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Principal System Administrator Security Clearance

Job in Reston, Fairfax County, Virginia, 20190, USA
Listing for: Anonymous Employer
Full Time position
Listed on 2026-07-20
Job specializations:
  • IT/Tech
    Cloud Computing: Infrastructure & Operations, Cybersecurity, AWS, Systems Engineer
Job Description & How to Apply Below
Position: Principal System Administrator with Security Clearance
We are seeking an Expert-Level Systems Administrator to provide technical leadership for a mission-critical enterprise development program. In this role, you will help design, implement, and maintain a highly secure, Cloud-Native Service architecture that enables software engineering teams to seamlessly maximize cloud capabilities. You will act as a core engineering resource, providing execution guidance and practical systems support to cross-functional implementation teams.

Because this program powers foundational authentication, authorization, and secure directory services utilized across hundreds of enterprise networks, maintaining high availability is paramount. Primary Responsibilities

• Infrastructure O&M:
Maintain, monitor, and optimize enterprise servers and commercial-off-the-shelf (COTS) applications running within an Amazon Web Services (AWS) environment.

• Security & Compliance:
Lead regular security patching, system hardening, and provide key technical support throughout the system security accreditation and compliance lifecycle.

• Technical Leadership:
Deliver innovative infrastructure approaches, translating high-level program requirements into tactical, production-ready cloud solutions.



Cross-Functional Collaboration:

Partner directly with Software Developers, V&V Engineers, and Dev Sec Ops  teams to coordinate complex software and infrastructure deployment instructions.

• Mission Availability:
Ensure 24/7/365 operational status for core services. Actively participate in an on-call rotation (approximately one full calendar week every two months). Required Experience & Technical

Skills:

• Linux Mastery:
Expert-level knowledge of Linux-based operating systems paired with advanced Bash scripting capabilities for system automation.

• AWS & Infrastructure as Code:
Strong hands-on experience navigating the AWS Console and CLI. Proven understanding of enterprise cloud architecture and Infrastructure as Code (IaC) concepts.

• Observability Stack:
Proficient with the Elastic Stack (Elasticsearch, Logstash, Kibana, and Beats) for system monitoring and log aggregation.

• Dev Ops CI/CD Pipelines:
Experience working with automated deployment and configuration management tools (e.g., Git Hub, Jenkins, Puppet, Docker, Rundeck).

• Security Systems:
Familiarity with federal security accreditation procedures and privileged access management duties.

• Agile Alignment:
Background collaborating within Agile development frameworks to deliver incremental system updates.

• Education & Longevity: BS degree and 11–15 years of relevant engineering experience (additional years of deep technical experience may be considered in lieu of a degree). Highly Desired (Bonus)

Qualifications:

• Active AWS Associate-level certification (Sys Ops Administrator, Solutions Architect, or Developer).

Hands-on experience working within secure government cloud environments (C2S) or using AWS Cloud Formation.

• Experience with Identity, Credential, and Access Management (ICAM / IdAM / IAM) architectures, directories, or enterprise LDAP / Tomcat implementations.

• Prior experience handling highly sensitive, restricted datasets.

• Containerization credentials, such as a Certified Kubernetes Application Developer (CKAD) certification.
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