The Senior Network Engineer provides Tier‑3/Tier‑4 engineering expertise for design, implementation, troubleshooting, and optimization of the HSEN WAN and HQ LAN‑A infrastructure, ensuring ≥ 99.5 % availability for critical services. The role supports configuration management, change control, security patching, and incident response across routers, switches, firewalls, VPN/DMVPN/SD‑WAN, wireless, and cloud network components.
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
Core Engineering:
* Engineer and implement upgrades to WAN/LAN per approved designs; validate in lab prior to production cut‑over.
* Perform advanced routing (OSPF/BGP/DMVPN/SD‑WAN), QoS, multicast, and segmentation.
* Integrate new security controls (NGFW, IDS/IPS, ZTNA) and support ATO evidence collection.
Operations & Support:
* Provide Tier‑3 escalation and Tier‑4 manufacturer liaison for Priority‑1/2 incidents.
* Execute vulnerability remediation and patch management per DHS severity windows.
* Coordinate change‑management reviews and post‑implementation validation.
Process & Documentation:
* Develop and maintain device configurations, SOPs, logical/physical diagrams in CMDB/ServiceNow.
* Generate weekly service‑request metrics, monthly availability, and root‑cause reports.
*Contribute to automation scripts (Ansible/Python) and network‑modernization prototypes.
This Role Provides Task Support for:
* Operational Support
* Software Maintenance and Upgrades
* Telecommunications Maintenance (Data, Voice, Images, including Wireless) *
* Infrastructure Management Services (IMS)
* Configuration Management
* Network/Hardware Support
* IT Support (Tier 3 network support)
* Resource Management
* Backup and Recovery Management
* Installation, Configuration, and Tuning
* Electronic Software Licensing Services including license: deployment, management, tracking, upgrading, etc.
* Infrastructure System Management – Firewalls, etc.
* IT Operation and Maintenance Planning
* Data Quality Management
* Transformation Services
* Continual Service Improvement
* Balanced Scorecard for Operations
* IT Infrastructure Optimization