Senior Linux Systems Administrator - Remote, Secure Infra & DevOps

Lumen Technologies, Inc.; Oregon; Remote; USD 87,000 - 116,000; Full time

Job summary

Lumen Technologies, Inc. is seeking a Senior Linux Systems Administrator to design, build, secure, operate, and maintain Linux-based infrastructure for a classified federal program.

The role focuses on advanced Linux administration, VMware and KVM virtualization, and infrastructure deployment for mission-critical workloads. You will implement automation with Ansible, Bash, and Python; manage LDAP/AD integrations and SSL/TLS certificates; monitor with Zabbix and Elastic Stack; and support REST

Qualifications

• Six or more years of Linux infrastructure experience.
• Advanced administration of Ubuntu and RHEL.
• Experience with VMware ESXi, vCenter and vSphere.
• Proficient with Nessus and vulnerability management.
• LDAP/AD integration and PKI knowledge.
• Automation with Ansible, Python, and Bash.

Responsibilities

• Design and build secure Linux infrastructure from requirements to production.
• Administer VMware ESXi, vCenter, and vSphere environments.
• Manage KVM virtualization and integration with network and storage.
• Automate deployment and configuration with Ansible, Bash, and Python.
• Support REST API integrations and monitoring deployments.
• Participate in upgrades, incident response, and capacity planning.

Skills

Linux system administration

Bash scripting

Troubleshooting

Security hardening

Automation design

Tools

VMware ESXi/vCenter/vSphere

KVM virtualization

Nessus

LDAP/AD integration

Ansible

Python

Git

GitLab CI/CD

Zabbix

Elastic Stack

Flask/Django (REST apps)

REST APIs

Kubernetes

Job description

Lumen Technologies, Inc. is seeking a Senior Linux Systems Administrator to design, build, secure, operate, and maintain Linux-based infrastructure for a classified federal program.

The role focuses on advanced Linux administration, VMware and KVM virtualization, and infrastructure deployment for mission-critical workloads. You will implement automation with Ansible, Bash, and Python; manage LDAP/AD integrations and SSL/TLS certificates; monitor with Zabbix and Elastic Stack; and support REST