Senior Cloud Infrastructure Engineer (TS/SCI)

CACI International Inc; Sterling (VA); On-site; USD 87,000 - 182,000; Full time

Job summary

CA CI International Inc. seeks a Senior Infrastructure/System Administrator in Sterling, VA. You will design and implement cutting-edge system architectures, coordinating design, security, integration and testing across cloud and on-prem environments.

Responsibilities include maintaining scalable, automated infrastructure, ensuring secure access and CI/CD readiness, and documenting processes. Required are TS/SCI clearance, 5+ years in IT admin, and strong AWS/IaC expertise.

Qualifications

• Requires active TS/SCI clearance (willing to obtain polygraph).
• Bachelor’s degree or equivalent experience in information technology or related field.
• Minimum 5 years as IT system administrator or related role.
• Strong cloud infra: AWS services (EC2/S3/RDS/Lambda/IAM/SSM).
• Experience with IaC tools: Terraform or CloudFormation.
• CI/CD support: GitLab CI or GitHub Actions.
• Linux (RHEL/Ubuntu) and Windows Server administration; scripting in Bash/PowerShell/Python.

Responsibilities

• Support design, security and maintenance across cloud and hybrid environments.
• Act as bridge between operations and development teams; manage scalable infra.
• Ensure secure access, CI/CD tooling, and resources for build/test/deploy.
• Perform systems design, development, and integration across life cycle.
• Install, configure and maintain OS, application software, and tooling.
• Conduct modeling, simulation, and analysis to optimize performance.
• Maintain security measures including backups and redundancy.
• Prepare documentation for engineering processes and procedures.

Skills

Cloud Infrastructure:AWS core services

Hybrid Networking

Infrastructure as Code

CI/CD Platform Support

OS & Scripting

Linux system administration

Python scripting

Education

Bachelor’s degree in information technology

Tools

Terraform

AWS CloudFormation

GitLab CI

GitHub Actions

Kubernetes (EKS)

Ansible

VMware

Job description

CA CI International Inc. seeks a Senior Infrastructure/System Administrator in Sterling, VA. You will design and implement cutting-edge system architectures, coordinating design, security, integration and testing across cloud and on-prem environments.

Responsibilities include maintaining scalable, automated infrastructure, ensuring secure access and CI/CD readiness, and documenting processes. Required are TS/SCI clearance, 5+ years in IT admin, and strong AWS/IaC expertise.