Overview We are seeking a highly skilled and motivated Senior Windows Systems Administrator to join our project team delivering and supporting a COTS platform for our government customer in Springfield, VA. This pivotal role focuses on the end-to-end installation, management, and optimization of the Windows-based servers hosting this platform within a secure Amazon Web Services (AWS) cloud environment. The ideal candidate will ensure the platform's stability and performance through expert administration, proactive monitoring, and advanced Tier 2 and Tier 3 troubleshooting in a mission-critical setting. What will you do? • Support the installation, configuration, and management of the Windows servers specifically dedicated to hosting the delivered COTS platform. • Administer and maintain Windows servers hosted within the customer's AWS environment, ensuring availability and secure operations for the COTS application. • Collaborate closely with the Project Team ISSO to implement defined security requirements and translate security directives into technical configurations for the platform’s hosting environment. • Provide comprehensive support for the implementation, troubleshooting, and maintenance of the COTS platform and its supporting IT systems. • Manage the platform’s infrastructure and all associated processes, including configuration, security, and day-to-day operations. • Monitor system health, resolve platform-specific operational problems, and conduct performance tuning to optimize COTS application efficiency. • Serve as an escalation point for Tier 2 and Tier 3 problem identification, diagnosis, and resolution for the hosting environment. • Install and load operating systems, the specific COTS software package, and all required supporting software components. • Isolate and resolve complex hardware and software problems involving the COTS application, operating systems, and cloud infrastructure. • Troubleshoot, maintain integrity, and configure network components to enhance platform reliability and performance. • Escalate issues and communicate platform status updates effectively to program management and customers. • Develop and maintain automation scripts for routine administrative tasks to improve the operational efficiency of the platform. • Implement and manage backup operations and disaster recovery plans. • Conduct regular security assessments and apply necessary patches to ensure the platform remains compliant with federal security frameworks. Do you have what it takes? Required Qualifications • Senior-level experience performing system administration tasks on Windows servers, specifically supporting enterprise-scale COTS applications. • Active Security+ or SecurityX certification. • Proven experience scripting or automating tasks within AWS cloud environments. • Active TS/SCI clearance with CI polygraph (or eligible for polygraph). • Experience with core AWS services including EC2, S3, IAM, VPC, and CloudWatch. • Strong knowledge of Active Directory, Group Policy, DNS, and DHCP as they relate to application hosting. • Demonstrated ability to work effectively with security leads and support the A&A process and meet rigorous compliance and protection standards. • Excellent problem-solving and analytical skills specifically focused on complex software integrations. Desired Experience and Qualifications • Familiarity with configuration management tools like CloudFormation for automated platform deployment. • Experience supporting DevOps processes for software delivery teams. • Bachelor’s degree in Computer Science, Information Technology, or a related discipline. • Experience performing system administration or IT-related tasks with US Intelligence Community customers.