ForeScout Cyber Security Engineer - TS/SCI

DAn Solutions, Inc.; Washington (District of Columbia); On-site; USD 105,000 - 150,000; Full time

Job summary

DAn Solutions, Inc. seeks an experienced ForeScout Network Security Systems Administrator to deploy, administer, and troubleshoot enterprise IT and cybersecurity infrastructure in a secure multi-domain environment.

The role focuses on ForeScout CounterACT, Windows and Linux systems, AD, firewalls, VLANs, and related security tools in a high-security setting. Candidates must hold an active TS/SCI clearance with the ability to obtain a Counterintelligence Polygraph.

Qualifications

• 3+ years of Windows or Linux systems administration experience
• Experience deploying and managing ForeScout CounterACT appliances
• Network engineering/administration experience including AD, VLANs, firewalls, and LAN/WAN
• Experience with multi-domain architectures and enterprise networks
• Active TS/SCI clearance with ability to obtain Counterintelligence Polygraph
• DoD 8570 IAT Level III and CSSP-IS qualifications or ability to obtain within timelines

Responsibilities

• Deploy, configure, administer, and maintain ForeScout CounterACT appliances
• Support ForeScout deployment across multi-domain environments (data center, WAN, LAN, virtualized)
• Perform Windows/Linux admin tasks: installation, config, troubleshooting, monitoring, upgrades
• Handle network ports, switch config, LAN/VLAN administration, firewall support
• Support Active Directory, guest LANs, and related services
• Troubleshoot issues across systems, network, and cybersecurity infra
• Integrate security data using Splunk or similar tools
• Provide Tier II IT operations and maintenance support
• Assist with security compliance, assessments, risk management, and remediation
• Maintain documentation and coordinate with customers and stakeholders
• Independently resolve technical issues within a team environment

Skills

ForeScout CounterACT

Windows administration

Linux administration

Active Directory

Network administration

TS/SCI clearance

Counterintelligence Polygraph

Firewall knowledge

Splunk

Tier II IT operations

Job description

DAn Solutions, Inc. seeks an experienced ForeScout Network Security Systems Administrator to deploy, administer, and troubleshoot enterprise IT and cybersecurity infrastructure in a secure multi-domain environment.

The role focuses on ForeScout CounterACT, Windows and Linux systems, AD, firewalls, VLANs, and related security tools in a high-security setting. Candidates must hold an active TS/SCI clearance with the ability to obtain a Counterintelligence Polygraph.