Infrastructure/System Administrator SME

CACI International•Sterling, VA

10d•$103,800 - $218,100•Onsite

About The Position

CACI is seeking an Infrastructure/System Administrator SME in Sterling, Virginia, to design system architectures for new and existing computer systems and coordinate development activities, including design, modeling, security, integration, and testing. The role supports intelligence systems and helps achieve project milestones by developing solutions to complex engineering challenges. The position supports and maintains cloud and hybrid/cloud environments used in the software development lifecycle. It bridges system operations and development teams, managing infrastructure across AWS cloud services and on-premises data centers. The role also performs systems design, development, and integration throughout the system life cycle; implements and maintains infrastructure, operating systems, application software, and system management tools; and uses modeling, simulation, and analysis to optimize performance and efficiency. The administrator maintains security, backup, and redundancy measures and prepares documentation for engineering processes and procedures. The position requires an active TS/SCI clearance and willingness and ability to obtain a polygraph. Travel is local and may be up to 10%.

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 7 years of experience as an IT system administrator or in related experience.
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 to provision 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.
Familiarity managing native Kubernetes clusters and AWS EKS, or native Kubernetes clusters with Ansible automation.
AWS Certified SysOps Administrator certification.
Experience with automation and virtualization technologies, such as VMware and virtual networking.

Responsibilities

Support the design, security, and maintenance of cloud and hybrid/cloud computing environments used in the software development lifecycle.
Bridge system operations and development teams while managing infrastructure spanning AWS cloud services and on-premises data centers.
Manage highly available, scalable, and automated environments, providing developers secure access, CI/CD tools, and computing resources to build, test, and deploy code.
Perform systems design, development, and integration throughout the system life cycle.
Implement moderately complex infrastructure, including installing, configuring, testing, and maintaining operating systems, application software, and system management tools.
Conduct systems modeling, simulation, and analysis to optimize performance and efficiency.
Maintain security measures, including backup and redundancy strategies.
Prepare comprehensive documentation for processes and procedures related to engineering projects.