ClearanceJobs
Network Infrastructure Architect
The Network Infrastructure Architect provides enterprise-level architecture, design, and technology-strategy leadership to evolve the Homeland Security Enterprise Network (HSEN) and HQ LAN-A toward a scalable, interoperable, zero-trust framework. The role shapes a three-year technology roadmap, conducts proof-of-concepts, and ensures all solutions meet DHS enterprise architecture standards, security accreditation (FISMA/NIST 800-53), and 99.95% availability objectives. The objective of the support services for this project is to design, build, and maintain a cloud infrastructure with a focus on network security that supports the organization's technology and business needs. This involves architecting scalable, secure, and highly available cloud solutions, ensuring optimal performance and cost-efficiency in cloud environments such as AWS, Azure, and Google Cloud. The role requires close collaboration with other IT teams, stakeholders, and third-party vendors to deliver cloud-based infrastructure and services that align with organizational goals. Key Tasks and Responsibilities
Develop HSEN/LAN-A reference architectures covering WAN/MPLS/SD-WAN, campus LAN, wireless, TACACS/ISE, firewalls, and cloud on-ramps. Produce system design documents, diagrams, IP schemas, and maintain CMDB accuracy. Model traffic, capacity, and failover scenarios; conduct gap analysis. Lead evaluations of emerging technologies and vendor offerings; perform COTS/OSS trade studies. Deliver executive briefings and a rolling three-year technology roadmap aligned with DHS mission and budget cycles. Embed zero-trust, micro-segmentation, and IPv6 compliance into all designs. Support ATO renewals by providing architecture artifacts and POA&M responses. Develop test plans, oversee lab validation, and provide Tier-4 escalation during deployment. Generate transition documentation for NOSC operations teams and deliver knowledge-transfer workshops. Job Requirements
Education & Experience Master's degree in Computer Science, Electrical Engineering, or related discipline. 15+ years architecting enterprise WAN/LAN solutions with ? 5,500 sites and ? 250,000 users. Preferred Qualifications 10+ years direct support to DHS-wide networks. Hands-on experience with SD-WAN, cloud connectivity, and automation (Ansible/Python). Certifications Active CCIE (Routing & Switching / Enterprise Infrastructure / Service Provider). AWS Certified Advanced Networking, Juniper JNCIE, TOGAF, or GIAC-GSEC. Security Clearance U.S. Citizen with ability to obtain DHS Public Trust/Full-Scope BI. Other (Travel, Work Environment, DoD 8570 Requirements, Administrative Notes, etc.) Location: National Capital Region; occasional travel (? 10%) to remote DHS facilities. Schedule: Standard 40-hour week with participation in architecture review boards and after-hours change windows. Telework: Flexible (up to 50%) based on project phase.
The Network Infrastructure Architect provides enterprise-level architecture, design, and technology-strategy leadership to evolve the Homeland Security Enterprise Network (HSEN) and HQ LAN-A toward a scalable, interoperable, zero-trust framework. The role shapes a three-year technology roadmap, conducts proof-of-concepts, and ensures all solutions meet DHS enterprise architecture standards, security accreditation (FISMA/NIST 800-53), and 99.95% availability objectives. The objective of the support services for this project is to design, build, and maintain a cloud infrastructure with a focus on network security that supports the organization's technology and business needs. This involves architecting scalable, secure, and highly available cloud solutions, ensuring optimal performance and cost-efficiency in cloud environments such as AWS, Azure, and Google Cloud. The role requires close collaboration with other IT teams, stakeholders, and third-party vendors to deliver cloud-based infrastructure and services that align with organizational goals. Key Tasks and Responsibilities
Develop HSEN/LAN-A reference architectures covering WAN/MPLS/SD-WAN, campus LAN, wireless, TACACS/ISE, firewalls, and cloud on-ramps. Produce system design documents, diagrams, IP schemas, and maintain CMDB accuracy. Model traffic, capacity, and failover scenarios; conduct gap analysis. Lead evaluations of emerging technologies and vendor offerings; perform COTS/OSS trade studies. Deliver executive briefings and a rolling three-year technology roadmap aligned with DHS mission and budget cycles. Embed zero-trust, micro-segmentation, and IPv6 compliance into all designs. Support ATO renewals by providing architecture artifacts and POA&M responses. Develop test plans, oversee lab validation, and provide Tier-4 escalation during deployment. Generate transition documentation for NOSC operations teams and deliver knowledge-transfer workshops. Job Requirements
Education & Experience Master's degree in Computer Science, Electrical Engineering, or related discipline. 15+ years architecting enterprise WAN/LAN solutions with ? 5,500 sites and ? 250,000 users. Preferred Qualifications 10+ years direct support to DHS-wide networks. Hands-on experience with SD-WAN, cloud connectivity, and automation (Ansible/Python). Certifications Active CCIE (Routing & Switching / Enterprise Infrastructure / Service Provider). AWS Certified Advanced Networking, Juniper JNCIE, TOGAF, or GIAC-GSEC. Security Clearance U.S. Citizen with ability to obtain DHS Public Trust/Full-Scope BI. Other (Travel, Work Environment, DoD 8570 Requirements, Administrative Notes, etc.) Location: National Capital Region; occasional travel (? 10%) to remote DHS facilities. Schedule: Standard 40-hour week with participation in architecture review boards and after-hours change windows. Telework: Flexible (up to 50%) based on project phase.