Information Systems Security Officer (ISSO)

Job Description

Job Description

Location: Fort Meade, MD
Clearance Required: TS/SCI with Full Scope Polygraph Required for Consideration
Employment Type: Full-Time

SNS One, Inc., a Service-Disabled Veteran-Owned Small Business (SDVOSB), is seeking an Information Systems Security Officer (ISSO) to support mission-critical cybersecurity and information assurance efforts within a highly secure government environment. This role supports the implementation and enforcement of information systems security policies, standards, and methodologies across classified systems and networks.

The ideal candidate will have experience supporting RMF activities, maintaining system security posture, assisting with accreditation documentation, and supporting day-to-day information assurance operations in compliance with DoD and NIST standards.

• Support senior ISSOs in implementing and enforcing information systems security policies, standards, and methodologies
• Assist with maintaining the operational security posture of systems and environments processing classified information
• Support day-to-day security operations for information systems and enclaves
• Assist with vulnerability and risk assessment activities related to certification and accreditation efforts
• Help evaluate security solutions to ensure compliance with classified processing requirements
• Support Configuration Management (CM) activities for security software, hardware, and firmware
• Maintain records for workstations, servers, routers, firewalls, switches, and related network devices including system upgrades and changes
• Assist with security impact analysis for system changes and modifications
• Prepare and maintain security documentation including:
  • System Security Plans (SSPs)
  • Risk Assessment Reports
  • Certification & Accreditation (C&A) Packages
  • System Requirements Traceability Matrices (SRTMs)
• Support security authorization activities in accordance with the NIST Risk Management Framework (RMF)
• Ensure compliance with established information assurance and cybersecurity requirements

• Active TS/SCI with Full Scope Polygraph required for consideration
• Two (2) years of experience as an Information Systems Security Officer (ISSO/ISO) on programs/contracts of similar scope, type, and complexity
• Bachelor's degree in Computer Science or related discipline from an accredited college or university
  • Four (4) years of additional ISSO/ISO experience may be substituted in lieu of a degree
• DoD 8570 Compliance with IAT Level I certification or higher required
• Understanding of:
  • NIST RMF
  • Information Assurance principles
  • Configuration Management
  • Security compliance and accreditation processes
  • Classified systems security requirements

• Experience supporting government or DoD environments
• Familiarity with vulnerability management and security auditing tools
• Strong documentation and organizational skills
• Ability to work independently and within a team environment
• Excellent communication and problem-solving skills

At SNS One, Inc., we support national security missions through innovative cybersecurity, systems engineering, and IT solutions. We invest in our employees by offering competitive compensation, strong benefits, professional growth opportunities, and meaningful mission-focused work.

At SNS One, Inc., we are committed to providing an environment of mutual respect where equal employment opportunities are available to all applicants and teammates without regard to race, color, religion, sex, pregnancy (including childbirth, lactation and related medical conditions), national origin, age, physical and mental disability, marital status, sexual orientation, gender identity, gender expression, genetic information (including characteristics and testing), military and veteran status, and any other characteristic protected by applicable law. SNS One, Inc. believes that diversity and inclusion among our teammates is critical to our success as a company, and we seek to recruit, develop and retain the most talented people from a diverse candidate pool.