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Job Details


Principal Information System Security Officer (ISSO)



Full Time

On Site


Reston, Virginia, United States


Job Description:

Leidos has an opening for a Principal Information System Security Officer (ISSO). This role is 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 the principal 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

  • Five 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 12-15 years of prior relevant experience or Masters with 10-14 years of prior relevant experience.

  • 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 $118,300.00 - $182,000.00 - $245,700.00

The Leidos pay range for this job level is a general guideline only and 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.