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 & Responsibilities

• Architecture & Design -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.

• Technology Strategy & Road-mapping -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.

• Security & Compliance -Embed zero-trust, micro-segmentation, and IPv6 compliance into all designs. -Support ATO renewals by providing architecture artifacts and POA&M responses.

• Implementation & Transition Support -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.

• This Role Provides Task Support for: -Infrastructure Engineering, Development, Implementation, Integration -Enterprise Application Integration -Gap Analysis and Benchmarking -Data Migration and Integration -Acquisition Support -Risk Assessment -Open-Source Integration -Enterprise Data Management -Collaboration Tools -Business Process Reengineering -Test and Evaluation Services -Financial Analysis -Feasibility Studies -Requirements Analysis -System Design Alternative (SDA) Studies -Architecture Validation and Verification

• Minimum Qualifications (must have): -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

• Must have an active CCIE (Routing & Switching / Enterprise Infrastructure / Service Provider) certification.
• Preferred certifications include: 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.