Key Responsibilities
Security Architecture Design & Development
Design and develop technical security architectures for new and existing services, platforms, and infrastructure
Produce detailed security architecture documentation including High-Level Designs (HLDs), Low-Level Designs (LLDs), security patterns, data flow diagrams, and integration specifications.
Define security architecture principles, standards, and patterns that guide technology decisions across the organisation.
Ensure security architectures address the full security stack: identity, authentication, authorisation, encryption, network segmentation, boundary protection, endpoint security, logging, monitoring, and incident detection.
Security Toolset Tech Refresh & Evergreening
Lead the technical planning, design, and architecture for the refresh and evergreening of the security toolset estate
Develop tech refresh roadmaps for security toolsets — prioritised by risk exposure, vendor support status, capability gaps, and strategic alignment.
Evaluate, assess, and recommend security technologies through structured evaluation processes including proof of concept (PoC), proof of value (PoV), and technical benchmarking.
Cross-Domain Architecture & Pattern Alignment
Ensure security architectures align with and contribute to cross-domain architectural patterns — including infrastructure, network, platform, application, and data architecture.
Define reusable security architecture patterns and reference architectures that can be applied consistently across projects and services.
Collaborate with enterprise architects, infrastructure architects, network architects, and application architects to ensure security is embedded in all architectural decisions — not bolted on.
Cloud Security Architecture
Design security architectures for public cloud (AWS, Azure, GCP), private cloud, hybrid cloud, and multi-cloud environments.
Define cloud security reference architectures
Identity & Access Management Architecture
Design and maintain IAM architectures
Ensure IAM architectures support operational requirements including break-glass procedures, emergency access, and audit trail integrity.
Boundary & Network Security Architecture
Design boundary and network security architectures
Ensure boundary security designs support both traditional perimeter models and Zero Trust Network Architecture (ZTNA) principles.
Secure Platform Architecture
Design security controls and hardening standards for platform architectures
Define secure build standards, hardening baselines (CIS Benchmarks, DISA STIGs), and compliance validation approaches.
Risk Management & Threat-Informed Design
Apply threat modelling methodologies (e.g., STRIDE, MITRE ATT&CK, kill chain analysis) to inform security architecture decisions.
Identify, assess, and document security risks associated with architectural designs, technology choices, and toolset transitions.
Maintain a security architecture risk register and ensure risks are communicated to stakeholders with clear mitigation recommendations.
Required Skills & Experience
Essential
Significant experience in a Technical Security Architect or Senior Security Engineer role, designing and delivering security architectures in complex enterprise environments.
TOGAF and/or SABSA certification
CISSP certification (or equivalent)
Deep technical expertise across multiple security domains: identity & access management, boundary/perimeter security, cloud security, endpoint security, network security, and secure platform architectures.
Proven experience leading security toolset refresh, migration, and evergreening programmes.
Strong experience designing security architectures for cloud environments (AWS, Azure, and/or GCP).
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