Hire the Best Red Hat Enterprise Linux (RHEL) Specialists

⭐️ Top Rated Plus - Top 3% Expert on Upwork 🕒 9000+ Working Hours ✅ 20+ Years of Expertise ✅ 100% Job Success ✅ 300+ Successful Projects Finished ✅ 5 Star Rating Hello, I'm Oleksandr. As a seasoned Linux System Administrator and DevOps Engineer with over 20 years of experience I specialize in delivering robust IT solutions that enhance operational efficiency and security. My expertise spans across various domains, including: ▪ DevOps & Automation: Successfully implemented automated provisioning using Ansible, streamlining deployment processes and reducing manual intervention. ▪ Linux & FreeBSD Maintenance: Managed and optimized server environments on CentOS, Debian, Ubuntu, RHEL, and FreeBSD, ensuring high availability and performance. ▪ Cloud Hosting: Deployed and maintained scalable cloud solutions on AWS, Azure, and DigitalOcean, enhancing infrastructure reliability and scalability. ▪ Virtualization: Utilized Docker, VirtualBox, and OpenVZ to create flexible and efficient virtual environments, supporting diverse application needs. ▪ Web & Database Servers: Configured and maintained Apache, Nginx, MySQL, PostgreSQL, and MongoDB servers, ensuring secure and efficient data handling. ▪ Networking & Security: Implemented secure networking solutions, including VPNs and firewalls, to protect sensitive data and maintain network integrity. I am committed to continuous improvement and staying abreast of the latest industry trends. My approach is rooted in ITIL best practices, ensuring incident management and business continuity planning are at the forefront of my work. Let's collaborate to drive your IT projects to success with innovative solutions and expert guidance.

✏️ TOP RATED PLUS WITH PROVEN 10+ YEARS EXPERIENCE IN SERVER ADMINISTRATION & DEVOPS ✏️ 5 STAR REVIEWS ALL THE TIME ✏️ ASSURED PROFESSIONAL WORK ✏️ FANTASTIC WEEKEND SUPPORT ✏️ GOOD AVAILABILITY IN USA WORKING HOURS ✏️ TIGHT DEADLINES, YOU ARE ON THE RIGHT PROFILE ✏️ 07 DAYS FREE MAINTENANCE/SUPPORT AFTER COMPLETION OF ASSIGNMENT. Linux & Windows Server Administrator with more than 10 years of Experience. - Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, Alibaba Cloud, DigitalOcean, Linode, OVH, Vultr, Rackspace, Hetzner, Oracle Cloud, Kamatera, Contabo, Scaleway, InterServer, Liquid Web, Hostinger, BlueHost, HostGator, GoDaddy, Media Temple, Namecheap, DreamHost, SiteGround, A2 Hosting, InMotion Hosting, iPage, GreenGeeks, AccuWeb Hosting, TMDHosting, FastComet, Cloudways, WP Engine - Docker, bastion host, Kubernetes, Ansible - Apache, IIS, Nginx, Tomcat, Varnish, Mod_pagespeed - Control Panel: cPanel, WHM (WebHost Manager), Plesk, DirectAdmin, Webmin, Virtualmin, VestaCP, ISPConfig, Ajenti, CentOS Web Panel (CWP), CyberPanel, Froxlor, Ensim, InterWorx - OS: CentOS, Debian, RHEL, Ubuntu, Windows Server. - Mail Server: Exim, Postfix, Sendmail, PowerMTA, InterSpire, Sendgrid - Database: Mariadb, MySQL, SQL Server, PostGreSQL - DNS: Domain management, MX, CNAME, SPF, DKIM, TXT, Cloudflare, CDN firewalls - WebSite Setup, Optimization and Migration Support for Wordpress, Joomla, Net, Magento, Xcart, Opencart based websites - Experience with Chef, Puppet, Docker or similar applications - SSL Setup, Website Security, Server Hardening, Windows Linux Maintenance Troubleshooting, and Monitoring. #LinuxAdministrator, #WindowsServerAdministrator, #SystemAdministrator, #DevOpsEngineer, #CloudEngineer, #AWS, #Azure, #GoogleCloud, #Docker, #Kubernetes, #Ansible, #Terraform, #Apache, #Nginx, #cPanel, #Plesk, #ServerMigration, #ServerHardening, #SSLConfiguration, #PowerMTA, #Postfix, #EmailDeliverability, #WordPressSupport, #WebHosting, #Virtualization, #VMware, #HyperV, #BashScripting, #MySQL, #DNSManagement, #Cloudflare #SillyTavern

