Position Summary

Deloitte is hiring an Information Systems Security Officer (ISSO) for an exceptional opportunity in Arlington, VA.

TS/SCI with polygraph clearance required.

The candidate will be a member of the Government and Public Services (GPS) Security team and will join a team of cyber security professionals in performing Systems Administration and Information System Security Officer responsibilities across numerous accredited locations. 

Work you will do

  • Primary responsibilities will include all aspects of classified systems accreditation, continuous monitoring, procedures, and security plans.
  • Balance multiple tasks, oversee, coach and mentor team personnel, support the configuration, control, maintenance and troubleshooting of all classified systems to assure compliance, identify, and mitigate risks to the Firm. 
  • Implement, test, and maintain configuration management policies, procedures and assure security compliance with audits & vulnerability assessments.
  • Serve as the primary security business advisor to client account teams, GPS Contracts, Talent, other Enabling Areas as needed, and government client.
  • Provide daily oversight of team members to ensure work is distributed appropriately, is completed on time, and meets quality standards.
  • Support development of team by delivering appropriate onboarding/ongoing training, providing regular, constructive feedback to support the development of the team, and ensuring personal development goals are being set and met for all team members.
  • Escalate issues and concerns to appropriate managers and senior leadership.
  • Responsible for developing, maintaining, and enforcing all Information Security policies, standards, and guidelines.
  • Reviews and updates SSPs as needed. Evaluates proposed changes to a system to ensure the change does not impact the system's security.
  • Assist with installation and setup of new hardware, including desktops, servers, and networking equipment.
  • Incident response: collaborates internally and externally to develop and support operational procedures to mitigate risks related to classified data spills, intrusions, and unauthorized accesses within Federal compliance guidelines relative to specific Federal agency clients to maintain system integrity and availability.
  • Strong verbal and written skills required providing management status reports and document system changes.
  • Implement baseline changes under tech lead oversight. Review audit logs. 
  • Conduct vulnerability scans and check scan reports for compliance
  • Check POA&M status.
  • Ensure all system users and people with security responsibilities receive their annual awareness training. 
  • Assist with the CM for information system security software, hardware, and firmware
  • Manages changes to systems and assesses the security impact of those changes.
  • Prepares and reviews documentation to include System Security Plans (SSPs), Risk Assessment Reports, Certification and Accreditation (C&A) packages, and System Requirements Traceability Matrices (SRTMs). 



  • Active TS/SCI with polygraph clearance
  • Five (5) years of experience with Assessment and Authorization, Information Assurance and supporting a client within the Intelligence Community.
  • Strong technical knowledge of security system functions, security policies, technical security safeguards, and operational security measures to include government security requirements with 32 CFR and ICD 503.
  • Must meet 8570 IAT II requirements to include one of the following certifications: CCNA Security, GSEC, Security+ CE, SSCP, CASP CE, CCNP Security, CISA, CISSP.
  • Information Assurance experience including evaluating, testing, certifying and accrediting of classified and sensitive but unclassified information systems as well as Commercial Off the Shelf (COTS) and Government Off The Shelf (GOTS) products
  • Familiarization and understanding and/or training with National Institute of Standards and Technology (NIST) Special Publication 800 Series.
  • Knowledge of the latest developments in current Information Systems Security strategies and be familiar with the services Information System Security policies.
  • Have technical knowledge of security system controls, policies, technical security safeguards, and operational security measures to include various government security requirements and working knowledge of NISPOM, NIST, and ICD 503
  • Team player and can work in a fast-paced environment.

Primary work site is in Arlington, VA with occasional travel in support of tactical requirements and strategic growth initiatives.

Our people and culture

Our diverse, equitable, and inclusive culture empowers our people to be who they are, contribute their unique perspectives, and make a difference individually and collectively. It enables us to leverage different ideas and perspectives, and bring more creativity and innovation to help solve our client most complex challenges. This makes Deloitte one of the most rewarding places to work. Learn more about our inclusive culture.

Professional development

From entry-level employees to senior leaders, we believe there’s always room to learn. We offer opportunities to build new skills, take on leadership opportunities and connect and grow through mentorship. From on-the-job learning experiences to formal development programs, our professionals have a variety of opportunities to continue to grow throughout their career.

As used in this posting, “Deloitte” means Deloitte LLP. Please see www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or protected veteran status, or any other legally protected basis, in accordance with applicable law.

Requisition code: 118860


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