Principal Software Engineer, Full Stack

About the role

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.

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
• 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

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 responsibilities

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

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.