Sr Principal Engineer, Systems: TS/SCI/ Clearance with Polygraph Required

Clearance Level
Top Secret SCI + Polygraph
Systems Engineering
Reston, Virginia

REQ#: RQ87205

Travel Required: Less than 10%
Public Trust: None
Requisition Type: Pipeline

Designs and defines system architecture for new or existing computer systems.

Engineer responsible for developing engineering, and deploying technical solutions within a dedicated network. This individual will work within a small, mission focused team of network and systems engineers to implement technical solutions to challenging collaboration and data protection problems. This role performs the following core functions:

  • Develop / Test / Scale / Deploy technology solutions
  • Build solutions with a focus on information security principles
  • Work extensively with Microsoft Virtualization platforms
  • Monitor networks

1. Performs complex systems development and design work that may include logic design, I/O design, firmware development, model formulation, manufacturing and development cost projections, computer architecture analysis and design, and analog or digital systems engineering.

2. Demonstrated knowledge of computer and network security concepts, controls and implementations.

3. Experience operating and maintaining Windows Server and Microsoft virtualization technologies.

4. Experience in managing engineering products (design, build, and deploy).

5. Knowledge of hands on experience with scripting languages such as Bash, PowerShell, and Python.

6. Hands on experience implementing security best practices within platforms and networks such as securing virtual machines, hypervisors, virtual desktops, and viral networks.

7. Knowledge of Microsoft Azure.

8. Practical experience with Linux Administration, architecture, networking and optimization.

9. Ability to assess emerging technologies, determine their impact on corporate systems and incorporate them into technical plans.

10. Proficiency with basic networking and VPN technologies.

11. Performs systems modeling, simulation, and analysis.

12. Plans upgrades of operating systems and designs systems enhancements.

13. Develops documentation on new or existing systems.

14. Develops and conducts tests to ensure systems meet documented user requirements.

15. Identifies, analyzes, and resolves system problems.

16. Provides system/equipment/specialized training and technical guidance.

17. Determines system specifications, input/output processes, and working parameters for hardware/software compatibility.

18. Provides guidance and work leadership to less-experienced systems engineers and may have supervisory responsibility.

19. May serve as a technical team or task lead.

20. Serves as liaison with clients, participating in meetings to ensure client needs are met.

21. Maintains current knowledge of relevant technology as assigned.

22. Participates in special projects as required.


1. Bachelors Degree in Computer Science, Engineering or a related technical discipline.

2. Masters Degree preferred.


10-15 years of related systems engineering experience, engineering, Information Technology, and Information Systems.

Experience designing, building, deploying and maintaining sensitive networks

Experience with programming languages such as Java, C/C++, etc.

Experience with One Way Transfer Solutions and data flow management

Knowledge with SIEM and security analytical technologies (e.g., Splunk, pcap, Netflow, etc.)

Enterprise database platforms such as MSSQL and Oracle DB

Hands on experience with and advanced knowledge of networking, routing, switching, sub netting, firewalls, VLANs, ports and protocols

Experience with Linux OS, Cisco IOS

Experience with one or more of the following: DNS, database or application security, Active Directory, identity management/PKI

Experience with hyper-converged infrastructure and storage spaces direct

Hands-on experience with cloud technologies, their provisioning and security 






This position requires being fully vaccinated against COVID-19 by December 8, 2021 or the start date, if after December 8.

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

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.