Network Engineer III

Blackstone Talent Group, an award-winning technology consulting and talent agency, is seeking a Network Engineer III to join our client's team.

Overview

Position Overview

We are seeking a Network Engineer III to support the implementation, maintenance, troubleshooting, and optimization of enterprise network infrastructure within a mission-critical environment. This role is responsible for ensuring reliable connectivity across complex LAN/WAN environments while supporting network upgrades, deployments, and operational activities.

The ideal candidate will have hands-on experience with multi-vendor network environments, strong troubleshooting skills, and the ability to independently perform network installations and support activities at remote locations.

Key Responsibilities

• Configure, maintain, and troubleshoot routers, switches, firewalls, and related network infrastructure.
• Monitor network performance, availability, and reliability, proactively identifying and resolving connectivity issues.
• Support and implement routing, switching, and network security technologies across enterprise environments.
• Troubleshoot network incidents involving LAN, WAN, and transport systems, performing root cause analysis and documenting findings.
• Implement and support technologies including VLANs, OSPF, BGP, GRE tunnels, UDP multicast, and TCP/IP network architectures.
• Collaborate with engineering and operations teams to support network upgrades, changes, and infrastructure modernization efforts.
• Travel to remote locations to lead network installations, perform troubleshooting, and provide technical status updates.
• Support critical operational activities, including occasional evening and weekend work as required.
• Maintain technical documentation, network diagrams, and operational procedures.

Required Qualifications

• Active Secret Security Clearance.
• U.S. Citizenship required.
• Ability to obtain and maintain a valid U.S. Passport.
• Minimum 3 years of network engineering experience in enterprise or government environments.
• IAT Level II certification (Security+, GSEC, SSCP, CISSP, CISA, or equivalent).
• Current CCNA or JNCIA certification.
• Strong understanding of:
  • OSI Model
  • TCP/IP Networking
  • OSPF and BGP Routing Protocols
  • LAN/WAN Architectures
  • Network Design and Testing Methodologies
• Experience with network traffic analysis, diagnostics, and troubleshooting.
• Experience administering and supporting:
  • Cisco and Juniper routing and switching platforms
  • Juniper, Palo Alto, and Fortinet firewalls
  • VLANs, GRE Tunnels, UDP Multicast
  • TACLANEs and optical transport technologies
• Strong written and verbal communication skills.
• Proficiency with Microsoft Office Suite, including Visio and PowerPoint.

Preferred Qualifications

• Active Top Secret Clearance.
• CCNP or JNCIP certification.
• Experience with:
  • VMware NSX, vSAN, Foundation, and Aria
  • Network automation using Ansible
  • DoD cybersecurity requirements, including STIG compliance and accreditation activities
• Experience supporting large-scale defense, aerospace, or mission-critical systems environments.

This position offers the opportunity to support a highly visible, mission-focused program operating within a complex enterprise networking environment supporting national defense objectives.

EOE of Minorities/Females/Veterans/Disabilitie