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Leidos
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January 24, 2026
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Junior Information System Security Officer

Huntsville, AL
Full-time
Onsite
$70K/yr - $126K/yr
Entry Level
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. They are seeking a Junior Information System Security Officer to support their Classified Information System Cybersecurity/Information Assurance Program, ensuring compliance and security for classified information systems.
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Responsibilities

  • Supporting assessing and monitoring system compliance, auditing, security plan development and delivering information systems security education and awareness
  • Assist with investigating information system security violations and help prepare reports specifying corrective and preventative actions
  • Support the creation, review and update of cybersecurity documentation and other technical writing
  • Support the auditing of information systems to ensure compliance with security policies and procedures while reporting any discrepancies to the ISSM, ISO or FSO
  • Assisting in the Risk Management Framework (RMF) authorization process by developing and maintaining artifacts for the IS Body of Evidence (BoE)
  • Reviewing Configuration Management (CM) requests of all associated hardware, software, and security relevant functions are maintained and documented as part of CCB approval process
  • Assisting with sanitization and release of hardware in accordance with security policies or Authorizing Official (AO) guidance
  • Testing, evaluating and application of required technical security controls and periodic inspections of information systems

Qualification

Required

  • Bachelor's Degree and a minimum of two years' relevant experience; equivalent years of relevant work experience and certifications may be considered in lieu of degree
  • Must possess current CompTIA Security+ CE certification or equivalent
  • At least 1 year of applicable, related experience in computer-related discipline
  • Some understanding of security configurations across multiple operating systems in various environments, including Windows, Linux, utilizing Active Directory/Group Policy, Delinea, etc. is required
  • Candidate must be highly organized, self-motivated with excellent documentation and time management skills
  • Must possess the ability to communicate well with others and work with minimal supervision

Preferred

  • Some Experience with IT (Windows, Linux) and/or security related certifications
  • Experience working in DoD classified operating and/or laboratory environments
  • Some Experience with various information system security tools that address vulnerability analysis and mitigation. These may include SPLUNK, SolarWinds, Trellix, Tenable, SCAP
  • Familiarity with implementation of Government directives and policies derived from NIST, STIG, DoD, or other Government Regulatory compliance standards within a professional industry
  • Familiarity in the execution of the Assessment & Authorization processes, as defined within the Risk Managed Framework (RMF), eMASS
  • Ability to support technical security consultation for complex, cross-domain, heterogeneous classified networked environments in collaboration with internal/external Customers, Information Technology (IT) with Team support
  • Familiarity with the execution and management of cyber incident response; preservation, containment, and eradication

Benefits

  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.
Glassdoor
3.9
Founded in 1969
Reston, Virginia, USA
10001+ employees
https://www.leidos.com/
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.
Glassdoor
3.9
Founded in 1969
Reston, Virginia, USA
10001+ employees
https://www.leidos.com/
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