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CACI International Information Systems Security Officer (ISSO) in Reston, Virginia

Job Description

What You’ll Get to Do:

As a CACI/WGI (The Wexford Group International) you will play a key role as an experienced systems security professional to lead a government program’s accreditation efforts and serve as an Information Systems Security Officer (ISSO) for a Microsoft GCC-High Cloud-based O365 tenant environment. As a key member of our team, you will create all necessary certification and accreditation (C&A) documentation and lead efforts throughout the Risk Management Framework (RMF) process. You will also support information system life cycle activities ranging from rapidly establishing systems to support multi-program portals, provide regular maintenance, support and upgrades of systems during program execution, and to program close-out and de-certification activities. You will work with a team of Government, Active Duty Military, and other contractors to Designate the information technology type of each assigned system. Develop system security plans (SSPs) for each system by categorizing, selecting, and implementing appropriate security controls including upload of artifacts substantiating the implementation or POA&Ms development as required. Support system assessment and authorization by developing and iterating POA&Ms in response to Security Assessment Reports. Monitor the cybersecurity posture of each assigned system, responding to incidents as required. As the ISSO, your role is to support the needs of our technical customers while being compliant with the Department of Defense (DoD) system security requirements in accordance with NIST 800-171 standards as part of our enterprise transition to the O365 GCC-High Cloud and in pursuit of Cybersecurity Maturity Model Certification (CMMC).

More About the Role:

In this role you will support the creation of a System Security Plan (SSP) and relevant technical documentation capturing the technical system configurations, standards and procedures. You will work during normal business hours and be in daily coordination with O365 Security and Compliance Engineers, developers and work under the guidance of the Technical Project Lead. You will primarily work remotely with an occasional requirement to travel to the northern Virginia area for collaboration sessions and business meetings.

You’ll Bring These Qualifications:

  • Bachelor’s degree in engineering, computer science or related technical discipline

  • 5+ years of experience specializing in Information Security

  • 7+ years of Information Technology experience

  • Experience as an ISSO implementing NIST 800-171 controls.

  • Have CISSP certification or equivalent per DoD Directive 8570.1.

  • Experience in developing external customer relationships and communications (e.g., DSS, DIA, NGIC, NRO, DARPA, IARPA, AF, Navy)

  • Experience in FSO, PERSEC, COMSEC and/or program security roles

  • Currently hold either of the minimum Information Assurance Manager (IAM) Level II credentials: Certified Authentication Professional (CAP) or CompTIA Advanced Security Practitioner (CASP+CE)

  • 2-5 years of directly related Information Assurance (IA) or cybersecurity experience working with DoD systems.

  • Working knowledge of these references: CNSSI No. 1253 “Committee on National Security Systems, Security Categorization and Control Selection for National Security Systems,” DoDI 8500.01 “Cybersecurity,” DoDI 8510.01 “Risk Management Framework for DoD IT,” FIPS-199 Pub “Standards for Security Categorization of Federal Information and Information Systems,” NIST SP 800-53 Rev 4 “Security and Privacy Controls for Federal Information Systems and Organizations.”

  • Currently hold either of the minimum Information Assurance Manager (IAM) Level II credentials: Certified Authentication Professional (CAP) or CompTIA Advanced Security Practitioner (CASP+CE)

  • Active Top Secret security clearance and ability to obtain SCI and polygraph.

This Qualification Would be Nice to Have:

  • Hold a current Information Assurance Manager (IAM) Level III credential

  • Certified Information Security Manager (CISM)

  • Certified Information Systems Security Professional (CISSP, or Associate)

  • GIAC Security Leadership (GSLC), or Certified Chief Information Security Officer (CCISO)

  • Microsoft 365 Security Administration

  • Microsoft 365 Mobility and Security

  • Identity and Access Administrator Associate

What We Can Offer You:

  • CACI-WGI (The Wexford Group International) is a wholly-owned subsidiary of CACI with a reputation for uncompromising standards of quality in its people and its performance. Joining the CACI-WGI team is a mark of excellence for those employees who complete our rigorous Recruiting, Assessment, and Selection (RAS) process.

  • CACI-WGI’s mission places its personnel against the government’s most critical emerging challenges. Work with us and you’ll be working with a team making a difference across the globe.

  • CACI-WGI offers competitive benefits as well as numerous learning and development opportunities.

Job Location


CACI employs a diverse range of talent to create an environment that fuels innovation and fosters continuous improvement and success. At CACI, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. CACI is proud to provide dynamic careers for employees worldwide. CACI is an Equal Opportunity Employer - Females/Minorities/Protected Veterans/Individuals with Disabilities.