Cybersecurity Jobs in Sterling, VA

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30d ago

Senior Cybersecurity Engineer - RMF/ISSE Lead

CACI Sterling, VA

Sterling, VA

30d ago Closed

$104k - $218k/yr Full time Manager Senior Application Security

This position is no longer accepting applications (closed Sep 12, 2026).

Job Description

The Senior Cybersecurity Engineer - RMF/ISSE Lead will support and strengthen the security posture for a division’s family of Electronic Warfare systems. This onsite role in Sterling, VA focuses on leading RMF execution, guiding systems through Authorization to Operate (ATO), and managing a small team of Security Engineers across the system lifecycle.

Role Overview

Lead the security engineering effort for Electronic Warfare systems by executing Risk Management Framework (RMF) activities across Steps 1 through 6. Serve in ISSO/ISSE capacity to guide systems from initial categorization to ATO, while ensuring Assessment & Authorization (A&A) documentation and continuous monitoring support ongoing compliance.

Key Responsibilities

Lead, mentor, and manage a team of 3-5 Security Engineers.
Oversee project timelines and ensure delivery of high-quality security solutions; conduct performance evaluations and support ongoing professional development.
Direct the design and documentation of secure system architectures spanning web applications, application stacks, Web Application Firewalls (WAFs), and Intrusion Detection/Prevention Sensors (IDS/IPS).
Manage secure architecture activities that include antimalware technologies and Advanced Persistent Threat (APT) prevention.
Define security requirements and integrate security capabilities across all SDLC phases (initiation, acquisition/development, implementation, operations/maintenance, disposition) following NIST 800-64 Rev. 2 guidance.
Execute RMF activities (Steps 1-6) and perform ISSO/ISSE functions to support progress through ATO.
Direct team efforts supporting DoD or IC acquisition programs resulting in IATT and/or ATO.
Develop, maintain, and review A&A documentation using Xacta, eMASS, or equivalent tools, including SSP, SCTM, and BoE.
Ensure hardware and software meet Government Security Certification Officer (SCO) requirements and align with NIST SP 800-53, ICD 503, and CNSSI 1253 standards.
Implement continuous monitoring (ConMon) and lead security audits using IC and DoD approved scanning tools, including Nessus/ACAS, SCAP/SCC, STIG Viewer, Nmap, and additional vulnerability assessment platforms.
Direct incident response activities and participate in an on-call rotation for security incidents.

Required Qualifications

Bachelor’s degree in computer science, Cybersecurity, Engineering, Information Technology, or related field (or equivalent experience).
10+ years with demonstrated ISSE/ISSO responsibilities, preferably within the Intelligence Community or DoD.
Experience achieving IATT and/or ATO on DoD or IC acquisition programs.
People management or team leadership experience.
Current active TS/SCI eligibility.
DoD 8570/8140 IASAE Level III (e.g., CISSP).
Familiarity with RMF processes and NIST SP 800-53 and NIST 800-64 Rev. 2.
Experience integrating security across the full SDLC: initiation, acquisition/development, implementation, operations/maintenance, and disposition.
Working knowledge of network protocols (TCP/IP, DNS, HTTP/HTTPS), VPNs, IDS/IPS, firewalls, and DMZ configurations.
Hands-on Linux/Unix experience.
Experience with web applications, application stacks, WAFs, and application-layer security controls.
A&A tracking tools experience including Xacta or eMASS, and SCAP/SCC, plus vulnerability assessment tools such as Nessus, ACAS, and additional platforms.

Technologies and Tools

Risk Management Framework (RMF), NIST 800-64 Rev. 2, NIST SP 800-53, ICD 503, CNSSI 1253
ISSO, ISSE, IATT, Authorization to Operate (ATO)
Xacta, eMASS, SSP, SCTM, BoE
Nessus/ACAS, SCAP/SCC, STIG Viewer, Nmap, Linux/Unix
TCP/IP, DNS, HTTP/HTTPS, VPNs, IDS/IPS, firewalls, DMZ configurations
Web Application Firewalls (WAFs), web applications, antimalware technologies, Advanced Persistent Threat (APT) prevention

Benefits

Flexible time off benefit
Robust learning resources
Healthcare
Wellness
Financial benefits
Retirement
Family support
Continuing education
Time off benefits

Incident Response

Direct incident response activities and participate in an on-call rotation for security incidents.

Clearance and Certifications

Current active TS/SCI eligibility
DoD 8570/8140 IASAE Level III (e.g., CISSP)

Travel Requirements

Percentage of Travel Required: Up to 10%
Type of Travel: Local

Compensation

Salary range: USD 103,800 - 218,100 per year.

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