Jobs / United States / Cambridge Mobile Telematics INC
Principal Software Engineer, Full Stack
Cambridge Mobile Telematics INC · 🇺🇸 Cambridge, MA
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 12 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest May 2026) — the step every H-1B hire needs first. USCIS also records 4 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Cambridge Mobile Telematics INC paid sponsored hires in similar roles3 certified filings for “Software Engineer II, Full Stack” (Software Developers) in MA: $116k–$178k, median $155k. Most were filed at wage level I (33%) — 1 lottery entry, ≈15% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Cambridge Mobile Telematics INC
The US Department of Labor certified 12 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest May 2026) — the step every H-1B hire needs first. USCIS also records 4 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Cambridge Mobile Telematics INC →
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. 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 respon