
• Interest in performance measurement and instrumentation.
• Knowledge of QA engineering practices such as test planning, defect lifecycle management, and requirements traceability.
• Experience with build systems or release processes.

Responsibilities

• Contribute to developing and maintaining test infrastructure for firmware validation under the guidance of senior engineers.
• Execute and monitor firmware test runs across simulated firmware on Linux servers and real firmware on devices.
• Write and maintain automated tests to improve coverage and make failures more visible.
• Use Python for test harnesses and scripting, and read C to understand the firmware under test.
• Use Linux for development and Git for source-code management.
• Learn and apply knowledge of embedded microcontroller systems in firmware testing.
• Assist with test systems connected to equipment that measures parameters such as power usage.
• Gain familiarity with microcontroller circuit boards, multimeters, benchtop power supplies, and electronic schematics.
• Support web services for test coordination and results display, using knowledge of REST APIs and web application development.
• Triage and investigate test failures, distinguishing firmware regressions from infrastructure issues.
• Complete additional tasks as they arise.

Benefits

• Annual performance bonus.
• Equity may be awarded in the form of Restricted Stock Units (RSUs).
• Medical, dental, vision, and life insurance.
• 401(k) matching.
• Short-term and long-term disability coverage.
• Parental leave.
• Unlimited paid time off, including vacation, sick days, and public holidays.
• Flexible scheduling and a work-from-home policy depending on role and responsibilities.
• Summer Fridays with half days to recharge.
• Wellness, education, and employee assistance programs.
• Employee resource groups.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level