Embedded Firmware Test Engineer II – IoT Automation

Cambridge Mobile Telematics; Massachusetts; On-site; USD 86,000 - 107,000; Full time

Benefits offered by this job

Equity: RSUs

Medical, Dental, Vision, Life

401(k) matching

Unlimited PTO

Summer Fridays

Job summary

Cambridge Mobile Telematics (CMT) is seeking a Software Engineer in Test II, Embedded Firmware to bolster our IoT group. You will build and maintain test infra for firmware validation, run tests on both simulated Linux and real device firmware, and develop automated tests using Python with C exposure.

You will work with embedded microcontroller systems, power-metrics test setups, and REST‑based test coordination while collaborating with global teams to deliver robust safety tech solutions.

Qualifications

• Bachelor's degree or equivalent years of experience and/or certification in Computer Science, Electrical Engineering, or a related field.
• 2+ years of relevant working experience.
• Proficiency in Python programming; willingness to read and understand C.
• Comfortable working on the Linux command‑line and performing basic system administration tasks.
• Experience writing and running automated tests, ideally in a CI environment.
• Familiarity with git and standard development workflows.
• Familiarity with Docker and cloud platforms (e.g., AWS) is a plus.
• Strong debugging and troubleshooting skills.
• Collaborative with the ability to work with diverse teams across the globe.
• Eager to learn and grow — a "leave things better than you found them" mindset.

Responsibilities

• Use independent judgment and responsibility to contribute to the development and maintenance of 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 device.
• Write and maintain automated tests to improve coverage and enhance failure visibility.
• Use Python for test harnesses and scripting, with exposure to C for understanding firmware under test.
• Use Linux for development and git for source code management.
• Learn and apply knowledge of embedded microcontroller systems as it relates to firmware testing.
• Assist with test systems attached to equipment capable of measuring parameters like power usage.
• Gain familiarity with microcontroller circuit boards (e.g., Arduino‑like devices), multimeters, benchtop power supplies, and electronic schematics.
• Support web services for test coordination and result display, leveraging knowledge of REST APIs and web application development.
• Triage and investigate test failures, distinguishing firmware regressions and infrastructure issues.
• Complete any additional tasks as they arise.

Skills

Python

Linux command line

CI testing

Git

Docker

AWS

Debugging

Collaboration

Willingness to learn

Education

Bachelor's degree or equivalent in CS/EE

Tools

Python

C

Linux

Docker

Git

REST APIs

AWS

Job description

Cambridge Mobile Telematics (CMT) is seeking a Software Engineer in Test II, Embedded Firmware to bolster our IoT group. You will build and maintain test infra for firmware validation, run tests on both simulated Linux and real device firmware, and develop automated tests using Python with C exposure.

You will work with embedded microcontroller systems, power-metrics test setups, and REST‑based test coordination while collaborating with global teams to deliver robust safety tech solutions.