> Markdown version of [/jobs/ext/3465504-linux-system-administrator](https://www.wearedevelopers.com/jobs/ext/3465504-linux-system-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Linux System Administrator - **Company:** CYBERLYNK NETWORK, LLC - **Location:** Franklin, WI, United States - **Experience:** Starter - **Salary:** $65,000.0 - $85,000.0 - **Contract:** Permanent contract - **Skills:** PHP (Programming Language), Apache HTTP Server, Macintosh Computers, Apple Mac Systems, Bash Shell, Ubuntu (Operating System), CentOS, Command-Line Interface, Control Panels, Debian Linux, Linux, Disaster Recovery, Domain Name System (DNS), Message Transfer Agent, HTTP Secure, IT Management, Python (Programming Language), Kernel-Based Virtual Machine, Linux System Administration, Linux Servers, MariaDB, MySQL, Nginx, Red Hat Enterprise Linux, LiteSpeed, Shell Script, Transmission Control Protocol (TCP), Virtualization Technology, Web Applications, Web Hosting Services, Internet Protocol Telephony, Transport Layer Security, Firewalls (Computer Science), Server Operating Systems & Platforms - **Published:** September 16, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=42ac44ebd5dce86e ## About the Role * 1-3+ years of professional Linux system administration experience with Debian-family distributions (Debian, Ubuntu), and familiarity with RHEL-family distributions (AlmaLinux, Rocky Linux, CentOS). * Working knowledge of DNS concepts and experience managing DNS servers (BIND, PowerDNS, or similar) * Experience with the standard web hosting stack: Apache/LiteSpeed/NGINX, PHP, MySQL/MariaDB, Exim or similar MTAs * Solid understanding of TCP/IP networking, firewalls, and SSL/TLS * Strong customer service skills and clear written and verbal communication; comfortable working directly with customers * Ability to work onsite in the Milwaukee, WI metro area Preferred Qualifications * Experience administering servers in a web hosting environment * Experience with CloudLinux, Imunify360, and KernelCare * Experience with KVM or other virtualization platforms * Shell scripting (Bash) or basic Python for task automation * Experience in a web hosting, ISP, or MSP environment * Red Hat certification (RHCSA or RHCE), cPanel University certifications, or comparable credentials (preferred, not required) ## Description CyberLynk is looking for a Linux System Administrator to help run and support the Linux infrastructure behind our hosting, cloud, and virtualization services. You will help administer our shared, reseller, VPS, and dedicated servers, keep core infrastructure such as DNS resolvers and authoritative DNS servers healthy and secure, and act as a technical support resource for our hosting customers. You will also occasionally support our VoIP systems and hosted Macs as needed. You will work alongside a senior director for an extended transition period, giving you a long runway to learn the environment before taking full ownership of your piece of it. What You Will Do * Administer and maintain shared, reseller, VPS, and dedicated cPanel/WHM servers, including provisioning, configuration, patching, and upgrades * Provide technical support for hosting customers, resolving issues across DNS, mail delivery and reputation, SSL/TLS, and web application performance. * Manage and maintain core Linux infrastructure, including DNS resolvers and authoritative DNS servers (BIND/PowerDNS) * Monitor server health, respond to alerts, and resolve performance, availability, and capacity issues * Harden and secure servers using CloudLinux, Imunify360, and KernelCare, and respond to abuse and security incidents such as malware and compromised accounts * Manage backups and disaster recovery processes, and perform data restorations for customers * Administer KVM-based virtualization hosts supporting VPS customers * Perform server migrations and account transfers between servers * Document systems, procedures, and troubleshooting steps * Help evaluate, test, and pilot new and adjacent services as customer needs evolve, from proof of concept through production rollout. * Participate in a shared on-call rotation for after-hours coverage approximately every 8-12 weeks, * Describe your hands-on experience administering Linux servers in a production environment. This could include hosting/cloud platforms (shared, reseller, VPS, dedicated), enterprise IT, or other server environments; please specify the type of environment and your role in managing it. * Walk us through how you would set up SSH key-based authentication for a new Linux server and then disable password logins entirely. What commands or files are involved? * Describe your day-to-day approach to managing Linux servers. Do you primarily work from the command line, or do you rely on a control panel like Webmin, cPanel, or Plesk? Please be specific. * Do you have any experience with VoIP systems and/or Mac OS administration? If so, please briefly describe your level of exposure.