Senior Linux Systems Architect (Remote) - Security & Virtualization

Lumen; Annapolis (MD); Remote; USD 93,000 - 124,000; Full time

Benefits offered by this job

Health benefits

Life benefits

Voluntary lifestyle benefits

Bonus structure

Job summary

Lumen is seeking a Senior Linux Systems Administrator to design, build, secure, operate, and maintain Linux-based infrastructure for a classified federal program. The role emphasizes VMware/KVM virtualization, automation, and secure network connectivity.

This remote opportunity is open to candidates anywhere in the U.S. with 5+ years of Linux experience, TS clearance, and travel up to 20% for on-site support. You’ll work with Python, Ansible, and GitLab CI/CD to support REST integrations.

Qualifications

• Five+ years of Linux systems experience.
• Advanced admins for Ubuntu and RHEL.
• Strong CLI troubleshooting and Bash scripting.
• Proven ability to design/build production infra from scratch.
• Hands-on VMware ESXi/vCenter and vSphere admin experience.
• Experience with KVM or similar virtualization.
• Experience with Nessus vulnerability management.
• Knowledge of LDAP/AD integration and PKI concepts.
• Familiarity with REST APIs and automation tooling.

Responsibilities

• Design and build secure Linux infra from requirements to production.
• Install, configure, patch, harden, and troubleshoot Linux systems.
• Perform advanced command-line admin with Bash and diagnostics.
• Administer VMware ESXi, vCenter, and vSphere environments.
• Build and maintain KVM virtualization environments and evaluate migrations.
• Provision physical and virtual servers and integrate with network, storage, DNS, NTP, monitoring, security.

Skills

Linux admin

VMware ESXi/vCenter

KVM virtualization

Bash scripting

Python

Git/GitLab CI/CD

LDAP/AD integration

Nessus vulnerability mgmt

REST API integration

Tools

Nessus

Zabbix

Elastic Stack

Ansible

Job description

Lumen is seeking a Senior Linux Systems Administrator to design, build, secure, operate, and maintain Linux-based infrastructure for a classified federal program. The role emphasizes VMware/KVM virtualization, automation, and secure network connectivity.

This remote opportunity is open to candidates anywhere in the U.S. with 5+ years of Linux experience, TS clearance, and travel up to 20% for on-site support. You’ll work with Python, Ansible, and GitLab CI/CD to support REST integrations.