Principal AI Security Architect

About Northern Trust As a global leader in innovative wealth management, asset servicing, asset management and banking services, Northern Trust (Nasdaq: NTRS) is proud to guide the world’s most successful individuals, families, corporations and institutions. Since 1889, we have aligned our efforts with our three guiding Principles That Endure:
Service, Expertise, and Integrity. Together, they reflect the three cornerstones of business conduct which we strive to instill in our employees, whom we call partners, and to provide to our clients and the communities we serve worldwide. With more than 135 years of financial experience and over 24,000 partners, we serve the world’s most sophisticated clients using leading technology and exceptional service.

Role Overview Northern Trust is establishing an AI Security organization responsible for enabling the safe adoption of AI across the enterprise. We are seeking a Principal AI Security Architect to help define and operationalize the security architecture, governance patterns, and technology guardrails that support enterprise AI platforms, agentic systems, digital coworkers, and emerging technologies.

This is a highly hands-on architecture role. The successful candidate will actively create architecture artifacts, design patterns, diagrams, reference architectures, security requirements, and reusable guidance while partnering closely with engineering, enterprise architecture, identity, data, application security, infrastructure, and risk teams.

This is not a governance-only position and is not a management role. The architect will be expected to work directly with technical teams, evaluate complex designs, solve challenging architecture problems, and help establish the security foundations that enable AI adoption  Responsibilities Security Architecture & Design Serve as lead security architect for AI, agentic AI, cloud, SaaS, and emerging technology initiatives.

Review and challenge solution designs to identify security requirements, architectural risks, and opportunities for improvement.

Develop security architecture deliverables including:
Solution diagrams Data-flow diagrams Trust boundary diagrams Reference architectures Security patterns Design standards Control requirements

Conduct threat modeling and security design reviews for AI systems and supporting technology platforms.

Translate security policies and control objectives into practical engineering requirements.

AI Security Enablement Help define security patterns for: AI agents and digital coworkers AI platforms and orchestration frameworks RAG architectures MCP integrations AI identities and delegated authorization models Model access control and governance AI observability and monitoring

Work with delivery teams to accelerate security reviews through reusable patterns and pre-approved architectures.

Create practical implementation guidance for engineering teams building AI capabilities.

Reference Architecture & Standards Development Build and maintain a library of reusable AI security reference architectures, architectural decision records, and security patterns.

Develop architecture standards and guardrails for enterprise AI adoption.

Identify recurring design decisions and convert them into reusable reference material.

Contribute to enterprise-wide AI security strategy and architecture direction.

Enterprise Collaboration Partner closely with:
Enterprise Architecture Security Engineering Identity & Access Management Application Security Security Operations Data Protection Cloud Engineering Emerging Technology teams

Facilitate architecture workshops, design sessions, and technical working groups.

Influence security and technology decisions across multiple organizations.

Emerging Technology…