Network Engineer

CACI International • Sterling, VA

1d • Onsite

About The Position

CACI is seeking a Network Engineer to join a highly skilled engineering team supporting the E3I program, maintaining and advancing secure communications infrastructure. This person will support mission-critical environments by ensuring network reliability, scalability, and performance across classified and unclassified domains. Work hands-on with Cisco and Red Hat Enterprise Linux systems to configure, optimize, and secure network operations. Collaborate with cross-functional teams to design, document, and troubleshoot innovative network solutions. Contribute to the continuous improvement of network capabilities and security posture in a dynamic, mission-driven setting. This position requires to be in Office 100%, located in Sterling VA

Requirements

• Active Top Secret clearance; SCI eligible; willingness to obtain a Polygraph.
• Bachelor’s degree in IS Technology, Computer Science, or related field and 3+ years of experience, or 9+ years of equivalent experience without a degree.
• DoD 8570 IAT II certification (Security+ or equivalent).
• Hands-on experience with Cisco network equipment (Catalyst, Nexus, ASA, FirePower).
• Experience with static routing, NAT, and IPSEC (Policy-Based and Route-Based).
• Familiarity with Red Hat Enterprise Linux networking configuration (interfaces, routes, and troubleshooting).
• Strong understanding of Layer 1–3 networking and troubleshooting.
• Experience performing packet captures and network analysis.
• Proficiency with documentation tools (Visio, Excel, Word).
• Strong communication, collaboration, and customer service skills.

Nice To Haves

• Experience with network monitoring platforms and performance optimization tools.
• Familiarity with automation or scripting for network configuration.
• Knowledge of virtualization or container networking concepts.
• Experience in a DoD or enterprise network environment.

Responsibilities

• Install, configure, and maintain network infrastructure components, including switches, routers, and firewalls.
• Establish and fulfill port and service requests.
• Configure and troubleshoot Layer 2 and Layer 3 networking components, including static routing and NAT.
• Configure and troubleshoot Cisco ASA 5525 and FirePower devices.
• Establish, maintain, and troubleshoot IPSEC tunnels (Policy-Based and Route-Based).
• Perform packet captures and traffic analysis for network diagnostics and performance monitoring.
• Monitor network health and proactively identify performance or reliability issues.
• Maintain and document device configurations, network diagrams, and IP databases.
• Provide technical input during meetings and make recommendations for network improvements.
• Collaborate using Jira, Confluence, and other ticketing and documentation tools.
• Support Red Hat Enterprise Linux networking, including IP addressing, routes, and interface configuration.

Benefits

• Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives.
• We offer competitive compensation, benefits and learning and development opportunities.
• Our broad and competitive mix of benefits options is designed to support and protect employees and their families.
• At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level