Principal Software Engineer I, Full Stack
Cambridge Mobile Telematics
| Company | Cambridge Mobile Telematics |
| Category | Uncategorised |
| Location | Cambridge |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Not stated |
| Salary | Not stated by the employer |
| Posted | 1 Apr 2026 |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (greenhouse) |
Description
We are seeking an experienced Principal Software Engineer to lead complex projects, and mentor teams in building scalable and reliable full-stack solutions. The person in this role will play a pivotal role in shaping the technical direction of our platform and ensuring its continued success.
CMT is looking for a Principal Software Engineer I, Full Stack 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:
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, and improve the hiring process
Complete any additional tasks as they arise
Qualifications:
Bachelor’s degree or equivalent years of experience and/or certification in a technical field
7+ years of relevant professional experience
Deep expertise in web technologies (HTML, CSS, JavaScript, TypeScript) and modern web frameworks (e.g., React, 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), including services like EC2, S3, Lambda, SNS, SQS, RDS (Postgres), and NoSQL databases.
Proven ability to design and implement scalable and resilient systems.
Strong understanding of software development best practices, including testing, CI/CD, and DevOps
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
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 resp
986,449 openings. Erioun finds yours.Scored against your own profile, every hour.Try the radar →