Principal Security Architect, Cloud & Infrastructure

Cambridge Mobile Telematics•Cambridge, MA

17h•Hybrid

About The Position

We're hiring a Principal Security Architect I, Cloud & Infrastructure to own the security architecture of CMT's products, from our mobile SDKs and APIs to the services that power our platform. This is a highly autonomous individual contributor role where you'll set the technical direction for product security and influence engineering teams to deliver secure solutions. You'll stay hands-on with architecture while shaping security strategy across the organization through technical leadership, collaboration, and sound engineering judgment rather than people management. You'll also define how we securely build AI-powered products and adopt AI development tools, establishing the guardrails that enable innovation while reducing security risk. CMT is looking for a Principal Security Architect I, Cloud & Infrastructure 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.

Requirements

Bachelor’s degree or equivalent years of experience and/or certification in a related field
7+ years of experience in security, with deep, hands-on expertise in application and product security architecture
Proven ability to provide technical leadership and drive security initiatives through influence
Strong software engineering foundation with experience reviewing code and system architecture
Deep knowledge of threat modeling, secure SDLC, OWASP, authentication, cryptography, API security, and mobile security
Experience securing products that process sensitive personal data and support regulatory requirements
Working knowledge of AI/ML and LLM security, including secure AI adoption
Excellent written and verbal communication skills

Nice To Haves

Experience with mobile SDK security, reverse engineering, and anti-tampering
Familiarity with data-intensive architectures and ML-driven products
Experience developing AI governance or secure AI adoption programs
Experience in telematics, IoT, connected vehicles, fintech, or other high-trust industries
Relevant certifications such as CSSLP, OSCP, or GWEB

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 teams
Embed security into the SDLC through threat modeling, secure design reviews, and actionable engineering requirements
Lead threat modeling and translate findings into prioritized engineering work
Define application security strategy for testing, secure coding, secrets management, and software supply chain security
Own security architecture for protecting sensitive driver and location data
Define security architecture and guardrails for AI/ML features and AI development tools
Own the AppSec and Product Security roadmap, including technology strategy and prioritization
Serve as the senior security authority for architecture reviews, risk decisions, and technical guidance
Support customer and partner security reviews and mentor engineers on secure design
Complete any additional tasks as they arise