Principal Software Engineer , Full Stack Cambridge, MA

Company Overview

Cambridge Mobile Telematics (CMT) is the world’s largest telematics service provider. Its mission is to make the world’s roads and drivers safer. The company’s AI‑driven platform, Drive Well Fusion®, gathers sensor data from millions of IoT devices—including smartphones, proprietary Tags, connected vehicles, dashcams, and third‑party devices—and fuses them with contextual data to create a unified view of vehicle and driver behavior.

Auto insurers, automakers, commercial mobility companies, and the public sector use insights from CMT’s platform to power risk assessment, safety, claims, and driver improvement programs. Headquartered in Cambridge, MA, with offices in Budapest, Chennai, Seattle, Tokyo, and Zagreb, CMT measures and protects tens of millions of drivers across the world every day.

Principal Software Engineer I, Full Stack – Cambridge, MA. We are seeking an experienced Principal Software Engineer to lead complex projects, mentor teams in building scalable and reliable full‑stack solutions, and shape the technical direction of our platform.

• Lead the development of critical features and components, ensuring high quality and timely delivery.
• Provide technical guidance and mentorship to engineering teams, fostering a culture of excellence.
• Identify and resolve complex technical challenges, proactively mitigating risks.
• Lead cross‑functional technical projects.
• Evaluate and recommend new technologies and approaches to improve system performance and efficiency.
• Design and implement robust, scalable, and maintainable architectures for complex systems.
• Collaborate with product and engineering leaders to define technical roadmaps and strategies.
• Anticipate future technical needs and ensure the platform is prepared for growth.
• Contribute to the development of best practices and standards for software development.
• Ensure the reliability and performance of production systems, providing on‑call support as needed.
• Drive continuous improvement initiatives to enhance operational efficiency.
• Troubleshoot and resolve complex production issues, minimizing downtime.
• Follow company defined development and operational standards and processes.
• Mentor and guide senior and junior engineers, fostering their technical growth.
• Lead code and design reviews, ensuring adherence to best practices.
• Collaborate effectively with cross‑functional teams, including product, QA, and operations.
• Participate heavily in the hiring process, driving improvements to the hiring process.
• Complete any additional tasks as they arise.

• Bachelor’s degree or equivalent experience in a technical field.
• 7+ years of relevant professional experience.
• Deep expertise in web technologies (HTML, CSS, JavaScript, Type Script) and modern web frameworks such as React and Django.
• Extensive experience designing or developing RESTful APIs or web services.
• Strong proficiency in a backend development language (e.g., Python, Java).
• Expertise in cloud platforms (e.g., AWS) and services such as EC2, S3, Lambda, SNS, SQS, RDS (Postgres), and No
  
  SQL databases.
• Proven ability to design and implement scalable and resilient systems.
• Strong understanding of software development best practices, including testing, CI/CD, and Dev Ops.
• Understanding of Agile development methodologies (specifically Scrum).
• Excellent communication and collaboration skills.
• Customer‑obsessed, demonstrates initiative, has a learning mindset, takes ownership.
• Demonstrated ability to drive technical initiatives and influence architectural decisions.
• Strong experience with system design.

• Competitive salary based on skills and experience, plus annual performance bonus.
• Equity may be awarded in the form of Restricted Stock Units (RSUs).
• Medical, dental, vision and life insurance, matching 401(k), short‑term & long‑term disability, and parental leave.
• Unlimited paid time off, including vacation, sick days and public holidays.
• Flexible scheduling and work‑from‑home policy depending on role and responsibilities.

The base salary range for this position is $177,700 to $209,000 for Cambridge, MA.

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