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Systems Administrator

Company:
Sphinx Solutions Inc
Location:
Herndon, VA
Posted:
March 24, 2026
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Description:

TS/SCI clearance with FSPoly mandatory

Required Education, Experience, & Skills:

We are actively seeking candidates with a minimum of 16 years' experience, and a range of skill levels from basic to advanced. Bachelor's or Master's Degree are preferred in one or more of the disciplines described below where specific skills may include the following:

Key Responsibilities:

Systems Administration

• Provide Tier I & II support for enterprise systems and escalate advanced issues as needed.

• Troubleshoot server, operating system, application, and connectivity issues.

• Support daily operations, monitoring, maintenance, and upgrades for on-prem, virtual, and cloud systems.

• Document incidents, problems, and service requests using ServiceNow.

• Support asset management, inventory, and user onboarding activities.

• Maintain system documentation, SOPs, and operational guides.

• Deliver hardware within the WMA; limited travel required.

• Provide guidance and knowledge transfer to junior team members.

Quality Assurance & Testing

• Test and validate system builds, patches, and configuration changes across Dev/Test/Prod environments.

• Conduct functional, integration, regression, and post-deployment tests.

• Develop test documentation including Test Plans, Test Cases, Defect Logs, and Test Reports.

• Identify, log, and track defects through closure.

• Create test scenarios that include both expected outcomes and failure conditions.

• Perform smoke testing and pre/post-deployment validation for production releases.

• Identify risks or gaps early in development.

• Recommend areas for automated testing improvements.

Cloud & DevOps Support

• Validate deployments in AWS, Azure, and hybrid cloud environments.

• Verify IAM roles, access controls, and Zero Trust security configurations (ACLs, security groups, routing rules, firewall settings).

• Validate DNS paths, connectivity, and system availability after updates or builds.

• Confirm server build integrity through post-deployment checks (connectivity, logs, performance).

• Ensure systems remain available after certificate updates and patching.

Preferred Education, Experience, & Skills:

• Strong proficiency with:

• Windows Server 2016-2021

• Active Directory

• AWS and/or Azure

• Virtualized infrastructure

• ServiceNow or similar ITSM tools

Ability to work effectively within Agile teams including Developers, Technical Managers, Business Analysts, and Product Owners.

• Strong analytical ability, communication skills, and problem-solving capabilities.

• Ability to work independently and collaboratively.

• Experience mentoring or providing technical knowledge transfer.

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