Principal Security Engineer

You will set the technical security direction across platform, infrastructure, and AI/ML systems. You will lead threat modelling and architecture reviews, embed secure-by-design practices in development, improve detection and incident response, and guide secure handling of multi-tenant sensitive data. You will also mentor senior practitioners and advise enterprise customers on security matters.

Responsibilities

• Own the technical security engineering strategy across platform, infrastructure, and AI/ML systems
• Lead threat modelling and architecture reviews for existing and new systems
• Drive secure-by-design practices throughout the software development lifecycle
• Design and improve detection, monitoring, and incident-response capabilities
• Guide security architecture for multi-tenant sensitive-data flows
• Support SOC 2 and ISO 27001 compliance through sound, documented technical controls
• Mentor senior engineers and security practitioners
• Advise enterprise customers and partners on security matters
• Identify emerging threats and mitigations for AI and voice/chat systems

Requirements

• 15+ years of security engineering experience with Staff- or Principal-level impact
• Expertise in application security or cloud security, threat modelling, and secure distributed cloud-native architecture
• Hands-on cloud security experience with AWS, GCP, or Azure
• Experience with Kubernetes
• Understanding of identity and access management, encryption, and secure enterprise data handling
• Experience securing sensitive or regulated data
• Experience driving security strategy and influencing engineering culture
• Ability to communicate security risks and trade-offs to engineers, leadership, and customers
• Interest in emerging AI security challenges