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Sr Systems Administrator - Active Directory-US Citizen

NTT DATA, Inc.
Washington, DC Full Time
POSTED ON 3/10/2025
AVAILABLE BEFORE 6/10/2025

Req ID : 317014

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a Sr Systems Administrator - Active Directory-US Citizen to join our team in Washington DC, District of Columbia (US-DC), United States (US).

Position's General Duties and Tasks :

The Senior IT Systems Administrator - Active Directory provides Tier 2 through 4 operational support and administration for enterprise services within the Defense Information Systems Agency (DISA). This role focuses on configuring and maintaining Microsoft Active Directory environments supporting approximately 10,000 users and 10,000 computer objects in a no-fail, globally accessible mission environment. Key responsibilities include :

  • ConfiguringActive Directory objects, including users, groups, and organizational units, to ensure accurate access control and system functionality.
  • Maintainingthe health of Active Directory domains and forests through regular updates, backups, and replication monitoring.
  • Resolvingescalated technical issues related to Active Directory, such as login failures, group policy errors, and directory synchronization problems.
  • MonitoringActive Directory performance and security logs to detect and mitigate anomalies or unauthorized access attempts.
  • Supportingsystem administrators and end-users by providing guidance on Active Directory-related configurations and troubleshooting.
  • Documentingadministrative procedures, configuration changes, and incident resolutions to maintain operational records and support compliance.
  • Implementingsecurity patches and updates to Active Directory systems to meet DoD standards and protect against vulnerabilities.

Basic Qualifications :

  • Bachelor's degree in Computer Science, Information Systems, Engineering, Mathematics, or a related scientific or technical discipline. Relevant experience may be substituted for education on a case-by-case basis.
  • Minimum 10 years of relevant experience supporting projects of similar size, scope, and complexity (e.g., enterprise-level IT administration for 10,000 users).
  • Certifications : Compliance with DoD 8140 for Information Assurance Technician (IAT) Level 2 (e.g., CompTIA Security , CCNA Security, or equivalent) is required at the time of hiring.
  • Must be a US citizen with a Top Secret / SCI Clearance who is capable of receiving a higher level clearance.
  • Must currently reside a communtable didtance from the client site in Washington, DC.
  • Preferred Qualifications :

  • Master's degree in Computer Science, Information Systems, Engineering, or a related discipline.
  • Proven ability to configure and maintain complex Active Directory forests and domains in a multi-site, high-availability environment.
  • Certifications : Microsoft certifications (e.g., Microsoft Certified Solutions Associate (MCSA), Microsoft Certified : Identity and Access Administrator Associate) and DoD 8140 IAT Level 3 compliance (e.g., CASP , CISSP).
  • More than 5 years of experience in IT systems administration, particularly with Active Directory in a DoD or government enterprise setting.
  • Experience with related enterprise services, such as Public Key Infrastructure (PKI) administration, Windows server management, or mobile device management platforms.
  • Strong track record of resolving complex technical issues in a 24 / 7 / 365 operational environment supporting global users.
  • Proven ability to work effectively in cross-functional teams supporting mission-critical IT operations on a global scale.
  • Fedsec

    About NTT DATA

    NTT DATA is a $30 billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long term success. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies.Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure and connectivity. We are one of the leading providers of digital and AI infrastructure in the world. NTT DATA is a part of NTT Group, which invests over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. Visit us at us.nttdata.com

    NTT DATA endeavors to make https : / / us.nttdata.com accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https : / / us.nttdata.com / en / contact-us . This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here . If you'd like more information on your EEO rights under the law, please click here . For Pay Transparency information, please click here .

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