Senior DevSecOps Engineer: TS/SCI, AWS & Kubernetes

CACI International Inc; Chantilly (VA); On-site; USD 113,000 - 238,000; Full time

Job summary

CACI International Inc is seeking a Senior DevSecOps Engineer to design, build, and secure a scalable AWS-based Kubernetes ecosystem. You will own automation, CI/CD pipelines, container security, and infrastructure lifecycle across multiple environments.

Required TS/SCI with polygraph, 3+ years (mid) or 6+ years (senior) in DevOps, strong Python/Bash skills, and hands-on Kubernetes experience. Travel up to 5% is expected.

Qualifications

• Current TS/SCI clearance with Polygraph.
• Bachelor's degree in Computer Science or related field, or equivalent experience.
• 3+ years (mid-level) or 6+ years (senior-level) in DevOps, Infrastructure, or DevSecOps in a cloud environment.
• Advanced proficiency in Python and/or Bash scripting for automation and operational support.
• Strong Linux/Unix command line proficiency, preferably on RHEL-based systems.
• Experience building and maintaining CI/CD pipelines using GitLab CI/CD, Jenkins, ArgoCD, and Helm.
• Strong proficiency with Docker — writing Dockerfiles, building hardened images, and integrating builds into pipelines.
• Hands‑on Kubernetes experience — cluster operations, workload management, RBAC, networking, and troubleshooting.
• Familiarity with agile methodologies and ability to operate effectively within a distributed team.
• Ability to travel up to 5% of the time.

Responsibilities

• Develop features to automate, scale, test, and secure a Kubernetes-based infrastructure running on AWS with RKE2.
• Build, optimize, and maintain CI/CD pipelines using GitLab CI/CD, Jenkins, and ArgoCD, supporting automated build, test, scan, and deployment workflows.
• Author, template, and manage Helm charts for application and infrastructure deployment across multiple environments.
• Build and maintain hardened Docker container images, including STIG-compliant base images, optimized Dockerfiles, and integration with Harbor and CI/CD pipelines.
• Manage and scale RKE2 Kubernetes clusters, including workload scheduling, networking, RBAC, secrets management, and cluster lifecycle operations.
• Administer Harbor (container registry) and Nexus (artifact repository), ensuring availability, security, and pipeline integration.
• Integrate Trivy and SonarQube into pipelines; remediate findings in coordination with security stakeholders.
• Enhance performance monitoring; identify bottlenecks and optimize cloud infrastructure and resource utilization.
• Author Python and Bash automation scripts to reduce toil and support infrastructure lifecycle management.
• Maintain technical documentation, runbooks, and architecture diagrams.

Skills

Python

Bash scripting

Linux/Unix

Agile methodologies

Travel willingness

Security awareness

Education

Bachelor's degree in Computer Science or related field

Equivalent experience

Tools

Kubernetes

Docker

GitLab CI/CD

Jenkins

ArgoCD

Helm

Harbor

Nexus

Trivy

SonarQube

Terraform

Packer

Ansible

Job description

CACI International Inc is seeking a Senior DevSecOps Engineer to design, build, and secure a scalable AWS-based Kubernetes ecosystem. You will own automation, CI/CD pipelines, container security, and infrastructure lifecycle across multiple environments.

Required TS/SCI with polygraph, 3+ years (mid) or 6+ years (senior) in DevOps, strong Python/Bash skills, and hands-on Kubernetes experience. Travel up to 5% is expected.