Senior Network Infrastructure Engineer

CACI International Inc; Reston (VA); On-site; USD 104,000 - 218,000; Full time

Job summary

CACI International Inc is seeking a Network Infrastructure Specialist to design, deploy, and secure enterprise networks across a global environment. You will support planning, operation, and modernization of highly available networking solutions connecting users, apps, and systems worldwide.

The role emphasizes LAN/WAN, SD-WAN, cloud networking, automation, and incident response, with opportunities for senior guidance, architecture input, and cross-program mentorship.

Qualifications

• Bachelor's degree or equivalent in IT, CS, or related field.
• Active Secret Clearance required.
• Experience supporting enterprise network administration, engineering, or operations.
• Knowledge of TCP/IP, routing, switching, and enterprise connectivity.
• Experience with networking equipment installation and troubleshooting.
• Strong documentation and communication skills.

Responsibilities

• Install, configure, maintain, monitor, and troubleshoot enterprise network infrastructure.
• Design, implement, and optimize LAN, WAN, wireless, and SDN solutions.
• Configure routing, switching, VPN, QoS, and high-availability setups.
• Deploy and manage firewall technologies and security controls.
• Monitor performance, availability, capacity, and reliability; resolve issues.
• Perform upgrades, refreshes, and lifecycle activities.
• Develop network diagrams, documentation, standards, and procedures.
• Conduct performance and capacity analysis to improve reliability and scalability.
• Collaborate with cybersecurity teams on secure architectures and Zero Trust.
• Support cloud networking, hybrid infrastructure, remote access, and modernization.
• Develop automation for provisioning, configuration, monitoring, and support.
• Participate in incident response, root-cause analysis, and disaster recovery.
• Evaluate new networking technologies and drive modernization.
• Senior roles may lead architecture, standards, and mentoring across programs.

Skills

Secret Clearance

Network admin

TCP/IP

LAN/WAN

Firewall

Documentation

Analytical

Written communication

Education

Bachelor's degree in IT

High School diploma

Tools

Cisco DNA Center

SolarWinds

ThousandEyes

PRTG

Cisco

Juniper

Arista

Palo Alto Networks

Fortinet

Ansible

Python

PowerShell

REST APIs

Terraform

Job description

CACI International Inc is seeking a Network Infrastructure Specialist to design, deploy, and secure enterprise networks across a global environment. You will support planning, operation, and modernization of highly available networking solutions connecting users, apps, and systems worldwide.

The role emphasizes LAN/WAN, SD-WAN, cloud networking, automation, and incident response, with opportunities for senior guidance, architecture input, and cross-program mentorship.