Senior Network Engineer - On-Site TS Clearance

Apex Systems; Lorton (VA); On-site; USD 124,000 - 150,000; Full time

Benefits offered by this job

Benefits package

Job summary

Everforth Apex seeks a Senior Network Engineer to support a secure DoD-grade enterprise network in a high-security environment in Lorton, VA. You will design, implement, and maintain network infrastructure, ensuring high availability and robust threat prevention across multiple domains.

You will lead in firewall policy optimization, incident lifecycle handling, and cross-domain data transfer security while maintaining thorough documentation and compliance with NIST/FISMA/STIG frameworks.

Qualifications

• Bachelor's degree in engineering, IT management, or related field, or equivalent experience.
• 8+ years of engineering experience, or a Master’s with 6+ years.
• CCNP or higher network certification required.
• Experience with LAN/WAN switches and firewalls in enterprise networks.
• Defense-in-depth principles and security architecture knowledge.
• Ability to install, configure, and maintain Cisco network gear and security appliances.
• Experience with incident lifecycle management and post-action reporting.
• Familiarity with NIST/FISMA/STIG compliance and ATO processes.

Responsibilities

• Support enterprise network infrastructure, performing routine maintenance and capacity planning.
• Provide technical guidance on upgrades, recapitalization, and availability planning.
• Oversee cross-domain solutions for secure data transfer across environments.
• Maintain comprehensive configuration documentation.
• Design and implement network recapitalization plans for growth.
• Serve as SME for internal network infrastructure and components.
• Build and optimize firewall policies and rule sets to enhance threat prevention.

Skills

CCNP

LAN/WAN

Firewalls

Security incident lifecycle

Solarwinds

VMware

Linux

Windows Server/AD

NIST compliance

ATO reviews

Education

Bachelor's degree

Master's degree valued

Tools

Cisco 2900/4500/9300/9400/6800/Nexus 9000

Cisco Firepower/ASA

Palo Alto

VMware vSphere

Job description

Everforth Apex seeks a Senior Network Engineer to support a secure DoD-grade enterprise network in a high-security environment in Lorton, VA. You will design, implement, and maintain network infrastructure, ensuring high availability and robust threat prevention across multiple domains.

You will lead in firewall policy optimization, incident lifecycle handling, and cross-domain data transfer security while maintaining thorough documentation and compliance with NIST/FISMA/STIG frameworks.