Senior Software Engineer in Test, Embedded Firmware

Cambridge Mobile Telematics; Massachusetts; On-site; USD 103,000 - 129,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

Unlimited PTO

Flexible scheduling

Job summary

Cambridge Mobile Telematics is seeking a Senior Software Engineer in Test, Embedded Firmware, to advance our testing footprint across hardware and software. You will develop and maintain firmware validation pipelines, leverage Linux servers, and collaborate with global teams to ensure robust, scalable test coverage.

The role combines software testing discipline with hands-on embedded firmware work, including Python test harnesses, C firmware development, and CI-driven release processes.

Qualifications

• Bachelor's degree or equivalent years of experience and/or certification in a related field.
• 4+ years of relevant working experience.
• Fluency in Python; familiarity with C.
• Comfort with Linux CLI and Linux system administration.
• Experience building and running tests in CI environments; bonus: tests on real embedded hardware.
• Knowledge of Docker, AWS, and Git.
• Collaborative with the ability to work with diverse teams across the globe.
• Balance speed and quality while prioritizing effectively.

Responsibilities

• Develop and maintain the test infrastructure for firmware validation.
• Ensure the health and functionality of firmware test systems on Linux servers and real devices.
• Extend test system capabilities by creating new tests to improve coverage and instrumentation for better failure visibility.
• Utilize Python for test harnesses and C for firmware development; work with embedded systems.
• Maintain web services for test coordination and result display via REST APIs.
• Complete additional tasks as they arise.

Skills

Python programming

Linux command-line

CI environments

Embedded systems

Cross-team collaboration

Education

Bachelor's degree or equivalent

Tools

Docker

AWS

Git

Job description

CMT is looking for a Senior Software Engineer in Test, Embedded Firmware to help us change the world. CMT has helped protect over 65 million drivers and prevent over 126,000 crashes worldwide. We build AI to solve some of the most difficult challenges in mobility — understanding and reducing risk, detecting crashes, and getting people life‑saving help. The problems are hard. The impact is real. No matter your role, your work will matter at CMT.

Responsibilities

• Develop and maintain the test infrastructure for firmware validation
• Ensure the health and functionality of various firmware test systems, including simulated firmware on Linux servers and real firmware on device
• Extend test system capabilities by creating new tests to improve coverage and enhancing instrumentation for better failure visibility
• Utilize a mix of technical skills including Python for test harnesses, C for firmware development, Linux for development systems, and git for source code management
• Bring expertise in embedded microcontroller systems for firmware operation
• Work with test systems attached to equipment capable of measuring parameters like power usage
• Possess familiarity with microcontroller circuit boards (e.g., Arduino‑like devices), multimeters, benchtop power supplies, and electronic schematics to enhance testing capabilities
• Maintain web services for test coordination and result display, leveraging knowledge of REST APIs and web application development
• Complete any additional tasks as they arise

Qualifications

• Bachelor's degree or equivalent years of experience and/or certification in a related field
• 4+ years of relevant working experience
• Fluency in Python programming; familiarity with C
• Totally comfortable working on the Linux command-line, installing Linux from scratch, and Linux system administration
• Experience building and running tests in CI environments. Bonus: experience with automatic tests running on real embedded hardware
• Experience managing build systems and release processes
• Knowledge of tools of the trade: Docker, AWS, git
• Collaborative with the ability to work with diverse teams across the globe
• Have a "leave things better than you found them" philosophy
• Ability to balance speed and quality and knowing where to prioritize

Nice to Haves

• Past experience with bare-metal programming on ARM Cortex M CPUs, and/or low power design
• Know your way around an oscilloscope and a multimeter, and how to read a hardware schematic
• Experience with SQL
• Experience instrumenting systems for performance measurement

Compensation and Benefits

• Fair and competitive salary based on skills and experience, and annual performance bonus
• Equity may be awarded in the form of Restricted Stock Units (RSUs)
• Medical, Dental, Vision and Life Insurance, matching 401k, short-term & long-term disability and parental leave
• Unlimited Paid Time Off including vacation, sick days & public holidays
• Flexible scheduling and work from home policy depending on role and responsibilities

Base Salary Range

• The base salary range for this position is: $102,800 to $128,500. This range is specifically for Cambridge, MA

Additional Perks

• Work on a mission with real impact: crashes prevented, injuries avoided, lives protected around the world
• Join an industry leader — 65 million drivers protected, powering 140+ programs across 25 countries
• Recognized innovator in mobility AI, earning top honors including the TIME Industry Leader in AI, a Gold Edison Award, and the Artificial Intelligence Excellence Award for AI for Social Good. CMT is also Great Place to Work Certified
• Be part of the team inventing the future of mobility and road safety
• Move fast, own outcomes, do work that matters
• High ownership, small teams, and direct access to leadership — no layers between your work and its impact
• Unlimited PTO, flexible scheduling, competitive salary, annual performance bonus, RSUs, and full benefits including medical, dental, vision, and 401k match
• Summer Fridays provide team members with half days to recharge
• Join one of our employee resource groups: Black, AAPI, LGBTQIA+, Women, Book Club, and Health & Wellness
• Comprehensive wellness, education, and employee assistance programs

Commitment to Diversity and Inclusion

At CMT, we believe the best ideas come from a mix of backgrounds and perspectives. We are an equal‑opportunity employer committed to creating a workplace and culture where everyone feels valued, respected, and empowered to bring their unique talents and perspectives. Diversity is essential to our success, and we actively seek candidates from all backgrounds to join our growing team. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status or disability state. CMT is headquartered in Cambridge, MA. To learn more, visit www.cmtelematics.com and follow us on Instagram @cmt.ai

About Cambridge Mobile Telematics

Cambridge Mobile Telematics (CMT) is the world's largest telematics and AI company for safer mobility. Its mission is to make the world's roads and drivers safer. The company's AI‑driven platform, DriveWell Fusion®, proactively identifies and reduces driving risk, leading to fewer crashes and injuries. To date, CMT's technology has helped prevent over 126,000 crashes worldwide. CMT enables partners to measure risk, detect crashes, provide life‑saving assistance, and streamline claims. Headquartered in Cambridge, MA, CMT operates globally with offices in Budapest, Hungary; Chennai, India; Seattle, Washington; Tokyo, Japan; and Zagreb, Croatia. Learn more at www.cmt.ai.