Senior Manager, Security Architecture

Role Summary:

Anaplan is building a formal security architecture practice, and this role leads it. You will turn security architecture into a deliberate, reusable asset for the company: reference architectures, identity and authorisation patterns, cryptography standards, and AI guardrail designs that become the natural, low-friction path for engineering rather than a checkpoint to work around. This is a people-leadership role with deep technical scope, reporting to the Director of Product Security. As Anaplan's AI capabilities and enterprise footprint grow, consistent and well-reasoned architecture decisions matter more with every product that builds on them. You will own that surface, set the standards engineering builds against, and lead a senior team to make secure-by-design the default.

Anaplan is not a simple SaaS application. The platform performs highly dimensional, enterprise-scale modelling with responsive recalculation and strong correctness expectations. The technical surface area includes the legacy Hyperblock engine, the newer Polaris engine, and a growing set of AI-powered products, including CoModeler for AI-assisted model building and CoPlanner for conversational, analyst-style planning support. AI is expanding both the capability and the attack surface of the platform, which raises the value of getting identity, authorisation, supply-chain integrity, and guardrails right by design. Security architecture has high leverage here because it sits close to engineering and platform decisions, and the team is small enough that a strong hire shapes the standards rather than inheriting them.

Your Impact:

• Lead the security architecture practice: define how architecture review works at Anaplan, what gets reviewed, when, by whom, and against which bar.

• Own the reusable patterns: drive security reference architectures, identity and authorisation patterns, cryptography architecture, and AI guardrail design as living standards that engineering adopts by default.

• Set security engineering principles: establish and maintain the standards that shape how the platform is built, and keep them legible and usable for engineers.

• Review the highest-risk designs: lead architecture and design reviews for major platform and AI changes, early enough to influence them.

• Partner with platform engineering: engage directly on the Hyperblock and Polaris surface and the AI product line so architecture reflects how the platform genuinely works.

• Support compliance by design: ensure security architecture meets the demands of the enterprise and regulated environments Anaplan's customers operate in.

• Codify decisions into policy-as-code: turn architecture decisions into enforceable, version-controlled guardrails wherever that reduces toil rather than adding it.

• Build and develop the team: hire, coach, calibrate, and mentor the architecture team, and hold a consistent technical bar.

Your Qualifications:

• A track record building or leading security architecture in a SaaS or cloud-first environment, with scope across multiple teams.

• Deep architecture credibility: identity and authorisation, cryptography, secure-by-design, and threat modelling at scale.

• Enough hands-on depth to challenge weak designs on their merits; this is a security leader who stays technically credible, not purely managerial.

• People-leadership judgement: hiring, coaching, calibrating a senior team, and making hard calls on performance.

• Experience aligning architecture to enterprise and regulated environments.

• A clear, non-hyped view of how AI changes the architecture surface: identity, authorisation, supply-chain integrity, and the need for guardrails.

Nice to have

• Working familiarity with AI security standards and references such as the NIST AI RMF, ISO 42001, MITRE ATLAS, or the OWASP LLM Top 10.

• Hands-on experience with policy-as-code and turning standards into enforced controls.

• Contributions to security standards, frameworks, or industry practice.