Cambridge Mobile Telematics
Principal Software Engineer, Full Stack
Cambridge, MA · Principal
Stay score
odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
$18,960 more — $186,160 — moves this role to Level IV and 4 lottery entries. That figure is inside the range the employer already advertised.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $186,160 would place this position at wage Level IV. That figure is within the posted range, and I'd like to target it. This role classifies under "Software Developers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Software Developers (15-1252) · Boston-Cambridge-Newton, MA-NH. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
Employer immigration record
from this employer's Department of Labor filings
Files H-1B transfers
Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.
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About the role
- 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.
- 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
- Lead cross functional technical projects
- Design and implement robust, scalable, and maintainable architectures for complex systems
- Collaborate with product and engineering leaders to define technical roadmaps and strategies
- Ensure the reliability and performance of production systems, providing on-call support as needed
- Drive continuous improvement initiatives to enhance operational efficiency
- Lead code and design reviews, ensuring adherence to best practices
- Collaborate effectively with cross-functional teams, including product, QA, and operations
- 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.
- Move fast, own outcomes, do work that matters
Requirements
- 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)
- 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.
- Strong understanding of software development best practices, including testing, CI/CD, and DevOps
- Strong experience with system design
- Extensive experience designing or developing Restful APIs or web services
- Proven ability to design and implement scalable and resilient systems.
- 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.
Compensation
- Unlimited PTO, flexible scheduling, competitive salary, annual performance bonus, RSUs, and full benefits including medical, dental, vision, and 401k match
- The base salary range for this position is: $167,200 to $209,000. This range is specifically for Cambridge, MA
- To date, CMT's technology has helped prevent over 126,000 crashes worldwide.
- Base Salary Range
- The base salary range for this position is: $167,200 to $209,000.
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
Company info
- 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.
- 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.
- We are seeking an experienced Principal Software Engineer to lead complex projects, and mentor teams in building scalable and reliable full-stack solutions.
- Be part of the team inventing the future of mobility and road safety
Equal opportunity
- Commitment to Diversity and Inclusion:
This listing is sourced directly from Cambridge Mobile Telematics's careers page and normalized into a canonical job model.