Security Engineer

Role Description We are hiring a Principal AI Security Engineer to secure Life360's AI infrastructure as it takes shape. You will sit within the AI Native Platform team, reporting directly to the CISO, working alongside the engineers designing and building each layer of the platform. Define the security architecture other engineers build within; the trust model, authorization framework, data boundary topology, and threat model. Guide the coherence of security patterns across teams building model access, agent infrastructure, the knowledge layer, and the end-user platform. Work alongside additional security engineers and the broader team building the platform. Secure the AI systems that interact with real-time location data and family relationship graphs for tens of millions of people. Qualifications 15+ years in security engineering with depth in application security, cloud security, IAM, or detection. Security architecture ownership defined at the platform level in terms of trust models, data boundary topologies, and long-term viability. Hands-on fluency with LLM and agentic systems. Deep grounding in IAM for non-human systems: service identities, OAuth, secrets management, RBAC/ABAC, and least-privilege architecture at scale. Experience with production telemetry and detection at an architectural level. Comfort with ambiguity and in-flight builds. Strategic judgement on when to build vs. buy. Strong cross-functional communication across engineering, product, legal, privacy, and senior leadership. Willingness to represent Life360 in security industry conversations. Familiarity with NIST AI RMF, OWASP LLM Top 10, and adjacent compliance environments for consumer data at scale. Bachelor's degree or equivalent experience in Computer Science, Information Security, or a related field. Requirements Own the security strategy for frontier model access and MCP governance. Architect the identity and trust model for non-human agents. Set the adversarial defense posture for AI systems in production. Shape security architecture for the common AI end-user platform. Secure the shared knowledge layer. Build AI supply chain integrity into the platform. Partner with Privacy, Legal, and Data Platform to ensure the right controls are built into pipelines. Benefits Competitive pay and benefits. Medical, dental, vision, life and disability insurance plans (100% paid for employees). 401(k) plan with company matching program. Mental Wellness Program & Employee Assistance Program (EAP) for mental well-being. Flexible PTO, 13 company-wide days off throughout the year. Winter and Summer Weeklong Synchronized Company Shutdowns. Learning & Development programs. Equipment, tools, and reimbursement support for a productive remote environment. Free Life360 Platinum Membership for your preferred circle. Free Tile Products.