Senior DevSecOps Engineer

CACI • Chantilly, VA

23h

About The Position

As part of the Clairvoyant program, you will build and support the backbone of a mission-critical, cloud-native ecosystem — a scalable software-hosting and data-dissemination platform designed to accelerate the deployment of advanced analytics. You will bridge complex mission requirements and high-performance automated infrastructure, owning everything from secure pipeline design to cloud resource optimization. As a DevOps / Infrastructure / DevSecOps Engineer on an AWS-based, Kubernetes-native environment, you will: Architect Resilience: Design and maintain scalable RKE2/Kubernetes infrastructure on AWS with high availability and fault tolerance. Orchestrate Delivery: Build and refine CI/CD pipelines using GitLab CI/CD, ArgoCD, Jenkins, and Helm for seamless code-to-cloud transitions. Secure the Stack: Integrate automated security scanning (Trivy, SonarQube) and enforce compliance with government security standards throughout the development lifecycle. Optimize Performance: Identify bottlenecks and engineer solutions across cloud and container environments, from cluster tuning to artifact management.

Requirements

• 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.

Nice To Haves

• Experience with AWS services and cloud-native infrastructure patterns.
• Hands-on experience with Terraform for cloud resource provisioning and IaC.
• Experience with RKE2 or other enterprise Kubernetes distributions in air-gapped or restricted environments.
• Familiarity with Harbor, Nexus, Trivy, and SonarQube in a pipeline context.
• Experience with Cilium for Kubernetes network policy and cluster networking.
• Experience with Packer or Ansible for image and configuration management.
• Relevant certifications: CKA/CKAD/CKS, AWS DevOps Professional, or CompTIA Security+

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.

Benefits

• Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives.
• We offer competitive compensation, benefits and learning and development opportunities.
• Our broad and competitive mix of benefits options is designed to support and protect employees and their families.
• At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees