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I'm Nevin Davis, I have a degree and diploma in Computer Science and Engineering. I'm a redhat certified engineer with 8 years of experience as a server administrator. My strengths and skills are:- * Well knowledge in AWS, Google Cloud, Azure... etc * Sound knowledge in Linux/Unix like operating system. * Deep knowledge in cPanel/WHM. * Familiarize with Plesk, Interworx, Website Panel, Webmin, Directadmin, CyberPanel, HestiaCP. * Automated installation of Red Hat Enterprise Linux. * Network configuration and troubleshooting. * Server hardening. * Managing partitions and file systems. * Managing flexible storage with LVM. * User Management & Administration. * Managing selinux. * Basic creation and troubleshooting on scripting like Shell/Perl. * Installing and managing softwares. * Managing installed services. * Kernel re-configuration & parameter tuning. * Installation of patches and packages. * File sharing with FTP. * NFS configuration & administration. * Job Scheduling and Automating process using CRON. * XEN, OpenVZ virtualization. * RAID * Idera Back up server management. * Familiarize web servers- Apache, Litespeed, Nginx. * Deep knowledge in SolusVM. * Migration. * SSL Cert generation, installation. * IPMI, KVM console management. * Billing Module Management(whmcs,vision,osticket) * VPS, Shared and Dedicated server Management * Monitoring (Nagios) & troubleshooting with performance related issues. * Installation of Antivirus and Troubleshooting with virus related issues.

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’m a Linux systems administrator with solid industry experience, helping businesses build and maintain stable, secure, and high-performing server environments. I specialize in simplifying infrastructure for small and medium businesses and setting up cost-effective alternatives to expensive cloud services without compromising performance. What I Do: ✓ Setup servers. Optionally install and configure a control panel. ✓ Harden servers for high security and compliance requirements. ✓ Optimize servers for optimal speed and stability. ✓ Setup Web/Database/DNS high availability clusters for auto-replication and redundancy. ✓ Improve email deliverability (SPF/DKIM/DMARC/IP Reputation Management). ✓ Install SSL certificates, configure Firewall, and fail2ban/LFD for brute force protection. ✓ Perform server security audits and hardening, according to industry best practices. ✓ Configure backups (scheduled/real-time). Plan and execute Disaster Recovery. ✓ Plan and perform server migrations. Migrate websites with minimal downtime. ✓ Setup Content Delivery Network (CDN) and Web Application Firewall (WAF). ✓ Mitigate DDoS attacks using NGINX/Apache, fail2ban, CSF and iptables. ✓ Install and configure Apache, NGINX (as a backend or reverse proxy), Varnish cache, Redis, Memcached, and PHP Opcache for optimal performance and high traffic. How I Work: I tailor each setup to the specific client environment and business goals. I focus on clean, efficient architecture and proactive optimization to ensure maximum uptime and predictable costs. Ongoing monitoring and maintenance are available under retainer. Typical Results: • Faster load times and improved reliability through optimized stacks • Reduced monthly infrastructure costs with efficient configurations • Better email reputation and lower spam rates • Hardened, compliant servers resistant to attacks and misuse Technical Expertise: • Operating Systems: CentOS, RHEL (AlmaLinux/Rocky Linux/CloudLinux), Debian, Ubuntu, Linux. • Commercial Control Panels: cPanel/WHM, Plesk, DirectAdmin, InterWorx, ISPmanager. • Free Control Panels: HestiaCP, ISPConfig, CentOS Web Panel, Webmin. • Content Management Systems: WordPress, Drupal, Magento, Joomla. • Server Stacks: Apache, NGINX, PHP-FPM, MySQL, MariaDB. • Email software: Exim, Postfix, Dovecot, SpamAssassin, RBL. • Server Software: JetBackup, rsync, lsyncd, rclone, Linux Malware Detect. • Cloud/Server Security Solutions and CDN: Cloudflare, Sucuri, Imperva, ModSecurity WAF. • Anti-SPAM gateway and software: Scrollout F1, EFA (Email Filter Appliance), MailScanner. • Cloud Services: Amazon Web Services, Microsoft Azure, Digital Ocean, Linode, Vultr, Google Cloud Platform, OVH, Hetzner, Liquid Web, and others. I’m enthusiastic, highly focused, and dedicated to my work. I’m always ready to go above and beyond the call of duty. I know that communication is the key to success; if you have any questions or are ready to begin, please reach out to know how I can help.

I'm a linux sysadmin and have worked in a web hosting company for more than eight years and now doing a full-time sysadmin consulting.  I handle servers from co-locations/data centers to different vps and cloud hosting providers such as Rackspace, Amazon, Linode, DigitalOcean, and Softlayer.  I managed mostly lamp-stack servers on CentOS/RHEL and Debian/Ubuntu and several cPanel/WHM servers for shared hosting clients.  I have designed and deployed mid to large scale highly scalable, fault tolerant, automated and secure IT infrastructures using cutting edge complex technologies such as cloud computing, aws/ec2, NoSQL databases, hadoop, load balancers, chef/puppet configuration management systems, varnish cache, nginx/apache web servers, solr search and indexing, virtualization, LAMP and python frameworks, RoR etc.   Operating Systems: - Servers: RHEL, CentOS, Debian, Ubuntu, openSUSE, solaris Cloud and Hosting Providers: - Manage instances deployed in Rackspace, Amazon, and Linode - Manage dedicated servers in datacenter co-locations and Softlayer Virtualization and Cloud technologies: - Xen: setup, configure, and manage virtual machines running Debian and CentOS -openvz : setup, configure, manage and migrate virtual machines running on CentOS - OpenStack and Eucalyptus: setup, configure, and manage private cloud deployments Hosting Control Panels: - Manage multiple cPanel servers for shared hosting clients and services - Previous experiences include Plesk, zpanel, directadmin, and Webmin control panels DNS: -- Manage DNS cluster on Cpanel DNSOnly versions. Manage zones hosted and integrated with Cpanel servers. - Manage Bind DNS service on dedicated and Cpanel servers (WHM and DNSOnly versions). Manage zones hosted at Softlayer and integrated with Cpanel servers - Managed DNS from different hosting providers (Godaddy, NetworkSolutions, SRSPlus) as well as migrating entire DNS/NameServers between different providers.  Backups: - Cpanel Backups, and different rsync scripts (rsnapshot, rsback, rdiff), remote ftp backup. - Administer backups from cloud providers such as AmazonS3 and Rackspace CloudBackup Version Control Systems: - Git: setup and manage dedicated git hosting server running Gitolite and Gitlab - Github: manage organizations and private repositories. Setup deploy keys and webhooks Alerts and Monitoring: - Configure Nagios/opesview and cacti for servers and services monitoring - Server graphing with NewRelic and Pingdom services. Previous work experience includes Cacti, Graphite, MRTG, and PRTG. Drupal CMS Administration: - Managed Drupal 5,6, and 7 sites on LAMP-stack from different hosting providers - Drupal server and site performance evaluation, tuning, and optimizations - Setup and configure Drupal integration with CiviCRM, ApacheSolr/Tomcat, Memcached, APC, and Varnish - Applies Drupal standard and security updates on different site environments Server Security: - Experienced with setting up PCI Compliant servers. Scanning tools include dedicated Nessus server and third-party scanner like Trustwave and ControlScan - Setup and manage firewall rules with iptables, ufw, configserver firewall (csf), Rackspace RackConnect, AWS SecurityGroups, dedicated firewall devices.  - Rkhunter, Chkrootkits, SSHD, TCP Wrapper, fail2ban.

With over 14+ years immersed in server management, security, and technical support, I bring a wealth of expertise in diverse areas pivotal to seamless server operations and robust security protocols. My proficiency encompasses: 🔒 Server Security & Hardening: Adept in fortifying servers against vulnerabilities, employing advanced security measures, and crafting firewall configurations for robust protection against cyber threats. 🖥️ Linux & Windows Server Administration: Extensive hands-on experience in Linux/Unix and Windows server installation, configuration, and troubleshooting across varied environments - Shared, Dedicated, and VPS (Virtuozzo, Hyper-v). ☁️ Cloud Infrastructure Expertise: Proficient in managing AWS, Google Cloud, and Azure Cloud infrastructure, ensuring optimized performance and seamless operations in cloud-based environments. 🛡️ Application Security & Maintenance: Skilled in ensuring application security, especially in CMS platforms like Joomla, WordPress, Drupal, and Magento, tailoring services to meet client specifications while guaranteeing optimal performance. 🔧 Technical Troubleshooting & Support: Proven track record in critical issue resolution, adept at diagnosing and resolving intricate server, network, and internet connection-related problems efficiently. 🚀 Web Server & Database Configuration: Proficiently install, configure, and maintain Apache, Nginx, Database servers, and DNS servers, adept in handling common web server, email, and scripting issues. My wide-ranging skill set and extensive experience enable me to deliver efficient solutions and unparalleled technical support for projects of all scopes. I'm committed to fortifying server infrastructures, ensuring top-notch security measures, and delivering impeccable technical support. Let's collaborate to fortify your server infrastructure and streamline technical operations for unmatched performance and security.

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.