Staff Software Engineer, Security & AI Platform

Develop and maintain security foundations for Gusto's products and AI/LLM experiences.

• •Own and evolve security foundations for Gusto’s products and AI/LLM experiences, defining authentication, authorization, and safe data handling standards.
• •Key Responsibilities Design, build, and operate authentication and authorization systems at scale.
• •Strengthen core services, access controls, storage, and APIs.
• •Detect and mitigate account takeover and abuse.
• •Build security platforms and tooling to enable product and AI teams.
• •Tackle ambiguous AI/LLM security problems and promote security best practices.
• •Requirements 10+ years as a backend engineer building large-scale server-side services and APIs.
• •Experience building secure, highly available distributed systems.
• •Hands-on with security tooling and practices (SAST, DAST, SIEM, SCA).
• •Proficiency in Ruby, Python, Kotlin, or JavaScript/TypeScript.