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Information Systems Security Officer ISSO (Government)

Columbia, Maryland

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AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.

Our National Security team supports our Federal Government by providing, operating and assuring critical voice, video and collaboration services for the full spectrum of national security operations.

AT&T has an opening for Information Systems Security Officer to provide technical security assessments and implement security protocols in support of customized network solution for federal government.

Description of Job Duties/Responsibilities:   

The Information System Security Officer II provides support for a program, organization, system, or enclave’s information assurance program. Provides support for proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies. Maintains operational security posture for an information system or program to ensure information systems security policies, standards, and procedures are established and followed. Assists with the management of security aspects of the information system and performs day-to-day security operations of the system. Evaluate security solutions to ensure they meet security requirements for processing classified information. Performs vulnerability/risk assessment analysis to support certification and accreditation. Provides configuration management (CM) for information system security software, hardware, and firmware. Manages changes to system and assesses the security impact of those changes. Prepares and reviews documentation to include System Security Plans (SSPs), Risk Assessment Reports, Assessment & Authorization (A&A) packages, and System Controls Traceability Matrices (SCTMs). Supports security authorization activities in compliance with the NIST Risk Management Framework (RMF) and any DoD and IC tailored requirements. 

Key tasks include:

  • Plan and coordinate the IT security programs and policies.
  • Manage and control changes to the system and assessing the security impact of those changes.
  • Obtain A&A for ISs under their purview.
  • Provide support for a program, organization, system, or enclave’s IA program.
  • Serve as the Approval Authority to validate or approve user authorization for accounts associated with systems under their control.
  • Understand the authorization boundary of systems.
  • Collaboration with System and Network administrators to understand and document data flow and architecture diagrams.
  • Knowledge of security controls, the assessment and applicability to systems.
  • Maintain operational baseline of systems under their purview.
  • Provide ongoing Continuous Monitoring to assigned systems.
  • Provide and validate the operational security posture of systems and ensure they are maintained.
  • Ability to initiate the reauthorization process of a system that needs reaccreditation.
  • Ability to decommission a system when it is no longer required.
  • Manage risks while assigned system is in operation.
  • Ability to acknowledge and respond to IAVAs and create liens as necessary.
  • Ability to understand the POA&M process as well as track and closeout any outstanding liens.
  • Perform, coordinate and document security relevant changes.
  • Perform vulnerability assessments to ensure updates and system baseline are enforced.
  • Recognize a possible security violation and take appropriate action to report the incident.
  • Manage protective or corrective measure when an IA incident or vulnerability is discovered.
  • Provide security and awareness oversight and/or training as required.
  • Review of audit reduction tools to monitor and review systems for compliance with IA policy.
  • Excellent written and verbal communication skills.
  • Excellent leadership and teamwork skills.
  • Results oriented, high energy, self-motivated.
  • Candidate may be required to respond to after-hours requests as required in a 24 x 7 environment.

Required Clearance:  TS/SCI with polygraph. (#ts/sci) (#polygraph)        

PRequired Qualifications:  Ten (10) years’ experience as an ISSO on programs and contracts of similar scope, type, and complexity is required. Experience is to include at least two (2) of the following areas: knowledge of current security tools, hardware/software security implementation; communication protocols; and encryption techniques/tools. Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required.

  • DoD 8570 compliance with Information Assurance Management (IAM) Level I or higher is required.
  • Four (4) years of additional experience as an ISSO may be substituted for a bachelor’s degree.

Ready to join our team? Apply today!





Job ID 2226002 Date posted 05/14/2022
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