Principal AI Security Engineer, AI Native Platform

Life360

. Own the security strategy for frontier model access and MCP governance.

Posted 5/9/2026full-timeRemote • 🇺🇸 United StatesLead💰 $239,500 - $351,500 per yearWebsite

Tech Stack

Tools & technologies

Cloud

About the role

Key responsibilities & impact

Own the security strategy for frontier model access and MCP governance. Define how we securely connect to frontier models and external tool integrations: the risk framework, the authorization architecture, and the escalation model before those patterns harden at scale. Set the direction that builders implement within
Architect the identity and trust model for non-human agents. Define how agents authenticate, how trust is established and revoked across orchestration chains, and how the model evolves as agent capabilities expand, covering service identities, scoped credentials, and least-privilege access patterns across the platform.
Set the adversarial defense posture for AI systems in production. Define our approach to prompt injection defense, adversarial input handling, and behavioral monitoring patterns and establish the detection philosophy, telemetry requirements, and response framework the team builds and operates within.
Shape security architecture for the common AI end-user platform. Lead design reviews and build the access controls, data boundary enforcement, and abuse detection that keep a shared AI environment safe across an employee population with varying privilege levels.
Secure the shared knowledge layer. Define access control and data governance for retrieval and reasoning, ensuring AI-powered tools don't inadvertently surface sensitive data to the wrong systems or users.
Build AI supply chain integrity into the platform. Develop model provenance practices, service vetting, and dependency controls that keep the AI stack trustworthy as it grows.
Partner with Privacy, Legal, and Data Platform to ensure the right controls are built into pipelines handling real-time location, family relationship data, and data involving minors.

Requirements

What you’ll need

15+ years in security engineering with depth in application security, cloud security, IAM, or detection. A track record of building controls that earn adoption, not just approval.
Security architecture ownership you’ve defined at the platform level in terms of trust models, data boundary topologies, and long-term viability that produces security outcomes without grinding velocity.
Hands-on fluency with LLM and agentic systems. You've built with these tools, broken them, and shipped fixes for prompt pipelines, RAG architectures, and multi-agent orchestration from the inside.
Deep grounding in IAM for non-human systems: service identities, OAuth, secrets management, RBAC/ABAC, and least-privilege architecture at scale. You’ve designed and built identity systems, not just consumed them.
Experience with production telemetry and detection at an architectural level. You’ve defined security observability strategies, not just individual detections.
Comfort with ambiguity and in-flight builds. You're energized by figuring things out, writing first-draft standards, testing approaches, and scaling what works.
Strategic judgement on when to build v. buy and ability to lead the organization to wise investments.
Strong cross-functional communication across engineering, product, legal, privacy, and senior leadership. You carry risk, tradeoffs, and technical decisions without losing precision.
You’ve contributed or ready to contribute to the security industry. We’re shaping these patterns together and you’re willing to represent Life360 in these 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.

Benefits

Comp & perks

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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

security engineeringapplication securitycloud securityidentity and access management (IAM)detectionLLM systemsagentic systemssecrets managementRBACABAC

Soft Skills

strategic judgementcross-functional communicationcomfort with ambiguityleadershipcollaborationproblem-solvingrisk managementtechnical decision-makingadaptabilitycreativity