Feri S.

Linux SysAdmin | Server Optimization & Email Specialist | cPanel, Proxmox, VPS Expert 🚀 I help businesses run fast, secure, and reliable Linux-based servers, covering everything from web hosting and virtualization to email deliverability and performance tuning. With over 10 years of hands-on experience and serving as a System Administrator at Wowrack, Inc. since 2015 (current role). I’ve deployed and optimized hundreds of cloud servers and VPS environments. Whether you’re facing slow website load times, email deliverability issues, or need a full WHM migration, I’ve got you covered. 🧰 Tech Stack & Tools I Work With: 🖥️ Linux Servers: Ubuntu, Debian, CentOS, AlmaLinux, CloudLinux ☁️ Virtualization: Proxmox, VMware, XenServer 🌐 Web Servers: Nginx, Apache, LAMP/LNMP stacks 🧳 Migration: Website migration, Linux OS upgrades 💌 Email Servers: Zimbra, Postfix, Dovecot, SpamAssassin 🛡️ System Security: Firewalls (UFW/IPTables), SSL, patching, access control 📊 Monitoring: ZAbbix, LibreNMS, Grafana, Netdata, Monit, custom scripts 📦 Hosting Panels: WHM/cPanel, Webmin/Virtualmin, WHMCS, CyberPanel 🎫 Ticketing & Support Systems: WHMCS, Kayako, ConnectWise, osTicket, Jira (Atlassian) 🛠️ Backup & DRC: Proxmox Backup Server, rsync, AWS, custom Disaster Recovery setups 💡 What I Can Help You With: 🔧 Set up or optimize your Linux server for speed, uptime, and scalability 🧳 Migrate websites or full servers between hosts or OS versions 💌 Configure or troubleshoot mail servers (Zimbra/Postfix/Dovecot) 🛡️ Harden your server with best-practice security & monitoring 🔄 Design a cost-effective DRC system for critical server continuity 🔍 Investigate and resolve performance issues, load spikes, or outages Clients value my responsiveness, deep troubleshooting ability, and commitment to performance and uptime. My portfolio: ferisetyawan(dot)com/portfolio/ 💬 Let’s collaborate to streamline your systems and keep your infrastructure running at its best! Best regards, Feri Setyawan Linux System Administrator 🌐 ferisetyawan(dot)com