Sr Principal Systems Engineer – Active Directory Forests - Active Top Secret Required

Clearance Level
Top Secret/SCI
Systems Engineering
Washington, District of Columbia
Hybrid Workplace
Key Skills For Success

Complex Systems

Microsoft Windows Server

Systems Engineering

Systems Management


REQ#: RQ170457
Public Trust: SSBI (T5)
Requisition Type: Regular
Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

Sr Principal Systems Engineer - Active Directory – Active Top Secret Required


Seize your opportunity to make a personal impact as a Sr Principal Systems Engineer – ACTIVE DIRECTORY with GDIT. A career in systems engineering means designing and implementing the systems that matter most. You will ensure that Active Directory directory/site design, group policy architecture, and certificate services are functioning properly and securely across the enterprise. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate. 

At GDIT, people are our differentiator. As a Sr Principal Systems Engineer – Active Directory, you will help ensure today is safe and tomorrow is smarter. Our work depends on a Principal Systems Engineer joining our team to bring professionalism and initiative to a fast-paced environment that offers extensive options for training, certification, and career advancement. When we succeed, you succeed and together our best becomes better. 


  • Designing and implementing complex Active Directory forests and domains across an intricate network with over 10,000 users and 20,000 Active Directory objects. 

  • Providing Active Directory Federation Services (ADFS) infrastructure management. 

  • Implementing and configuring Active Directory Domain Services (AD DS), including creating and configuring domain controllers, user and group accounts, and organizational units (OUs). 

  • Working within a bastion forest solution to provide comprehensive security and management across multiple Active Directory forests. 

  • Continually monitoring the environment to ensure best practices and Federal guidelines are being followed. 

  • Creating advanced monitoring strategies for monitoring and reporting the health of Active Directory components. 

  • Recording problem symptoms and status information in a timely fashion and communicating internally within IT and externally with the customer through problem resolution. 

  • Conducting complex troubleshooting and repair tasks on Active Directory, Windows Server 2008-2019, Domain Controllers, user authentication and other operational systems as needed. 

  • Leading efforts to ensure data/media recoverability by following a schedule of system backups and database archive operations. 

  • Conducting advanced hardware and software audits of workstations and servers to ensure compliance with established standards, policies, and configuration guidelines. 

  • Developing performance and security plans for computers that meet the needs of network users. 

  • Evaluating existing systems and plans long-term strategies. 

  • Participating in on-call rotation (as required) for emergency technical support and planned maintenance activities. 

  • Potentially serving as a team or task lead. 


  • Education: BS/BA or equivalent 

  • Required Experience: 17+ years of relevant experience 

  • Required Technical Skills: DoD 8140/8570 IAT II compliance required 

  • Security Clearance Level: Active Top Secret clearance with SCI eligibility and a T5 or T5R within the last 5 years 

  • Required Skills and Abilities: Highly motivated, self-starter with great communications skills; effective problem solver; able to thrive in a fast-paced, changing environment 

  • Location: Washington, District of Columbia; limited telework may be available 


Work Requirements
Years of Experience

15 + years of related experience

* may vary based on technical training, certification(s), or degree


CompTIA - Security+ - CompTIA

Travel Required

Less than 10%


U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $169,065 - $228,735. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
View information about benefits and our total rewards program.

About Our Work

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 30 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.