Senior Linux Systems Administrator

rapidfortinc; United States; Remote; USD 125,000 - 165,000; Full time

Benefits offered by this job

Equity

Benefits

Job summary

RapidFort Inc. is seeking a senior systems administrator to own the day-to-day reliability, security, and upkeep of a broad infrastructure estate across Linux servers, storage, virtualization, networks, and cloud resources.

The role includes leading incident response and driving operational improvements. You will build, configure, harden, and maintain Linux systems, operate physical servers, VMs, containers, and storage, and manage cloud resources and self-hosted CI/Git services.

Qualifications

• At least 8 years of hands-on Linux systems administration experience with kernel, filesystem, and networking issues.
• Proficiency in managing Linux servers, virtualization, containers, storage, and lifecycle upgrades.
• Strong networking knowledge including routing, firewalls, DHCP, and DNS, with secure remote access.

Responsibilities

• Build, configure, harden, and maintain Linux systems and services.
• Operate physical servers, VMs, containers, and storage, including lifecycle upgrades.
• Run and troubleshoot network services and connectivity across data centers, cloud resources, and remote staff.
• Manage cloud resources and self-hosted Git and CI services, including mirrors and runners.
• Diagnose production issues using logs and metrics; lead incident response and document findings.
• Automate provisioning and routine operations with scripts and configuration management.

Skills

Linux troubleshooting

Bash scripting

Python basics

Networking fundamentals

Tools

Ansible

Git

CI runners

Job description

Role overview

Own the day-to-day reliability, security, and upkeep of a broad infrastructure estate as a senior individual contributor. The scope runs from Linux servers, storage, and virtualization through networks, cloud resources, and self-hosted development systems; the role also leads incident response and operational improvements.

Responsibilities

• Build, configure, harden, and maintain Linux systems, including access controls, services, packages, and operating-system lifecycle updates.
• Operate physical servers, virtual machines, and containers; manage storage, capacity, hardware issues, and configuration consistency.
• Run and troubleshoot network services such as routing, firewalls, DHCP, DNS, and connectivity between data centers, cloud resources, and remote staff.
• Manage cloud resources and self-hosted engineering tools, including source control, CI runners, build machines, and package mirrors.
• Diagnose production issues using logs, metrics, and command-line tools; lead incident response, document findings, and complete follow-up fixes.
• Automate provisioning and routine operations with scripts and configuration management, keeping changes in version control and deploying through review.

Requirements

• At least 8 years of hands-on systems administration experience and deep Linux troubleshooting skills, including kernel, filesystem, systemd, performance, and networking issues.
• Practical experience operating physical Linux servers, virtualization, containers, storage, and server lifecycle upgrades.
• Strong networking knowledge covering routing, firewalls, DHCP, DNS, and secure remote access.
• Experience administering AWS resources, especially compute and object storage, and operating self-hosted Git and CI services.
• Proficiency in Bash and working knowledge of Python; experience maintaining Ansible or comparable configuration-management automation.
• Strong security and operational judgment, including patching, least privilege, change planning, rollback, incident documentation, and clear written English.

Nice to have

• Server management controllers, RAID, data-center operations, GPU infrastructure, alternative virtualization platforms, or SAN/NAS storage.
• Monitoring and intrusion detection, build farms, package caches, backup systems, compliance controls, Debian-based systems, or additional cloud providers.

Benefits and work setup

• Full-time, remote individual-contributor position in the United States. U.S. citizenship is required.
• Listed base salary is $125,000–$165,000 annually, plus equity and benefits.