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# Information System Security Engineer

- **Company:** Science Applications International Corporation
- **Location:** Arlington, VA, United States (Remote available)
- **Salary:** $120,001.0 - $160,000.0
- **Contract:** Permanent contract
- **Skills:** IEEE 802.1X, Access Network, User Authentication, Microsoft Azure, CompTIA Security+, Information Security Management, Intrusion Detection and Prevention, Python (Programming Language), Network Security, Windows Servers, Network Monitoring, Network Protocols, Windows PowerShell, Red Hat Enterprise Linux, Security Information and Event Management, Scripting, Firewalls (Computer Science), Vulnerability Analysis
- **Published:** July 11, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=dc60b915e2c297e7

## About the Role

* Bachelor's degree and five (5) years experience; Four (4) years' experience can be considered in lieu of degree.

Clearance Requirements:

 * Must possess and maintain an active TS/SCI clearance; US Citizenship required., * Experience with DoD cybersecurity tools (e.g., ACAS, ESS, SIEM platforms, Evaluate-STIG, and STIG Viewer).
 * Familiarity with network protocols, firewalls, intrusion detection/prevention systems, and endpoint security.
 * Experience with Network Access and Authentication to include RADIUS (NPS, ISE, ClearPass), 802.1X Wired/Wireless Authentication, and Device Posture Validation.
 * Red Hat Enterprise Linux and Windows Server administration.
 * Scripting language such as PowerShell or Python.
 * Active Directory and Group Policy administration.
 * Certifications: CISSP / CASP+ / CISM / CCSP, Security+, Azure Security or Administrator Certifications, Network Security Certifications.

Desired Skills:

 * Experience working in a Microsoft Azure cloud environment.

## Description

* Implement and maintain cybersecurity controls in accordance with DoD policies, including NIST SP 800-53, RMF, and applicable STIGs.
 * Monitor network and system security, analyze security events, and respond to incidents in a timely manner.
 * Conduct vulnerability assessments and remediation activities using approved DoD tools and processes.
 * Collaborate with IT, engineering, and program teams to ensure security requirements are integrated into system designs and operations.
 * Assist in the preparation, review, and maintenance of security documentation, including System Security Plans (SSPs), Plan of Action & Milestones (POA&Ms), and risk assessments.
 * Support the Risk Management Framework (RMF) process for system accreditation and continuous monitoring, including activities related to obtaining and maintaining Authority to Operate (ATO).
 * Participate in security audits, inspections, and assessments, and assist with remediation of findings.
 * Stay current on emerging cyber threats, vulnerabilities, and DoD cybersecurity directives.


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