Senior Security Architect

The role

This role performs hands-on architecture work to design secure patterns for the Hyperblock, Polaris, and AI product surfaces. You will design security patterns, manage identity and authorization, and implement cryptography and key management.

What you will do

• Produce reference architectures and maintain security patterns for platform and AI components
• Contribute to identity and authorisation design including tenant isolation and service-to-service trust
• Apply cryptography and key management including encryption and BYOK
• Design AI guardrails including input and output controls and prompt-injection defences
• Run threat models on high-risk systems and turn findings into design changes
• Support external assessments by preparing architecture evidence
• Improve the supply chain and attack surface
• Write and review designs and prototypes
• Mentor engineers and contribute to standards

Required qualifications

• Solid experience in secure software architecture
• Depth in at least two of: cryptography and key management, identity and authorisation, tenant isolation, and threat modelling
• A working understanding of AI and ML security
• Ability to design and review real systems
• A record of influencing engineers without formal authority
• Experience with enterprise-scale SaaS or cloud-first systems
• Clear written and verbal communication

Nice to have

• Experience with Vault, KMS/HSM, or BYOK/HYOK designs
• Experience designing for regulated environments, such as FedRAMP
• Contributions to NIST, ISO, or OWASP, or talks and published research
• An offensive grounding that you use to pressure-test designs

About the company

Anaplan is a team of innovators focused on optimizing business decision-making through an AI-infused scenario planning and analysis platform. Their customers include global companies such as Coca-Cola, LinkedIn, Adobe, LVMH and Bayer.