Senior Information Systems Security Specialist (Cybersecurity)

TL;DR

Senior Information Systems Security Specialist (Cybersecurity): Leading the implementation and maintenance of security controls for U.S. Government civilian agencies with an accent on NIST 800-53 compliance, vulnerability management, and secure infrastructure design. Focus on directing remediation activities, managing POA&M lifecycles, and ensuring system integrity across diverse operating environments.

Location: Must be based in Sterling, VA (Onsite)

Salary: $99,000–$206,000

Company

hirify.global provides advanced cyber, data operations, and systems integration services for intelligence, defense, and commercial markets.

What you will do

• Lead the implementation and maintenance of security controls aligned with NIST SP 800-53.
• Design and sustain secure infrastructure across Windows, macOS, and Linux/Unix environments.
• Manage container platform security, including patching, hardening, and secure image lifecycles.
• Direct remediation activities and coordinate with asset owners to meet federal compliance timelines.
• Manage the POA&M lifecycle and maintain artifacts for ATO and control assessments.
• Monitor platform security posture and escalate risks as necessary.

Requirements

• U.S. Citizenship required
• Active TS/SCI Secret clearance required
• Ability to obtain DHS Suitability
• 6+ years of directly relevant experience in cybersecurity engineering.
• Proficiency with NIST 800-53, RMF, and AWS security.
• Experience with Splunk, Trellix, and Nessus/Tenable.

Culture & Benefits

• Comprehensive medical, vision, and dental insurance coverage.
• 401k retirement plan.
• Paid Time Off (PTO) and paid holidays.
• Opportunity to work on critical national security missions.