Enterprise Senior Systems Administrator

GDIT seeks a highly motivated and experienced Enterprise Senior Systems Engineer to support the Defense Threat Reduction Agency (DTRA) Defense Stockpile Management System (DSMS) mission at Fort Belvoir, VA.

Essential Experience, Knowledge, Duties and Responsibilities:

• Analyze and evaluate existing hardware/software technology systems and design technological improvements.

• Monitor and verify the availability, validity, and reliability of the enterprise infrastructure and services.

• Diagnose and resolve infrastructure hardware, software, network, domain, and client service issues.

• Oversee enterprise infrastructure Continuity of Operations (COOP) and Disaster Recovery (DR) plans, operations, and procedures.

• Develop, test, implement, and execute upgrade strategies for Windows based operating system software, databases, and services.

• Plan and implement security hardening activities in accordance with requirements.

• Advanced experience of administrating Windows servers in virtualized environments.

• Comprehensible knowledge of networking technologies and protocols. Knowledge and experience of deploying Public Key Infrastructure (PKI) methodologies and processes.

• Fundamental knowledge of RSA SecurID multifactor authentication and processes.

• Research, plan, propose, and brief Analysis of Alternatives (AoA) on enterprise infrastructure hardware, operating systems, and applications with recommendation(s) of appropriate Course of Action (COA).

• Provide technical guidance on emerging IT industry developments and technology capabilities.

• Routinely review and manage mitigation efforts for Assured Compliance Assessment Solution (ACAS) reports of vulnerabilities on enterprise hardware, software, and applications.

• Maintain, implement, and report Plan of Action and Milestones (POA&M) on security posture concerns.

• Author applicable Documented Risk Acceptance (DRA) documentation and brief the program Cybersecurity Team and/or Information System Security Manager (ISSM).

• Advise Cybersecurity Team on all technical matters pertaining to enterprise infrastructure and services.

• Audit, remediate, and report Security Technical Implementation Guide (STIG) compliancy status.

• Create engineering documentation, diagrams, and configuration artifacts for the enterprise infrastructure.

• Work with stakeholders to ensure Enterprise services meet and support IT business requirements for on-prem, hybrid, and cloud solutions.

• Track, plan, and implement lifecycle management for enterprise hardware and software.  

• Manage, track, document, and communicate assigned project status.

• Proficiency to lead team projects and liaison with all aspects of the program. Ability to work both independently and within a team.

• Skillful time management and organizational skills to meet deadlines and balance numerous priorities.

• Excellent written and oral communication skills.

Required Knowledge, Skills, and Abilities:

• Experience with DISA STIGs and their relation to Windows, Linux, and VMWare Operating Systems security.

• Intermediate experience with PowerShell scripting and deployment.

• Prior experience building, deploying, and administrating Windows Server 2016-2022.

• Experience with providing Active Directory Domain Services and Public Key Infrastructure services.

• Ability to install, configure, and upgrade hosted applications Operating System services.

• Experience working with Trellix Security Suite.  

Minimum Education and Requirements:

• Education: Bachelor’s Degree in a related field or 8+ years of experience.

• Required: DoD 8570/8140 IAT Level II (e.g., Security+ CE, CCNA-Security, or SSCP).

• Required: Minimum of a DoD Final Secret security clearance at start.

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