Onsite Cybersecurity Engineer – DoD Defense Ops (TS/SCI)

Cybersecurity Jobs; Fort Belvoir (VA); On-site; USD 140,000 - 170,000; Full time

Job summary

Data Systems Analysts, Inc. is seeking a hands-on Cybersecurity Engineer for an onsite role at the National Ground Intelligence Center (NGIC) in Charlottesville, VA.

You will guide RMF/ATO activities, continuous monitoring, and security posture improvements across DoD systems and networks. The role requires TS/SCI clearance, IAT Level II, 4+ years of experience, and strong knowledge of Windows/Linux, ACAS, Nessus, SIEM, and DISA STIGs.

Qualifications

• Education: BS degree in Engineering, Computer Science, or related field (experience may substitute).
• Clearance: TS/SCI Clearance.
• DoD 8140 (8570): IAT Level II Certification.
• Experience: 4+ years hands-on cybersecurity engineering, preferably DoD/IC.
• Strong knowledge of cybersecurity engineering principles and DoD requirements.
• Experience assessing architectures and providing cybersecurity guidance.
• Hands-on vulnerability management including ACAS, Nessus, SIEM, remediation.
• Strong Windows/Linux knowledge, networks, auth, access controls.
• Practical RMF/ConMon/eMASS knowledge and ATO processes.
• Ability to analyze complex cybersecurity problems and communicate risks.

Responsibilities

• Act as hands-on cybersecurity technical authority across DoD systems and networks.
• Advise on security requirements, system design, and risk mitigation.
• Assess architectures and identify vulnerabilities and mitigation strategies.
• Conduct vulnerability assessments using ACAS, Nessus, SIEM, and related tools.
• Apply DISA STIGs, SCAP benchmarks, and system hardening requirements.
• Support incident response, ConMon, vulnerability management, and posture assessment.
• Implement and validate controls across OS, apps, networks, and infrastructure.
• Identify opportunities to automate security assessments and processes.
• Evaluate emerging technologies for secure integration and risk impact.
• Provide guidance for RMF, ATO, SSPs, eMASS, and continuous authorization.

Skills

Cybersecurity engineering

RMF/ATO guidance

Vulnerability remediation

Threat analysis

Windows/Linux

Education

BS degree in Engineering/CS

Tools

ACAS

Tenable/Nessus

SIEM

DISA STIGs

SCAP

eMASS

POA&Ms

NIST SP 800-53

Job description

Data Systems Analysts, Inc. is seeking a hands-on Cybersecurity Engineer for an onsite role at the National Ground Intelligence Center (NGIC) in Charlottesville, VA.

You will guide RMF/ATO activities, continuous monitoring, and security posture improvements across DoD systems and networks. The role requires TS/SCI clearance, IAT Level II, 4+ years of experience, and strong knowledge of Windows/Linux, ACAS, Nessus, SIEM, and DISA STIGs.