Mission-Driven Senior ISSO: Lead Security & RMF

Applied Information Sciences, Inc.; Washington (District of Columbia); On-site; USD 120,000 - 181,000; Full time

Job summary

Applied Information Sciences, Inc. (AIS) is seeking a Lead Security Engineer to provide leadership for system security compliance, authorization, and continuous monitoring across programs. The position is contingent upon contract award and funding.

The role requires 8+ years ISSO/engineer experience in a cleared environment, DoD 8140 certification, and cloud security credentials; you will oversee RMF/NIST 800-53, ATO processes, and mentor junior staff while coordinating with ISSMs and auditors.

Qualifications

• Minimum 8+ years of ISSO or ISS Engineer experience in a cleared environment.
• Minimum 8+ years of cybersecurity or related technical experience.
• Bachelor's or advanced degree in Cybersecurity, Computer Science, IT, or related discipline; 4 years' experience can substitute for degree.
• DoD 8140 certification or equivalent (CISSP, GISP, or CASP).
• At least one cloud security certification from AWS, ISC2, AWS Solutions Architect, Microsoft AZ-500, or Google Professional Cloud Security Engineer.

Responsibilities

• Lead documentation, testing, and comprehensive review of system security controls.
• Ensure full system boundary definition and accurate inventory of all technologies.
• Oversee and validate implementation of all assigned NIST 800-53 controls.
• Drive and manage system authorization (ATO) efforts to completion.
• Ensure proper system lifecycle management, including decommissioning strategies.
• Establish and enforce continuous monitoring processes.
• Advise stakeholders on cybersecurity risks, compliance posture, and remediation strategies.
• Mentor Junior and Mid-level ISSOs.
• Interface with ISSMs, AO representatives, and auditors.

Skills

Security strategy

Cryptography

Security programs

Cloud security

Project leadership

Risk management

NIST RMF

ATO processes

Mentoring

Vendor management

Education

Bachelor's degree or higher in Cybersecurity/CS/IT

Tools

Nessus

Splunk

Guardium

WebInspect

NMAP

Job description

Applied Information Sciences, Inc. (AIS) is seeking a Lead Security Engineer to provide leadership for system security compliance, authorization, and continuous monitoring across programs. The position is contingent upon contract award and funding.

The role requires 8+ years ISSO/engineer experience in a cleared environment, DoD 8140 certification, and cloud security credentials; you will oversee RMF/NIST 800-53, ATO processes, and mentor junior staff while coordinating with ISSMs and auditors.