Sr Principal Software Engineer, AI Security Platform
About The Position
Northern Trust is seeking a highly experienced Senior Principal Software Engineer to support technical development of its AI-powered Code Security Scanner platform. The platform uses frontier AI models and advanced security automation to identify, validate, and report software vulnerabilities across enterprise codebases. The role is responsible for ongoing development, architectural evolution, and long-term enhancement of the platform, combining user-facing application design, automation, AI service integration, and cloud-native security. The engineer will serve as a lead technical developer for the platform, implement modernization, enhancements, and scalability initiatives, and mentor junior team members. The position also improves user experience, reporting dashboards, workflow management, and administrative capabilities; implements secure authentication and authorization patterns; maintains and extends orchestration and scanning services; expands and manages integrations with LLM-based security analysis; and enhances automated vulnerability analysis, reporting, and verification workflows.
Requirements
- 15+ years of professional software engineering experience.
- 5+ years in a lead, principal, or senior engineering role.
- Experience supporting enterprise-scale applications in regulated environments.
- Expert-level React development.
- Experience with modern SPA architecture.
- Experience with REST APIs and authentication integrations.
- Expert-level Python development.
- Experience in API design and integration.
- Experience with automation and orchestration frameworks.
- Experience with test automation and quality engineering.
- Experience integrating Large Language Models (LLMs).
- Experience with agent-based workflows and automation frameworks.
- Experience with application security and vulnerability management.
Responsibilities
- Serve as a lead technical developer for the AI Code Scanner platform.
- Implement platform modernization, enhancements, and scalability initiatives.
- Mentor junior team members.
- Improve user experience, reporting dashboards, workflow management, and administrative capabilities.
- Implement secure authentication and authorization patterns.
- Maintain and extend orchestration and scanning services.
- Expand and manage integrations with LLM-based security analysis capabilities.
- Enhance automated vulnerability analysis, reporting, and verification workflows.
Benefits
- Retirement benefits, including 401(k) and pension.
- Health and welfare benefits, including medical, dental, vision, spending accounts, and disability coverage.
- Paid time off.
- Parental and caregiver leave.
- Life and accident insurance.
- Other voluntary and well-being benefits.
- Discretionary bonus program that may include an equity component.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
