CMT is seeking a collaborative, customer-committed, and creative Principal Software Engineer I, Cloud 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. In this role, you will design and implement scalable architectures to reliably collect and manage telematics data from diverse 3rd-party sources including delivery platforms, automotive OEMs, and telematics service providers transforming these complex datasets into unified, actionable insights that power global safety and risk-assessment programs.

Responsibilities: 

• Collaborate closely with development teams, product managers, and stakeholders to conceptualize and innovate software solutions 
• Architect and oversee client-side and server-side systems, setting the technical direction for complex projects 
• Act as a mentor and technical leader, providing guidance and knowledge transfer to junior and mid-level engineers. 
• Spearhead the creation of visually appealing front-end applications while pushing the boundaries of user experience design 
• Manage and optimize high-performance databases and applications, ensuring seamless data flow and system stability 
• Develop robust APIs that seamlessly integrate with various components of the software ecosystem
• Implement rigorous testing procedures to guarantee software responsiveness, scalability, and efficiency 
• Diagnose, troubleshoot, and execute software enhancements, elevating system performance.
• Establish and maintain advanced security protocols and data protection measures to safeguard sensitive information 
• Lead the development of innovative features and applications with a relentless focus on mobile-responsive design 
• Complete any additional tasks as they arise 

Qualifications: 

• Bachelor’s degree or equivalent years of experience and/or certification in Computer Science or a related field 
• 7+ years of relevant working experience in web application development, showcasing an exceptional command of programming concepts 
• Mastery of contemporary HTML/CSS, jQuery, and an in-depth understanding of their application in modern web development
• Proficiency in Python and JavaScript/TypeScript, with a demonstrated ability to architect and deliver solutions across the software stack 
• Expertise in developing, optimizing, and maintaining web applications, APIs, and databases to deliver top-notch performance and functionality 
• Comprehensive knowledge of relational database systems and their seamless integration into complex software projects 
• A deep understanding of the intricate workings of web applications, coupled with the ability to optimize performance

Nice to Haves: 

• Strong knowledge in web security and session management
• Experience with the AWS ecosystem
• Ability to work independently when needed 
• Ability to learn quickly 
• Familiarity with modern JS frameworks such as React or Angular 
• Hands-on experience with network diagnostics, network analytics tools

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: $168,000 to $210,000. 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.