Job Information
SOS International LLC Information Systems Security Officer (ISSO) Lead in Ashburn, Virginia
Ashburn, VA, USA
Full-time
Clearance Requirement: Top Secret
Company Description
Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.
Job Description
This position is contingent upon contract award
SOSi is seeking a highly qualified Information Systems Security Officer (ISSO) Lead to support a DHS enterprise cybersecurity program providing 24×7 Security Operations Center (SOC) services. These roles deliver leadership, operational oversight, and technical expertise across cyber defense, incident response, intelligence, engineering, and modernization activities.
Job Description
Leads RMF and continuous monitoring activities; ensures systems maintain authorization posture and comply with DHS and CBP security requirements.
Responsibilities
Manage RMF lifecycle activities including ATO support, POA&M tracking, and continuous monitoring.
Coordinate with system owners, engineers, and cybersecurity teams to maintain compliant security posture.
Develop and maintain security documentation, SSPs, and assessment artifacts.
Support change control and configuration reviews impacting system authorization.
Provide compliance reporting and audit support to CBP stakeholders.
Qualifications
Experience: 8+ years supporting RMF, ATO, and continuous monitoring in federal environments.
Tools: eMASS or equivalent, vulnerability scanners, POA&M tracking tools, and security compliance platforms.
Certifications: CISSP, CISM, CCSP, or CEH certification required.
Clearance: Secret (TS-eligible).
Additional Information
Work Environment
Work hybrid/on-site as required.
Normal office conditions with potential to perform duties in CONUS locations.
Core hours of operation are Monday through Friday, 0600 – 1700.
May be requested to work evenings and weekends to meet program and contract needs.
Working at SOSi
All interested individuals will receive consideration and will not be discriminated against for any reason.
SOSi is an equal employment opportunity employer and affirmative action employer. All interested individuals will receive consideration and will not be discriminated against on the basis of race, color, religion, sex, national origin, disability, age, sexual orientation, gender identity, genetic information, or protected veteran status. SOSi takes affirmative action in support of its policy to advance diversity and inclusion of individuals who are minorities, women, protected veterans, and individuals with disabilities.