Infrastructure/System Administrator Lead

CACI • Sterling, VA

5d

About The Position

CACI is seeking an Infrastructure/System Administrator Lead to work in Sterling, Virginia, supporting intelligence systems. The role designs system architectures for new and existing computer systems and coordinates development activities, including design, modeling, security, integration, and testing. It leads implementation and maintenance across cloud and hybrid-cloud computing environments that support the software development lifecycle, bridging system operations and development teams. The position manages secure, highly available, scalable, and automated infrastructure spanning AWS services and on-premises data centers, while providing developers with the access, CI/CD tools, and computing resources needed to build, test, and deploy code. The role also performs systems design, development, and integration throughout the system lifecycle; oversees infrastructure and system software; optimizes performance through modeling and analysis; maintains security, backup, and redundancy measures; and documents engineering processes and procedures.

Requirements

• Active TS/SCI security clearance; must be willing and able to obtain a polygraph.
• Bachelor’s degree in information technology or a relevant field, or equivalent experience.
• At least 10 years of experience as an IT system administrator or in related work.
• Deep expertise in AWS core services, including EC2, S3, RDS, Lambda, IAM, and Systems Manager (SSM).
• Experience configuring AWS Direct Connect, Site-to-Site VPNs, and hybrid DNS architectures.
• Hands-on proficiency with Terraform or AWS CloudFormation for provisioning multi-environment stacks.
• Experience maintaining and scaling infrastructure for GitLab CI or GitHub Actions.
• Advanced administration of Linux (RHEL/Ubuntu) and Windows Server environments.
• Experience using Bash, Python, or PowerShell for automation.
• Demonstrated proficiency as a Linux system administrator.
• Strong scripting and coding skills, particularly in Python or similar languages.

Nice To Haves

• Expertise in operational support and system maintenance.
• Strong background managing native Kubernetes clusters and AWS EKS.
• Knowledge of Kubernetes container orchestration and Ansible automation.
• AWS Certified SysOps Administrator certification.
• AWS Certified DevOps Engineer certification.
• Experience with automation and virtualization technologies, such as VMware and virtual networking.

Responsibilities

• Lead the design, secure implementation, and maintenance of cloud and hybrid-cloud environments that support the software development lifecycle.
• Bridge system operations and development teams while managing infrastructure across AWS cloud services and on-premises data centers.
• Manage highly available, scalable, and automated environments, providing developers with secure access, CI/CD tools, and computing resources.
• Perform systems design, development, and integration throughout the system life cycle.
• Oversee moderately complex infrastructure, including installation, configuration, testing, and maintenance of operating systems, application software, and system management tools.
• Conduct systems modeling, simulation, and analysis to optimize performance and efficiency.
• Implement and maintain security measures, including backup and redundancy strategies.
• Prepare and maintain documentation for engineering project processes and procedures.

Benefits

• Flexible time off benefit.
• Learning resources and learning and development opportunities.
• Competitive compensation and benefits.
• Healthcare benefits.
• Wellness benefits.
• Financial and retirement benefits.
• Family support benefits.
• Continuing education benefits.
• Time off benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior