Senior Linux Systems Engineer – Remote, Secure Infra

Lumen; Montpelier (VT); Remote; USD 83,000 - 111,000; Full time

Job summary

Lumen is seeking a Senior Linux Systems Administrator to design, secure, and operate Linux-based infrastructure for a federal-oriented program. You will handle virtualization (VMware and KVM), authentication services, vulnerability management, and automation.

The role requires building infrastructure from the ground up, extensive Linux experience, and the ability to work with CI/CD pipelines, REST APIs, and monitoring tools. Remote work across the U.S. is supported.

Qualifications

• Six or more years of Linux systems/infrastructure experience.
• Advanced administration with Ubuntu and RHEL.
• Strong CLI skills and Bash scripting ability.
• Experience building production infrastructure from scratch.
• Hands-on with VMware ESXi, vCenter, vSphere.

Responsibilities

• Design and build secure Linux infrastructure from requirements to production handoff.
• Install, configure, patch, harden, and troubleshoot Ubuntu and RHEL systems.
• Manage VMware ESXi, vCenter, and vSphere environments and resources.
• Build and maintain KVM virtualization environments and migrations.
• Provision servers and integrate with network, storage, DNS, and security services.
• Manage LDAP/AD integrations and certificate trust lifecycle.
• Oversee Nessus vulnerability scanning configurations and remediation.
• Maintain Zabbix and Elastic Stack for monitoring/logging.
• Develop automation with Ansible, Bash, and Python; use Git/GitLab CI/CD.
• Support REST API integration and basic Flask/Django apps; document procedures.
• Travel 5-20% for on-site customer meetings and hardware servicing.

Skills

Linux systems

Bash scripting

Python

Git

Ansible

Networking

Security

LDAP/AD integration

VMware ESXi

KVM virtualization

Nessus

Zabbix

Elastic Stack

REST APIs

Kubernetes

Tools

vCenter

vSphere

Nessus

Zabbix

Elastic Stack

Ansible

Git

Python

Flask

Django

LDAP

Active Directory

REST APIs

GitLab CI/CD

Job description

Lumen is seeking a Senior Linux Systems Administrator to design, secure, and operate Linux-based infrastructure for a federal-oriented program. You will handle virtualization (VMware and KVM), authentication services, vulnerability management, and automation.

The role requires building infrastructure from the ground up, extensive Linux experience, and the ability to work with CI/CD pipelines, REST APIs, and monitoring tools. Remote work across the U.S. is supported.