Intermediate ISSO

Job#: 3058639
Job Description:
Intermediate ISSO
Location: Washington, District of Columbia (Hybrid - Onsite 1 day a week)
Role Overview
An established organization is seeking an Intermediate Information System Security Officer (ISSO) to support a federal government customer. The primary objective of this role is to stabilize the security environment and remediate long-standing compliance issues. The successful candidate will help transition the security team toward managing enterprise-wide security control areas rather than dedicating resources to individual systems. This position involves driving automation initiatives to improve efficiency across approximately 90 systems while collaborating directly with system owners and cybersecurity teams.
Key Responsibilities

• Execute Risk Management Framework (RMF) activities to support Authorization to Operate (ATO) decisions.
• Develop, maintain, and update security documentation, including System Security Plans (SSPs), Plan of Action and Milestones (POA&Ms), and Contingency Plans.
• Conduct security control assessments, vulnerability assessments, and Security Impact Analyses for system changes.
• Support continuous monitoring, vulnerability management, and POA&M tracking and remediation.
• Implement security controls to ensure the confidentiality, integrity, and availability of information systems in compliance with federal standards.
• Support change management processes, including participating in Change Advisory Board (CAB) reviews.
• Prepare for and support security audits, testing, and compliance reviews by providing necessary documentation.
• Respond to cybersecurity data calls with timely information for leadership.
• Organize responsibilities by security control areas, such as Access Control and Configuration Management, across all systems.

Required Qualifications
Education: Bachelor's Degree and 10 or more years of relevant experience; or an Associate's Degree and 12 or more years of experience; or 16 or more years of experience with no degree.
Experience: A minimum of 7 years of experience in Information Security or as an ISSO supporting federal systems.
Technical Skills: Hands-on experience with the RMF lifecycle and ATO activities. Strong knowledge of FISMA, NIST 800-37, NIST 800-53, and federal cybersecurity series guidelines. Experience developing and maintaining SSPs, POA&Ms, Contingency Plans, and other security artifacts. Background in conducting security control assessments and Security Impact Analyses. Proficiency in continuous monitoring, vulnerability management, and POA&M remediation. Strong technical writing skills for producing compliance and assessment documentation.
Certifications: Must hold a CISSP, CISM, or CASP+ certification.
Preferred Qualifications

• Experience supporting federal agency cybersecurity programs.
• Understanding of cloud security concepts, with experience in AWS or Azure.
• Experience with Governance, Risk, and Compliance (GRC) tools such as CSAM, eMASS, or RegScale.

Work Environment
The immediate focus of the team is on remediation and stabilization, with enterprise automation initiatives to follow.
Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.
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