Principal Security Engineer, Product & Platform

Responsibilities

• Define and drive Gradial’s product and platform security strategy and prioritize investments against material risks.
• Lead threat modeling for the agentic platform and design protections for agent behavior, permissions, isolation, customer data, and platform boundaries.
• Harden application and cloud infrastructure, including production access, IAM, secrets management, and the CI/CD supply chain.
• Partner with engineering to build secure-by-default patterns for agents, services, and infrastructure.
• Own security detection and incident response, including logging standards, detection coverage, and response processes.
• Represent technical security in enterprise customer reviews and architecture discussions.
• Own technical controls supporting SOC 2 in partnership with the IT and compliance lead.
• Identify future security capabilities and help hire additional security team members.

Requirements

• 10+ years of experience in security engineering, including Principal- or Staff-level ownership across complex production systems.
• Deep product security experience with threat modeling, secure architecture, authentication and authorization, and multi-tenant systems.
• Strong hands-on experience with cloud security, Kubernetes, IAM, and infrastructure as code.
• Technical expertise securing LLM and agent-based systems and reasoning about emerging risks.
• Experience leading security incident response for production services.
• Track record of writing and shipping production code, security tooling, or infrastructure.
• Ability to make pragmatic security tradeoffs in fast-moving environments without an established playbook.
• Clear communication with engineers, company leadership, and enterprise customer security teams.
• Preferred experience as an early security hire at a high-growth B2B SaaS, AI, or infrastructure company.
• Preferred experience building security detections, telemetry, and logging pipelines in cloud environments.
• Preferred experience implementing technical controls for SOC 2 or ISO 27001, or contributing to AI security research, standards, or open-source security tooling.

Benefits

• Performance-based annual bonus and meaningful equity awards.
• Medical, dental, and vision coverage, fully covered for employees and 75% covered for dependents.
• Fertility and family-planning support.
• 401k plan and unlimited PTO.
• Seattle office with a gym, sauna, bike parking, and free lunch three days per week.
• Flexible work hours and a collaborative culture focused on learning and impact.