Job Description
About Life360 Life360's mission is to keep people close to the ones they love. Our category-leading mobile app, Tile tracking devices, and Pet GPS tracker empower members to protect the people, pets, and things they care about most with a range of services, including location sharing, safe driver reports, and crash detection with emergency dispatch. Life360 serves approximately 95.8 million monthly active users (MAU), as of December 31, 2025, across more than 180 countries. Life360 delivers peace of mind and enhances everyday family life with seamless coordination for all the moments that matter, big and small. By continuing to innovate and deliver for our customers, we have become a household name and the must-have mobile-based membership for families (and those friends who are basically family). Life360 has more than 500 (and growing!) remote-first employees. For more information, please visit life360.com. Life360 is a Remote-First company, which means a remote work environment will be the primary experience for all employees. All positions, unless otherwise specified, can be performed remotely (within the US) regardless of any specified location above. We Are AI Native We are building an AI native company where AI is an integral part of how we build and operate. AI tool usage during interviews varies by role. You may be asked to demonstrate proficiency with AI tools, discuss how you leverage AI, or complete interview exercises without AI assistance. Your Recruiter will provide clear guidance as you move through the interview process. Undisclosed use of AI not previously discussed with or approved by your Recruiter may impact your candidacy. About The Team The AI Native Platform team is a cross-functional engineering organization built to lay the infrastructure foundations for Life360's AI-native transformation. We are not exploring what might be possible, we are building the platform that makes it operational. The team works across four interconnected areas: how Life360 safely accesses and governs the use of frontier AI models and external integrations; the agent deployment and workflow infrastructure that lets teams build, test, version, and operate autonomous agents with the same rigor applied to any production software; how we safely democratize data, information, and knowledge across the organization, making it queryable and usable by AI systems and humans reliably; and a multiplayer AI workbench that gives every employee a purpose-built environment tuned to their role, with relevant tools, knowledge, and workflows rather than a general-purpose chat interface. The work is deliberate, high-velocity, and built to last. The bar is high: real use cases, production deployments, measurable outcomes. Security is not a checkpoint on this team. It is part of how we build. We are looking for engineers who want to be in the room where the architecture is designed and in the codebase where it's being built. About The Job 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. This role requires both architectural depth and hands-on execution, often in the same week. You will define the security architecture other engineers build within; the trust model, authorization framework, data boundary topology, and threat model. Guide the coherence of these patterns across the teams building model access, agent infrastructure, the knowledge layer, and the end-user platform to interoperate securely and drift doesn't introduce systemic risk. The patterns we are securing are still being defined. Part of the work is figuring out which approaches hold up under real conditions, which ones don't, and scaling what works.You won't be doing this alone, you'll work alongside additional security engineers and the broader team building the platform, with the expectation that this function grows as the platform does. The data at stake has real weight. Life360's systems carry real-time location data and family relationship graphs for tens of millions of people. These are crown jewels in the truest sense — irreplaceable to the families who trust us with them. Securing the AI systems that interact with this data is not a compliance exercise. It is a core obligation of the product. The US-based salary range for this position is $239,500 to $351,500. We take into consideration an individual's background and experience in determining final salary — therefore, base pay offered may vary considerably depending on geographic location, job-related knowledge, skills, and experience. The compensation package includes a wide range of medical, dental, vision, financial, and ot