Our Client Currently looking for Senior Principal Architect, Cyber Defense Engineering
Role Overview and Core Responsibilities
- Own and evolve the Cyber Defense reference architecture, defining the target-state design for how detection, response, vulnerability management, and endpoint telemetry integrate across a unified data and automation layer.
- Architect TransUnion’s Data Security Posture Management (DSPM) capability, leading technical evaluation, integration design, and rollout planning for cloud-native data discovery, classification, and exposure detection, including Wiz DSPM, across AWS, GCP, and hybrid environments.
- Define Zero Trust Network Access (ZTNA) architecture, establishing target-state design for identity-aware, least-privilege access to enterprise and cloud workloads in coordination with IAM, network security, and cloud infrastructure teams.
- Own Endpoint Strategy architecture, defining the target design for endpoint detection and response, exposure management, and telemetry integration across the enterprise fleet while rationalizing overlapping endpoint tooling.
- Architect the AI enablement layer for Cyber Defense, designing agentic and LLM-based capabilities for triage, investigation, and response, including MCP-based agent orchestration and AI SOC platforms that integrate with existing SIEM, SOAR, and case management systems.
- Lead the technical architecture for SIEM and security data platform modernization, defining the target design for log ingestion, retention, and analytics as the organization evaluates consolidation of fragmented logging and detection platforms.
- Define reference architecture for the VulnOps operating model, ensuring vulnerability discovery, prioritization, disruption, and remediation systems integrate cleanly with the broader Cyber Defense data and automation architecture.
- Evaluate emerging security technologies and vendor platforms against TransUnion’s architecture principles, producing build-versus-buy recommendations, integration designs, and proof-of-concept plans for new capabilities before they reach production.
- Establish architecture governance and design standards for Cyber Defense Engineering, authoring reference diagrams, integration patterns, and technical design documents that guide engineering teams building against the architecture.
Required Knowledge and Experiences
- 15+ years of experience in cybersecurity architecture, security engineering, or related technical roles, with demonstrated ownership of enterprise-scale security reference architectures.
- Deep technical expertise in cloud security posture and data security tooling, with hands-on experience in DSPM, CNAPP, or related platforms, including Wiz, across AWS, GCP, or Azure environments.
- Strong understanding of Zero Trust Network Access (ZTNA) architecture and identity-aware access models, including experience designing or implementing ZTNA in an enterprise environment.
- Hands-on experience with endpoint detection and response (EDR) architecture and tooling, including CrowdStrike Falcon and Microsoft Defender for Endpoint, with exposure management and fleet-wide telemetry design.
- Experience architecting or building AI-enabled or agentic security capabilities, including familiarity with LLM-based triage and investigation agents, MCP-based tool orchestration, or AI SOC platforms.
- Strong programming and scripting skills, including Python or Go, with the ability to build architecture prototypes, integration proofs-of-concept, and automation scripts independently.
- Experience with modern security data platforms and SIEM/log analytics architecture, including Splunk and cloud-native log platforms, with experience evaluating or leading platform consolidation efforts.
- Proven ability to produce clear architecture documentation, including reference diagrams, integration patterns, and technical design decks that engineering teams can build against.
- Bachelor’s degree in Computer Science, Computer Engineering, Information Security, or a related field required; advanced degree preferred.
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