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.

I help founders and developers deploy, fix, and scale their infrastructure. From broken Docker containers and Nginx issues to full VPS deployments with SSL and CI/CD — I focus on solving real infrastructure problems fast and cleanly. What I work with: • Docker & Docker Compose • Linux / Ubuntu servers • Nginx & reverse proxies • CI/CD pipelines • Cloud & VPS deployments • FastAPI & PostgreSQL • Kubernetes basics • Infrastructure troubleshooting I already have hands-on experience maintaining Linux infrastructure, deploying web services, configuring SSL, and troubleshooting production issues. If your app needs deployment, debugging, or a stable server setup — I can help.

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

With 20 years in the IT industry, I design, build, and maintain cloud infrastructures ranging from straightforward single-server setups to complex multi-provider architectures. My background spans MSPs, SaaS startups, and enterprise hosting operations, where I've led technical teams and delivered reliable, scalable systems from the ground up. I work asynchronously and do not conduct screen-share sessions. You'll get thorough documentation, clear communication, and results delivered efficiently on your timeline. * AWS Certified * Linux (All flavors, including RHEL/CentOS/Alma/Rocky, Debian/Ubuntu) * Most cloud providers (AWS, GCP, Azure, OVH, Contabo, Digital Ocean, Linode, etc) * Wordpress and most common CMSs * cPanel & WHM, Plesk, Cloudpanel * Server and Infrastructure Migrations * Infrastructure hardening and SOC compliance Full resume available upon request.

Senior Linux & Cloud Infrastructure Engineer | 5+ Years Managing Production Environments I help businesses achieve 99.9%+ uptime, reduce infrastructure costs, and scale their web applications securely. ✅ PROVEN TRACK RECORD: - Currently managing 60+ production Linux servers (Ubuntu, CentOS, RHEL) for enterprise clients - Reduced server response time by 40% through optimization and CDN integration - Implemented automated backup systems saving clients 15+ hours/week - Zero critical security breaches in 5 years through proactive hardening 💼 CORE EXPERTISE: → Linux Server Administration (Ubuntu, CentOS, RHEL, Debian) → Cloud Platforms: AWS (EC2, S3, Route 53, IAM), Azure, Google Cloud → WordPress Infrastructure: GridPane, LiteSpeed, ModSecurity WAF, Cloudflare → Microsoft 365 & Azure AD: Full tenant management, MFA, Conditional Access → Automation: Ansible, Bash scripting, Infrastructure as Code → Security: WAF configuration, DDoS protection, STIG compliance, Wazuh SIEM → Virtualization: Proxmox, VMware ESXi, Hyper-V → Monitoring: Zabbix, Grafana, Prometheus, Loki 🎯 I SPECIALIZE IN: ✓ High-availability WordPress hosting architecture ✓ Server migration with zero downtime ✓ Security hardening and compliance (ModSecurity, OWASP rules) ✓ Microsoft 365 administration and migration ✓ Custom automation to reduce manual tasks ✓ Emergency server recovery and troubleshooting 📊 CLIENT RESULTS: - Migrated 50+ WordPress sites with 100% data integrity - Optimized page load times from 4s to <1s through server tuning - Configured multi-layered security reducing spam by 95% - Automated reporting saving clients 20+ hours monthly 🔧 TECHNOLOGY STACK: Web Servers: Apache, Nginx, LiteSpeed Control Panels: GridPane, cPanel, Plesk, aaPanel, CyberPanel Databases: MySQL, MariaDB, PostgreSQL Mail: SendGrid, Postal Mail Server, SMTP configuration DNS/CDN: Cloudflare, Route 53, DNS management Security: ModSecurity, Cloudflare WAF, Sophos, Fortinet FortiGate RMM Tools: Atera, ConnectWise, Datto, N-able Version Control: Git, GitHub Containers: Docker 💬 COMMUNICATION & AVAILABILITY: - Available for long-term contracts and ongoing maintenance - Fluent in English with strong technical communication skills - Fast response time during business hours (UTC+5:30) - Detailed documentation for all implementations - Proactive monitoring and alerting setup 📈 WHAT CLIENTS SAY: "Sunil resolved our critical server issues in under 2 hours and implemented monitoring to prevent future incidents. His expertise saved our business during peak traffic season." 🤝 LET'S WORK TOGETHER: Whether you need server optimization, cloud migration, WordPress infrastructure, or ongoing Linux administration, I bring technical expertise and business focus to deliver results. Message me with your project requirements, and I'll provide a detailed plan within 24 hours.

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.