Principal Enterprise Security Architect

PlanIT Group; Reston (VA); Remote; USD 180,000 - 280,000; Full time

Job summary

PlanIT Group seeks a Principal Enterprise Security Architect to bridge security operations with CISO leadership and enterprise infrastructure. You will guide architecture across hybrid data centers and multi-cloud environments, driving risk-based decisions and program governance.

This role requires extensive experience shaping security strategy and implementing SI-enabled automation. You will lead threat modeling, roadmap development, and policy enforcement, partnering with engineering and

Qualifications

• 10+ years in cybersecurity and infrastructure.
• 5+ years in a dedicated architecture role influencing architectural decisions.
• Experience translating deep technical risks and vulnerabilities into clear business-risk metrics and leading cross-team sessions.

Responsibilities

• Act as the primary security architecture advisor to US Government Client CISO ENG, translating deep technical risks and structural vulnerabilities into clear business-risk metrics.
• Lead collaborative design, threat modeling, and remediation sessions across the CISO office, Network Engineering teams, Endpoint Management teams, and external vendor/partner organizations.
• Formulate and author Enterprise Security Architecture roadmap, ensuring investments align with CISO goals and business needs in edge/network defense, cloud security, transport security, endpoint protection, and certificate lifecycle management.
• Establish and enforce governance and security policies in the infrastructure.
• Manage and/or advise on planning and operation of all CISO Engineering Security Edge workstreams.
• Conduct rigorous, proactive architectural reviews of the global hybrid footprint to identify structural weaknesses through continuous monitoring.

Skills

SASE/SSE Convergence

Edge & Perimeter Protection

ZTNA & Zero Trust

Network Security Infra

NIST CSF / 800-53

Multi-Cloud Security (AWS/GCP/Azure)

PKI & CAOps

Security Governance & Policies

AI in Security

Incident Response

Tools

DNS Security

WAAP/NGFW

EDR/XDR

SIEM

NDR

Web Proxy

Job description

Reston, VA Contract On-Site Flexibility/Remote: 100%

Principal Enterprise Security Architect

We are seeking a visionary Principal Enterprise Security Architect to serve as the strategic and technical bridge between our security operations and CISO leadership, and enterprise infrastructure. Operating within the Corporate Information Security Office (CISO), you will collaborate directly with internal and external stakeholders to align corporate initiatives with robust cyber defense strategies. The primary focus of this role is to ensure the preservation and continuous enhancement of our security posture throughout our continuing infrastructure evolution process and into the ultimate architectural end-state. You will identify structural security gaps across our hybrid environment, comprising multiple physical data centers and multi-cloud environments, engineering resilient solutions to mitigate them, while using SI and LLM .

Experience Years: 10+ years' relevant experience

• Act as the primary security architecture advisor to US Government Client CISO ENG, translating deep technical risks and structural vulnerabilities into clear business-risk metrics.
• Lead collaborative design, threat modeling, and remediation sessions across the CISO office, Network Engineering teams, Endpoint Management teams, and external vendor/partner organizations.
• Formulate and author Enterprise Security Architecture roadmap, ensuring the security solution/technology investments align with CISO goals and business needs, in the areas of edge/network defense, cloud security, transport security, endpoint protection, and certificate lifecycle management. Using skillset along with vendor products to continue moving the enterprise security towards SI automation.
• Establish and enforce governance and security policies in the infrastructure.
• Manage and/or advise on planning and operation of all CISO Engineering Security Edge workstreams.
• Conduct rigorous, proactive architectural reviews of the global hybrid footprint to identify structural weaknesses through continuous monitoring.

Required Skills:

• Strong experience with SASE/SSE Convergence – SDWAN, (CASB), Secure Web Gateways (SWG), and Zero Trust Network Access (ZTNA).
• 15+ years with strong experience with Edge and Perimeter Protection solutions and designs - IDS/IPS, WAF/WAAP, SDWAN remote security
• Strong experience with Network service security and infrastructure – DNS security, PKI and CAOps, Proxy
• Strong understanding of Zero Trust tenets and principles, and practical application of the principles.
• In-depth understanding of Security Framework Alignment: Map all infrastructure patterns to prevailing industry standards and best practices, specifically NIST CSF / SP 800-53 and the CIS Critical Security Controls.
• In-depth understanding of hybrid large scale enterprise: Strong history of assessing and securing complex enterprise environments spanning multiple physical data centers and comprehensive multi-cloud environments from various cloud service providers. (AWS, GCP, Azure)
• 10+ years of progressive experience in cybersecurity and infrastructure, with 5+ years in a dedicated architecture role directly influencing architectural decisions and priority.
• 15+ years with hands-on architectural experience across the entire technical scope: PKI, NDR, NGFW, WAAP, EDR/XDR, and SIEM), IDS/IPS, DNS Protection, Proxy, Webproxy, Client, Loadbalancer, IP routing, Data Center designs
• Experience with development and application of governance policy and standards in application of security tools, and Security Governance process/workstream management, while working to leverage SI to automate processes
• Experience with security Incident response activities.
• Understanding AI application development methodology

Industry Certifications Required:

• CCIE and CISSP.
• Desired Training:
• Microsoft Azure, GCP, AWS Fundamentals/Associate, Splunk, x-AI Fundamentals