Senior Network Engineer

Job Description

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

Job Requirements: