I am an energetic and self-confident DevOps Engineer / Linux System Administrator/ Cloud Engineer with 15+ years of hands-on professional experience in cloud platforms, system administration, and web hosting solutions. I enjoy the DevOps process, love solving complex infrastructure problems, and am always ready to take on new challenges while achieving both client and personal goals. What can I do? Server & OS Management: * Installation and configuration of servers: MySQL, Apache, LAMP, WordPress, Samba, NFS Ubuntu OS customization as per organizational requirements * Linux system administration (Ubuntu, CentOS, Red Hat, Fedora) * Backup, restore, and disaster recovery in case of server crashes * Disk space analysis and resolution Web Hosting & Performance Optimization: * Web hosting and optimization for WordPress, WordPress Multisite, Apache, Nginx, Java-based sites * WHM & cPanel administration and performance tuning * Nginx, Apache, LiteSpeed configuration and hosting Website and server speed optimization: * SSL installation and setup (Let’s Encrypt & paid SSL certificates) * Stop spamming and secure compromised servers * Website, email, DNS, and domain migration Cloud & DevOps Solutions: * Cloud platforms: AWS, Google Cloud, Azure, DigitalOcean * EC2 instance setup and management * AWS EBS configuration * AWS networking, security, and firewall design * Load Balancers and Auto Scaling * Storage services: S3, AWS Backup * Database services: Amazon RDS * Designing secure, scalable AWS environments and recommending best-fit solutions * Migrating on-prem or existing servers to AWS Virtualization & Windows Administration: * VMware vSphere administration (vCenter / ESXi) * Windows system administration (Active Directory, DNS, DHCP) * KVM Deployment and management * HyperV Deployment and management Hosting Providers & Tools *Management of hosting platforms like GoDaddy, HostGator, SiteGround, Cloudflare, and more Research & Innovation: * Continuous R&D, testing new tools, and improving infrastructure reliability Certifications: * Microsoft Certified Technology Specialist (MCTS) * Microsoft Certified Professional (MCP) * Red Hat Certified System Administrator (RHCSA) * Red Hat Certified Engineer (RHCE) * Oracle Cloud Infrastructure 2025 Multicloud Architect Professional * Oracle Cloud Infrastructure 2025 DevOps Professional * Oracle Cloud Infrastructure 2025 Architect Associate * Oracle Cloud Infrastructure 2025 Foundations Associate

I started to work as linux administrator since 2012, for my own purposes. I have experience with: Debian - since 2011 Apache(nginx)+MySQL+phpMyAdmin - since 2013 BASH - since 2013 OVH/SoYouStart services - since 2015 MySQL Cluster - since 2016 AWS - since 2019

My name is K.B Asare and i have nearly 10 years experience in the IT industry. In the past 8 years I narrowed that experience and expertise to cover many aspects of enterprise networking. I have in the past 6 years have primarily worked in the administration and management of Linux, Redhat/ Centos 7 servers, as well as Windows systems administration. I have industry certifications in Network+ and Security +. This solid foundation has allowed me to be able to manage, troubleshoot, configure and secure many aspects of a company's physical and virtual networks. Furthermore, I have administered Linux/Windows servers physically and virtually either in the cloud, as in the case of AWS/Azure or virtually using VMWARE. I have build servers from scratch in a physical or virtual environment and in some cases using a PXE server. At the browser or using Putty, I can also do basic management, troubleshooting and configuration of different brands of routers and switches including some Cisco. In summary, in an environment where a company has either 50 or 1500 Linux/Windows servers both physically or virtually, i can administer those systems as well as setup manage and troubleshoot network components like routers and switches to maximize productivity and minimize downtime for the company/team. Having worked closely with the DevOps team in my current environment, I have utilized automation tools like Ansible and puppet. I helped the team build docker containers and loaded images, as well as Kubernetes nodes. Aside from my technical know-how, i work well in a team setting, require very little supervision and take initiatives where needed. I am a fast learner with a tireless work ethic. If there is an issue or subject matter i am not familiar with, you can rest assured that i will endeavor to acquire the knowledge i need to make a positive impact for the company or team to assist in their Linux administration and networking needs. Thank you.

More than 15+ year previous experience in Linux/Sysadmin/Hosting Design of High Availability/High-Performance services and architectures Ability to work flexible hours My primary experience (daily tasks) Server Setup/Migration/Transfer, Server Configuration, Server Optimization, Server Troubleshooting, Domain Registration, Domain Transfer, Domain Nameservers, Domain DNS Website Transfer, Website Migration SSL Install, SSL Renew, SSL Certificate Signing Request (CSR), SSL Let's Encrypt & Certbot Mail Transfer/Migration, Mail Delivery (SPF/DKIM/DMARC) Solid working knowledge of RPM/DEB based Linux Distributions: RHEL, CentOS, AlmaLinux, Rocky Linux, Oracle Linux, Fedora, Debian, Ubuntu, ArchLinux Experience with AWS EC2, AWS Lightsail, AWS RDS, AWS ROUTE53, AWS S3 Experience with RackSpace, DigitalOcean, Singlehop, Hetzner Dedicated, Hetzner Cloud, OVH, Godaddy Experience with Shared Hosting : JustHost, BlueHost, Hostgator, Godaddy, a2hosting, fatcow Experience with Control Panels: cPanel & WHM, Plesk, DirectAdmin, Virtualmin/Webmin, CWP (Control Web Panel) Software: Apache, Nginx, PHP-FPM, BIND, DHCP, Dovecot, Exim, Postfix, MySQL, iptables, ufw, CSF

Hello! 👋 I am a seasoned Linux System Administrator and Engineer with over three years of experience, specializing in virtualization, containerization, and server optimization. As a Red Hat Certified Professional with certifications like RHCSA, RHCE, and various Red Hat specializations, I have a proven track record of managing data centers and executing automation solutions effectively. My core expertise extends to optimizing server performance and ensuring high availability in complex environments. Technical Proficiencies: • Virtualization and Cloud Technologies: VMware, KVM, Proxmox, OpenStack, Nutanix • Containerization: Docker, Podman • Server Management: Zimbra, Bind DNS, Apache, Nginx, OpenVPN, VSFTPD, HAProxy, Mattermost, Rocket Chat • Automation and CI/CD: Ansible, Jenkins • Monitoring and Logging: Zabbix, PRTG, Nagios, Grafana, Prometheus • Storage Solutions: NFS, iSCSI, OpenMediaVault • Version Control Systems: Git, GitHub, GitLab • Database Management: MySQL, PostgreSQL, MariaDB • Scripting and Programming: Bash, Python Professional Certifications: • Red Hat Certified Engineer (RHCE) • Red Hat Certified System Administrator (RHCSA) • Red Hat Certified Specialist in Containers • Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting • Red Hat Certified Specialist in Services Management, and Automation I am passionate about technology and continually strive to enhance my skills and knowledge. Thank you for considering my profile. I look forward to contributing to your projects with my expertise. Have a great day!

I am a Linux systems administrator with nine years of experience working with open-source solutions. My skills: - Multi-Cloud Architecture: AWS, GCP, Digital Ocean, Vultr, Hetzner - Automated Deployment: Ansible, Bash - Software ERP/CRM/CMS: WordPress, Laravel, Joomla - Linux Systems Administration: RedHat, Debian, Ubuntu - Database Management: MySQL, MariaDB - Mail Servers: Exim, Postfix, Dovecot, Spamassassin, Roundcube - Web Servers: Apache, Nginx, Varnish, Memcached, Php-fpm - Hosting panels: cPanel, WHM, Plesk, Webmin, VestaCP, ISPManager - Monitoring: Zabbix, Cacti, Nagios - Networking: Ip tools, Iptables, Openvpn - DNS tools, CDN and WAAP: Cloudflare, Akamai I am looking forward to working with you.

I am a Linux system administrator with 6+ years of experience specializing in captive portal systems (Coovachilli) on WiFi Guest Networks , particularly using FreeRADIUS for managing user access on wireless and wired networks for major Vendors such as TPLink, Unifi Ubiquity, and OpenWRT. I build robust, scalable solutions for bandwidth management, data caps, and session control. Am a certified FullStack Developer with Backend Specialization. My technical stack includes: 🔧 FreeRADIUS, CoovaChilli,OpenWisp, DD-WRT/OpenWRT/Omada Controller/ Unifi Cloud Controller Captive Portal Setup Specialist 📡 TPLink Omada Controller - Advanced Data Backup and Restoration 🐘 PHP — Backend APIs, portals, and admin dashboards 🐍 Python — Enterprise applications and automation scripts 💾 MySQL/MariaDB, PostgreSQL 🔐 Security hardening and performance optimization on Ubuntu/Debian servers I hold a Software Development Certification in Backend Full-Stack Development, and I deliver projects that are clean, documented, and production-ready. Why choose me? ✅ Top Rated – Top 10% on Upwork 📈 Proven results and client satisfaction 🤝 Professional, transparent communication 🔍 Deep understanding of backend systems and network access control Let’s collaborate and build something that works — securely and at scale.

Is your website, email, or VPS down or slow? As a Linux Server Administrator with 10+ years managing cPanel, AWS, and VPS infrastructure, I fix and secure servers fast so your business stays online without downtime. I focus exclusively on server-side infrastructure, not web design or app development, which means I troubleshoot root causes fast: misconfigured Apache/Nginx, mail delivery failures, database bottlenecks, and security gaps that generic developers miss. Clients come to me for the fix, not the theory. Here's what I handle for clients: - Server setup & hardening on Ubuntu, CentOS, Debian with cPanel/WHM, Webmin, or Virtualmin - AWS infrastructure: EC2, RDS, Lightsail, Elastic Beanstalk, DynamoDB, VPC - Web server performance tuning: Apache, Nginx, PHP-FPM - MySQL/MariaDB administration, monitoring, and backup strategy - Email server setup and deliverability fixes: Postfix, SMTP/IMAP/POP3 - DNS (BIND), SSL/HTTPS, FTP/SFTP, Docker, Ansible automation, and 24/7 monitoring 123 completed jobs on Upwork, with clients repeatedly returning for urgent fixes like WordPress-on-VPS recovery, AWS SES email delivery setup, and emergency SMTP troubleshooting. Send me a message describing your server issue or project and I'll reply with a clear plan, usually within a few hours.

I'm have experience in these following area for more than 10 years * Linux System Administrator * Web Server: Apache2, Nginx / Setup Letsencrypt SSL * DNS Server : Bind9, PowerDNS, pihole * SMTP Server: Exim4, Postfix * IMAP Server: dovecot * C Programmer * Perl * Shell Script

⭐️ 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.