Senior Cyber Security Engineer: Vulnerability & Automation

Cybersecurity Jobs; Chantilly (VA); On-site; USD 104,000 - 218,000; Full time

Job summary

CACI is seeking a Senior Cyber Security Engineer to support mission-critical enterprise cybersecurity applications and systems from Chantilly, VA on an onsite basis. You will help operate and improve vulnerability scanning capabilities, provide Tier 2/3 engineering support, and contribute to A&A activities in support of program requirements.

This role involves engineering support for cybersecurity tooling, troubleshooting scanning and integration issues, and identifying opportunities to automate

Qualifications

• Active TS/SCI clearance with polygraph.
• Bachelor’s degree or 4+ years of relevant experience.
• 5+ years of experience with cybersecurity tools in an enterprise environment.
• Hands-on experience with Tenable products and enterprise vulnerability scanning operations.
• Strong knowledge of Windows and Linux administration, OS hardening, TCP/IP networking, and core network security concepts.
• Expertise in enterprise scanning, continuous monitoring, host/network defense, and intrusion detection.
• Ability to translate cybersecurity needs into technical requirements and apply defense-in-depth principles.
• Excellent communication, organization, troubleshooting, and customer-support skills.
• Active IAT Level II certification, or ability to obtain within 30 days of hire.

Responsibilities

• Provide engineering support and system administration for cybersecurity applications including installation, configuration, maintenance, patching, and backup/restore.
• Develop, customize, and manage scan policies, audit files, scan jobs, dashboards, and reports (Nessus and ServiceNow integrations).
• Deliver Tier 2 and Tier 3 support for cybersecurity technologies while ensuring compliance with customer policies, procedures and TASKORDs.
• Troubleshoot vulnerability scanning issues and provide responsive support via phone, email, and messaging platforms.
• Identify opportunities for process automation and integrate scripted solutions to streamline tasks and support metrics.
• Support Assessment & Authorization (A&A) work by updating documentation, preparing security artifacts, and resolving conflicts.
• Review policies and workflows to improve efficiency and cybersecurity posture.

Skills

Cybersecurity tooling experience

Automation scripting

Vulnerability scanning operations

Incident response

Communication skills

Education

Bachelor’s degree

4+ years of relevant experience

Tools

Tenable Nessus

ServiceNow

AWS

Windows

Linux

NIST SP 800-37 RMF

NIST SP 800-137 Continuous Monitoring

Job description

CACI is seeking a Senior Cyber Security Engineer to support mission-critical enterprise cybersecurity applications and systems from Chantilly, VA on an onsite basis. You will help operate and improve vulnerability scanning capabilities, provide Tier 2/3 engineering support, and contribute to A&A activities in support of program requirements.

This role involves engineering support for cybersecurity tooling, troubleshooting scanning and integration issues, and identifying opportunities to automate