The posting, in Cambridge Mobile Telematics's own words
archived Sep 30, 2026We're hiring a Principal Security Engineer I, Product & Application to own the security architecture of CMT's products. In this highly autonomous individual contributor role, you'll set the technical direction for product security and partner with engineering teams to design and deliver secure solutions. You'll remain hands-on with architecture while driving security strategy through technical leadership, influence, and sound engineering judgment rather than people management. You'll also define the security standards and guardrails for AI-powered products and AI development tools, enabling innovation while reducing security risk. CMT is looking for a Principal Security Engineer I, Product & Application 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:
Own the end-to-end security architecture for CMT's products, including mobile SDKs, backend services, APIs, data pipelines, and partner integrations Define security standards, reference architectures, and engineering guardrails, and drive adoption across the organization Partner with product and engineering leaders to embed security throughout the SDLC Lead threat modeling and define application security strategy, including testing, secure coding, secrets management, and software supply chain security Own security architecture for protecting sensitive data and supporting privacy and regulatory requirements Define security architecture and guardrails for AI-powered products and AI development tools Own the Product Security roadmap, including technology strategy, prioritization, and risk-based decision making Serve as the senior security authority for architecture reviews, technical guidance, and customer security engagements Mentor engineers and champion secure design practices across the organization Complete any additional tasks as they arise
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Qualifications:
Bachelor’s degree or equivalent years of experience and/or certification in a related field 7+ years of experience in security with deep expertise in application and product security architecture Proven ability to set technical direction and drive security initiatives through influence in a highly autonomous role Strong software engineering foundation with experience reviewing code and system architecture across web services, APIs, and mobile platforms Deep knowledge of secure SDLC, threat modeling, OWASP, authentication, cryptography, API security, and mobile security Experience securing products that process sensitive personal data while supporting privacy and regulatory requirements Working knowledge of AI/ML and security, including the secure adoption of AI development tools Excellent written and verbal communication skills