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Information System Security Officer (ISSO)
Information System Security Officer (ISSO)-December 2024
Reston
Dec 13, 2025
ABOUT LEIDOS
Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, homeland security
501 - 1,000 employees
Consulting
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About Information System Security Officer (ISSO)

  Description

  We have an IMMEDIATE NEED for an Information Systems Security Officer - ISSO responsible for researching, generating, and validating security controls that support the customers’ Risk Management Framework (RMF) and ICD 503 Security Accreditation as part of an Agile team. Responsibilities include defining, creating, and maintaining Systems Security Plans (SSP) to support Accreditation and Authorization (A&A) reviews and coordinating with customer security organizations as part of DevSecOps delivery pipeline to achieve Authority to Operate (ATO). Additionally, ISSOs review systems to identify potential security weaknesses, recommend improvements to amend vulnerabilities, assist with implementing changes and documenting upgrades. Knowledge of the complex environment involving shared IC networks and multiple security enclaves is a sought-after skill.

  Primary Responsibilities:

  Serve as an advisor to the information system owner (Deliver Owners) and the ISSM on all matters (technical and otherwise) involving the security of the information system.

  Identify and define system security requirements.

  Coordinate with team’s ISSEs and/or Tech Leads to implement technical solutions during development.

  Prepare and maintain information systems Accreditation and Authorization (A&A) packages (BoE - ConOps/Customer Test Plan, SSPs SCTM)

  Propose mitigation strategies for vulnerabilities identified in the system.

  Assist ISSEs and/or Security Engineers with implementation of the Continuous Monitoring program.

  Participate in the change management process.

  Basic Qualifications:

  Active Top-Secret Clearance with Poly

  Three or more years of information assurance and cyber security engineering experience

  Experience with the Risk Management Framework (RMF) and ICD 503 Security Accreditation processes.

  Experience coordinating with Information System Security Managers (ISSM) in testing, documenting, and achieving accreditation of systems throughout the development process, and achieving operational acceptance.

  Candidates must have a BS in Computer Science, Engineering, Information Technology, System Administration, Cyber Security, with 4 or more years of prior relevant experience. We will consider 4 additional years of related experience in lieu of a degree.

  Comptia Security + and/or CISSP Certification

  Preferred Qualifications:

  Experienced with various security tools and processes such as Nessus Security Center, WebInspect, Appdetective, Xacta

  Experience with Cloud Computing Technologies/Amazon Web Services (AWS)

  STIG compliance and POA&M and vulnerability management

  Knowledge of the complex environment involving shared IC networks and multiple security enclaves

  Pay Range:

  Pay Range $81,250.00 - $146,875.00

  The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

  REQNUMBER: R-00125725

  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.

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