Linux System Administrator Job at Cellcom, Green Bay, WI

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  • Cellcom
  • Green Bay, WI

Job Description

The Linux Systems & Automation Engineer is responsible for designing, deploying, automating, and operating enterprise Linux infrastructure and supporting applications running there. This role focuses on infrastructure-as-code, automation tooling, monitoring, and reliability engineering across on-prem and hybrid environments. The engineer will collaborate with network, platform, and application teams to deliver scalable, secure, and repeatable infrastructure.

Key Responsibilities

Linux Systems Engineering

  • Design, deploy, and maintain Linux systems across bare metal and virtual environments.
  • Develop and enforce OS baseline standards, hardening, and patching processes.
  • Manage system lifecycle: provisioning, configuration, upgrades, and decommissioning.

Automation & Infrastructure as Code

  • Build and maintain automation pipelines using Ansible, Terraform, cloud-init, or equivalent tools.
  • Develop Ruby/Python/Bash tooling to automate operational workflows.
  • Create standardized system images, templates, and deployment frameworks.

Monitoring, Observability, and Reliability

  • Design and maintain monitoring and telemetry platforms and data pipelines. (Zabbix, Prometheus, Grafana, OpenSearch, etc.).
  • Analyze metrics and logs to improve system reliability and performance.
  • Participate in on-call and incident response.
  • Conduct root cause analysis and drive corrective actions.

DevOps & Tooling

  • Develop and Maintain Git-based workflows and CI/CD pipelines for infrastructure code.
  • Develop internal tools to improve provisioning, validation, and operational efficiency.
  • Collaborate in architecture reviews and technical design discussions.

Requirements:

  • Bachelor’s degree in Computer Science, Engineering, Information Systems, or equivalent experience.
  • 5+ years of experience administering Linux systems in enterprise environments.
  • Strong Linux fundamentals (processes, networking, storage, security, kernel concepts).
  • Proficiency in scripting/programming (Python, Bash, Ruby, etc.).
  • Experience with Git and collaborative development workflows.
  • Experience with automation/configuration management tools (Ansible, Terraform, Puppet, Chef, etc.).

Preferred Qualifications

  • Experience with containers and orchestration (Docker, Kubernetes).
  • Virtualization experience (VMware, KVM, OpenStack).
  • Cloud platform experience (AWS, Azure, GCP) or hybrid architectures.
  • Monitoring/observability tooling experience (Prometheus, Grafana, Zabbix, ELK/OpenSearch).
  • Security experience (SSH hardening, PAM, SELinux, CIS benchmarks).
  • Experience supporting telecom, financial, healthcare, or other regulated environments.

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