Senior Infrastructure Engineer Cloud And Kubernetes

Job description / Role

Category

Information technology

Job location

Denver, Colorado

Position type

Full-time / regular

Calibre is an employee-owned mission focused solutions and digital transformation company. We are seeking a senior infrastructure engineer to design, deploy, and secure cloud-native and Kubernetes-based platforms for government clients. This role includes supporting Spectro Cloud Kubernetes installations in classified and air-gapped environments. You will be instrumental in building and automating Linux and hybrid cloud infrastructure to enable secure and scalable mission outcomes.

This position can be based in Melbourne, FL; Huntsville, AL; Denver, CO; or Salt Lake City, UT.

Key responsibilities

• Architect and deploy secure, scalable Linux and Kubernetes infrastructures for government environments.
• Guide client teams on cloud adoption, infrastructure modernization, and DevSecOps best practices.
• Implement automation using Ansible, Terraform, and CI/CD tools to streamline infrastructure operations.
• Ensure compliance with cybersecurity frameworks such as STIG, RMF, and related DoD requirements.
• Troubleshoot and optimize performance across complex, distributed systems.
• Mentor client teams on Kubernetes operations, infrastructure automation, and secure cloud practices.

Required skills

• Strong experience in Linux infrastructure and cloud-native environments
• Hands-on Kubernetes administration (2+ years)
• CI/CD pipeline development and management (3+ years) using GitLab, Jenkins, ArgoCD, etc.
• Automation expertise with Ansible, Terraform, Python, and Bash
• Experience securing and troubleshooting distributed systems
• Knowledge of DoD security frameworks (STIG, RMF)
• Strong communication and mentoring abilities
• DoD 8570 IAT Level II certification (Security+ or equivalent)

Required experience

• U.S. citizenship with active Top Secret clearance
• 8+ years of infrastructure engineering experience
• 2+ years of Kubernetes administration
• 3+ years of CI/CD pipeline work
• Willingness and ability to travel up to 50%

Preferred experience

• Experience with Spectro Cloud Kubernetes
• VMware and Windows infrastructure in hybrid environments
• Familiarity with RMF and ATO processes
• Certifications such as CKA, CKAD, RHCE, AWS, Azure
• GitOps tools (ArgoCD, Flux)
• Exposure to edge computing and air-gapped deployments

Calibre and its subsidiaries are an equal opportunity employer and support transitioning service members, veterans, and individuals with disabilities. We offer a competitive salary and full benefits package. Come join our dynamic team.