I am an experienced Linux administrator. I have 15+ years of experience in Linux system administration and problem-solving. I can troubleshooting all kinds of linux issues, centos migration, centos/ubuntu crash rescue, investigate server performance issue and web server administration. Skills & Deliverables: Cloud Infrastructure & Dedicated VPS Setup (AWS, DigitalOcean, Hetzner, Contabo, Linode etc) Building secure, high-performance servers with proper backup, and automation. Linux Administration(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Performance optimization, monitoring, troubleshooting, log analysis, and uptime management. Server migration(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Secure migration of data and app between different servers. Web Server Trouble-shooting Slow server, website troubleshooting and optimization Recurring downtime issue troubleshooting and fix. Centos7 server migration Upgrade centos7 to almalinux 8 or 9. Migrate data&apps from centos7 to Ubuntu/Debian/Rocky/Almalinux Server Upgrade(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Upgrade ubuntu 14 16 18 20 22 to the latest version. Upgrade Debian , Rocky Linux, Almalinux to the latest version Server rescue(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Fix linux system crash, file system corruption. Security & Compliance Firewall configuration, access control, TLS/SSL, patching, vulnerability prevention. Backup & Disaster Recovery Strategy Automated backups, retention policies, restore testing, failover planning. Application Hosting & Migration WordPress, Prestashop, Forum app, Node.js, Python apps — smooth migration without downtime. Email Infrastructure & Deliverability Improvement Domain authentication setup (SPF / DKIM / DMARC), inbox placement, fixing spam issues. Why choose me? - Strong skills and extensive experience , can work independently and efficiently , able to fix complex issues - Fast and clear communication, detail and solution oriented - Honest and proactive work ethic

System Administrator I work with virtualization, self-hosted services, storage and backups and on-premise cloud infrastructure. 🔹 Areas of Expertise: Virtualization 🔹 Proxmox HA clusters with Ceph storage for redundancy and scalability. 🔹 FreeBSD with vm-bhyve hypervisor. 🔹 XCP-ng. Networking & VPNs 🔹 Setting up and managing MikroTik and pfSense firewalls. 🔹 Configuring Wireguard and OpenVPN solutions for remote access across businesses. 🔹 GL-iNet travel routers for Digital Nomad VPN solutions. Self-Hosting & Custom Server Solutions 🔹 Managing self-hosted applications like Nextcloud, Seafile, and WordPress and others. 🔹 Configuring Nginx and Apache servers for web hosting. NAS & Storage Solutions 🔹 Setting up and managing TrueNAS, Synology, and Unraid. 🔹 Configuring ZFS-based storage solutions for redundancy and performance. 🔹 Implementing NFS, and SMB shares. Storage & Backup Strategies 🔹 Implementing Rsync, Rclone, and Syncthing for data synchronization and backups. 🔹 Managing ZFS-based storage for redundancy and backup. Remote Access & Virtual Desktop. 🔹Apache Guacamole, KasmVNC, NoMachine. Cloud 🔹 Working with AWS and Oracle Cloud. Technical Expertise: 🔹 Operating Systems: FreeBSD, Ubuntu, Debian. 🔹 Virtualization & Containers: Proxmox, vm-bhyve, XCP-ng, Docker. 🔹 Networking & Security: MikroTik, pfSense, WireGuard, OpenVPN. 🔹 NAS & Storage: TrueNAS, Synology, Unraid, ZFS, NFS, SMB. 🔹 Storage & Backups: TrueNAS, Synology, Unraid, Rsync, ZFS. 🔹 Web & Cloud Services: Nginx, Apache, AWS, Oracle Cloud.

I have more than 15 years of working experience as a Linux admin. Installing updating testing new Confluence plugins using Apache JMeter and Jenkins !! Tuning and upgrading the Environment, Apache tomcat, Oracle JDBC, Monitoring the JVM. USING Grafana and Influx DB. checking for Java threads problems !! check CPU and Memory usage and Apache tomcat ORACLE errors. Installing configuring Linux, Apache, MySQL, PHP .postfix Nagios,Zabbix.MySql . troubleshooting . and log monitoring and docker. I studied both cyber security and digital forensics coursed. So I have practical experience on the following . Security: Ethical Hacking & Countermeasures, Managing Secure Network Systems,Linux Networking, and Security, Conducting Penetration and Security Tests, Securing Wireless Networks, Investigating Network Intrusions and Computer Forensics. Malware analysis. Reverse Engineering. Principles of Secure Software Design.Hadoop. networking Tools: Wireshark.

Hi, I’m Sanjay — Top Rated DevOps & AWS Expert, Certified Linux Administrator, with 7+ years of hands-on experience managing servers, cloud infrastructures, and email systems. I specialize in deploying and maintaining secure, scalable, and high-performance environments for businesses of all sizes. Whether you need AWS infrastructure setup, email deliverability improvement, or Linux server optimization — I can help. Skills & Deliverables: Cloud Infrastructure Setup (AWS / DigitalOcean / Hetzner) Building secure, scalable environments with proper networking, storage, and automation. Server Administration (Linux-based systems) Performance optimization, monitoring, troubleshooting, log analysis, and uptime management. CI/CD & Deployment Automation Git-based deployments, zero-downtime releases, containerized workloads. Security & Compliance Firewall configuration, access control, TLS/SSL, patching, vulnerability prevention. Backup & Disaster Recovery Strategy Automated backups, retention policies, restore testing, failover planning. Application Hosting & Migration WordPress, Node.js, PHP apps — smooth migration without downtime. Email Infrastructure & Deliverability Improvement Domain authentication setup (SPF / DKIM / DMARC), inbox placement, fixing spam issues. Why Clients Choose Me Top Rated on Upwork with consistent 5-star performance Fast and clear communication — no miscommunication or delays Proactive monitoring and alerts (before issues impact users) Problem-solver mindset — I fix issues efficiently and permanently One of my recent projects involved building a fully containerized infrastructure on AWS using ECR + ECS (Fargate) with an automated CI/CD pipeline through CodePipeline & CodeBuild. This setup reduced deployment time from hours to minutes, improved uptime with zero-downtime deployments, and cut infrastructure costs significantly due to on-demand scaling.