System Administrator Lvl 3 – Cloud & Enterprise Infrastructure

The System Administrator (SA) Level 3 provides senior level operational support, troubleshooting, and technical leadership for enterprise IT systems across cloud and on premise environments. This role manages system infrastructure, supports complex integrations, oversees Tier 1/Tier 2 escalations, and ensures the reliability, security, and performance of UNIX, Windows, and cloud based systems.

Responsibilities
• Support implementation, maintenance, and troubleshooting of enterprise IT systems
• Provide Tier 1 and Tier 2 problem identification, diagnosis, and resolution
• Manage daily configuration, operation, and monitoring of IT systems
• Assist users with accessing and using systems and applications
• Resolve issues across client/server, storage, network devices, and mobile devices
• Escalate and communicate technical status updates to agency leadership
• Provide support for dispatch systems and hardware problem resolution
• Optimize system operations, perform capacity planning, and analyze performance
• Provide detailed analysis and feedback for escalated issues
• Configure and manage UNIX and Windows operating systems
• Install OS software, troubleshoot system integrity, and configure network components
• Implement OS enhancements to improve reliability and performance
• Support system design and mission architecture as part of enterprise engineering teams
• Apply working knowledge of system interdependencies within Service Oriented Architectures (SOA)
• Analyze and resolve complex issues involving server hardware, applications, and software integration

Technical Requirements
• Experience administering AWS cloud resources, including EC2, S3, VPC, IAM, and other core AWS services
• Expertise with Windows Server 2019/2022, Active Directory, DNS, Certificate Authorities, and Windows 10/11
• Strong administration experience with Linux distributions (RHEL 8/9, Amazon Linux 2023) within AWS environments
• Proficiency with automation tools:
– SaltStack
– Ansible
– Bash and Python scripting
• Ability to build and maintain automation for provisioning, configuration, and deployments
• Experience deploying and maintaining security related enterprise services:
– McAfee/Trellix agents & ePO
– Tenable Nessus agents
– BigFix
• Familiarity with tracking and remediating security vulnerabilities across diverse environments
• Experience supporting robust, production grade cloud environments and on premise servers

Requirements
• Top Secret/SCI with Full Scope Polygraph — No Exceptions
• 15 years of System Administration experience supporting programs of similar scope and complexity
• Bachelor’s degree in a technical discipline
• Five (5) additional years of SA experience may substitute for the degree
• Must have one IAT Level II certification (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP)