Job Description
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

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

Job Requirements:

EDUCATION & EXPERIENCE

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).

EXPERIENCE

Not Specified

• 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 Verificatio