Linux System Administrator

About the role

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2026! Belay Technologies is seeking a Linux Systems Administrator / DevOps Engineer with 10+ years of experience and a technical degree to support secure, mission-critical environments. The ideal candidate will have extensive experience administering enterprise Linux systems, managing system performance and security, troubleshooting complex infrastructure issues, and deploying and maintaining Kubernetes clusters and containerized applications. Belay Technologies is a certified Service-Disabled Veteran-Owned Small Business located in Columbia, Maryland (Baltimore/Washington area). The company specializes in systems automation and full stack development, providing leading technology and engineering solutions to the DoD as well as state-of-the-art commercial products.

Responsibilities

• Implementing security hardening and vulnerability remediation
• Managing container orchestration and high availability
• Leveraging automation and Infrastructure as Code tools such as Ansible, Terraform, Git, Jenkins, and GitLab CI/CD to streamline infrastructure provisioning, configuration management, and deployment workflows

Required Qualifications

• 10+ years of professional experience in systems administration, infrastructure engineering, DevOps, platform engineering, software engineering or a closely related field
• Active TS/SCI clearance with Polygraph
• Extensive hands-on experience administering Linux operating systems in enterprise or mission-critical environments
• Demonstrated experience deploying, operating, and troubleshooting Kubernetes clusters and containerized applications
• Strong knowledge of container technologies, including Docker, containerd, and OCI-compatible images
• Experience with scripting and automation using Bash, Python, or similar languages
• Proficiency with configuration management and Infrastructure as Code tools, such as Ansible and Terraform
• Experience with Git-based version control and CI/CD platforms
• Strong understanding of TCP/IP networking, DNS, routing, firewalls, load balancing, and Linux network troubleshooting
• Experience with system monitoring, log analysis, performance tuning, and root cause analysis
• Knowledge of Linux and container security, system hardening, vulnerability remediation, and access control
• Ability to work independently, manage competing priorities, and communicate technical issues effectively

Preferred Qualifications

• Experience working with Red Hat Enterprise Linux and Kubernetes distributions such as Red Hat OpenShift or Rancher Kubernetes
• Familiarity with GitOps tools such as Argo CD or Flux
• Experience with Helm, Kustomize, and Kubernetes operators
• Experience implementing DISA STIGs, Security Content Automation Protocol (SCAP) assessments, and vulnerability remediation workflows
• Familiarity with security monitoring tools such as Splunk and enterprise observability platforms