Senior Cybersecurity Engineer (TS/SCI) – Cloud & On‑Prem

CACI International Inc.; Springfield (VA); On-site; USD 113,000 - 238,000; Full time

Job summary

CACI International Inc. in Springfield, VA seeks a Senior Cybersecurity Engineer to architect, deploy, and sustain on-premises and cloud-based security infrastructures across Windows and Linux environments.

You will evaluate technologies, support integrations, and help advance NGA cybersecurity posture for mission goals. The role requires TS/SCI with polygraph eligibility, 6+ years of DoD-grade cybersecurity experience, and hands-on work with leading detection tools and firewalls.

Qualifications

• Requires TS/SCI with ability to obtain a Polygraph.
• Bachelor's in Cybersecurity/CS/IT or related field; or 8+ years of related DoD experience.
• 6+ years of network/cybersecurity engineering in large, diverse DoD environments.
• IAT III certification per DoD 8570.01-M; CSSP Infrastructure Support within 6 months.
• Expertise across detection, cloud security, and enterprise cybersecurity technologies.

Responsibilities

• Represent customer requirements in technical exchanges with government agencies.
• Develop and maintain architecture diagrams and capability roadmaps.
• Prepare and execute test plans; document network configuration changes for approval.
• May serve as team or task lead and coordinate with stakeholders and assessors.
• Support modernization of enterprise cybersecurity systems and processes.
• Provide selection and deployment guidance for hardware/software to meet mission needs.

Skills

TS/SCI Clearance

Polygraph

Cloud security

Windows & Linux

DoD network security

Education

Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or related field

In lieu of degree: 8+ yrs relevant experience

Tools

Vectra

Extrahop

Corelight

Carbon Black

CrowdStrike Falcon

Microsoft Defender

Palo Alto

Cisco Firepower

Proofpoint

F5

Job description

CACI International Inc. in Springfield, VA seeks a Senior Cybersecurity Engineer to architect, deploy, and sustain on-premises and cloud-based security infrastructures across Windows and Linux environments.

You will evaluate technologies, support integrations, and help advance NGA cybersecurity posture for mission goals. The role requires TS/SCI with polygraph eligibility, 6+ years of DoD-grade cybersecurity experience, and hands-on work with leading detection tools and firewalls.