Senior Systems Administrator

Senior Systems Administrator

The ideal candidate for this role will possess a combination of interpersonal skills and system administrator expertise. This position involves improving technology for a mission-critical network, focusing on Linux systems, container orchestration like Kubernetes, and automation tools such as Ansible. The role requires bridging complex technical execution with client-facing communication, managing and optimizing infrastructure, and ensuring the architecture, security, and performance of systems and containerized environments.

Key Responsibilities

• Manage and optimize infrastructure, focusing on the architecture, security, and performance of systems and containerized environments.
• Provide customers insight into their network through monitoring and performance management.
• Identify problem areas and opportunities for improvement in a mission-critical network.
• Translate complex technical requirements into solutions for clients and engineers.
• Share expertise through leadership and mentoring to help the team work through challenges and develop new methodologies.
• Identify new opportunities to modernize the network to help clients achieve their goals.

Required Qualifications

• 7+ years of experience in Linux Administration.
• Experience with automation tools such as Ansible or Terraform.
• Experience with containers such as Docker, Kubernetes, or Podman.
• Experience with SELinux and FApolicyd, STIG hardening, Identity Management (IdM/LDAP), and managing secrets and certificates.
• Knowledge of IT networking and security concepts.
• Bachelor's degree in Computer Science, Engineering, or a STEM field.
• DoD 8570 IAT Level II Certification.

Preferred Qualifications

• Experience in administration of RHEL.
• Experience deploying and managing production Kubernetes clusters such as OpenShift, EKS, or RKE.
• Experience with Helm charts, Kustomize, and managing persistent container storage interface (CSI) and container networking interface (CNI).
• Experience integrating IaC and Ansible into pipelines such as GitLab CI, Jenkins, or GitHub Actions.
• Knowledge of IP tables and NFTables, DNS, load balancing, HAProxy, Nginx, and namespace.
• Ability to use troubleshooting tools such as ss, netstat, tcpdump, traceroute, and ping to isolate network problems.
• Ability to conduct performance tuning, kernel patching, and debugging as well as optimizing Linux kernels for container workloads such as tweaking sysctl for K8s.
• Master's degree in Computer Science, Engineering, or a STEM field.
• Red Hat Certified Engineer (RHCE) or Linux Foundation Certified Engineer (LFCE) Certification.