Hire the Best Debian OS Specialists
in Georgia

With 10+ years of experience in Linux, DevOps, cloud, virtualisation, and network security, I deliver reliable, high-performance solutions for modern IT environments. Core Expertise: Linux & Unix Systems: Debian based , RHEL, macOS, Solaris , OpenBSD Networking & Cisco: Routing & switching (BGP, OSPF, EIGRP, MPLS), QoS, HSRP/VRRP/GLBP; CCNA-certified; modern firewall architecture. Security: Network and cloud protection, encryption, VPNs, Zero Trust frameworks, system hardening, compliance, vulnerability management, and security automation (SIEM & SOAR), pentest. Cloud & DevOps: AWS, Kubernetes, Docker, Terraform, Ansible, Puppet, Jenkins, GitHub Actions, Gitlab pipelines Virtualization & Containers: VMware ESXi, KVM, Proxmox, Docker, LXC/LXD Monitoring & Observability: Prometheus, Grafana, Zabbix, ELK stack Web & Load Balancing: Nginx, HAProxy, Varnish, Cloud Load Balancers (AWS ALB/NLB, GCP Load Balancers) Databases: MySQL, PostgreSQL, MongoDB, Elasticsearch Version Control & Collaboration: Git, GitHub, GitLab, Bitbucket

Linux server breaks at 3am? Emails going to spam? I fix Linux servers fast and find the root cause so it doesn't come back. Postfix, DKIM/SPF/DMARC, Nginx, VMware/Veeam, DNS — 6+ years, LPIC-2 certified. Top Rated on Upwork. Specializing in Linux system administration and Linux server administration across all major distributions. What I work on: Linux Administration — Ubuntu, Debian, CentOS, AlmaLinux, Rocky Linux, RHEL — Server hardening, firewall (iptables/UFW/fail2ban), SSH lockdown, SELinux — LVM storage management, disk partitioning, filesystem tuning — Bash scripting, cron automation, system monitoring Mail Server & Email Deliverability — Postfix, Dovecot, Mailcow, Docker-based mail stacks — DKIM, SPF, DMARC configuration and troubleshooting — Email delivery to Gmail/Outlook, blacklist removal, spam reputation fixes — DNS records: MX, A, PTR, TXT — full mail infrastructure setup DNS & Network Infrastructure — BIND, Cloudflare, cPanel/WHM DNS management — Zone file configuration, propagation troubleshooting — Reverse DNS, domain migrations, SSL/TLS (Let's Encrypt, Certbot) VMware & Backup — VMware ESXi, vSphere administration — Veeam Backup & Replication — backup jobs, restore, DR planning — Proxmox VE, VM provisioning and migration Web Server & Database — Nginx, Apache — virtual hosts, reverse proxy, SSL termination — MySQL, MariaDB — installation, tuning, user management — Docker, Docker Compose — containerized service deployment Recent Upwork results: ✓ DNS zero-downtime A record migration — verified globally — 5★ ✓ MailCow setup diagnosis and fix — Postfix/email deliverability ✓ Docker-based open-source mail server setup from backup — 5★ ✓ VPS mail server DKIM/SPF/DMARC for Gmail delivery — 5★ ✓ Postfix + Rspamd email filtering and forwarding rules on Ubuntu VPS — 5★ ✓ Migrated multiple websites to Cloudflare Pages across GoDaddy/Hostinger/GitHub ✓ Kamailio custom build — SaaS API to PBX middleware integration ✓ Custom middleware — SaaS API to WebResponder VoIP integration — 5★ ✓ "Giorgi is that guy that finds a solution to your problem" — client review ✓ "Giorgi is a very talented developer with deep insights into VoIP telephony" — client review Available for one-time fixes, full server setups, and ongoing maintenance contracts. Send me your setup details and I'll respond within a few hours.

I help businesses and IT teams build stable and cost effective systems. I have more than 14 years of experience in a major security company, working with projects of different sizes, from small offices to large distributed environments. My main areas of work: • Windows Server infrastructure: AD, DNS, GPO, RDS, Hyper-V, Failover Clustering • Networking: MikroTik, UniFi, VPN setups (site to site and remote access) • Virtualization: Hyper-V, VMware (ESXi, vSAN), Proxmox VE & PBS • Backup and storage: Veeam, Synology, QNAP, DAS/NAS systems • Remote management infrastructure: RustDesk, VNC, NanoKVM • Cloudflare Tunnels • Drake Tax software support I focus on practical solutions that meet business needs and stay in the budget. Whether you need a new setup or help maintaining an existing one, I try to make things reliable and simple to manage. Certifications: MCSE | MCSA | AZ-104 Open for long term remote roles or hybrid setups.

Linux System Administrator with rich experience in infrastructure management. Learning and working on solutions with Cloud Computing (AWS,GCP,Azure,DO) Platform,etc.) Here with experience to solve and help in many kind of problems on System and Network side. System Administration: - RHEL Based Linux Servers - Debian Based Linux Servers - MS Based Servers (Microsoft Windows Server, AD, DNS, DHCP) Backup: - Veeam Network: - Cisco Routing&Switching - Mikrotik Routers&; Switches, Wifi - Unifi Routers&;Switches,Wifi Database: - MySQL - MSSQL - PostgreSQL Other: - cloud AWS,GCP,Azure,DO and on-prem deployments - virtualization with VMWare, KVM, Proxmox - Expertise in migrating Domain and DNS from various registrars - Bind, TinyDNS Server Configuration - monitoring systems (Nagios, PRTG, Zabbix, Prometheus) - automated backups - automated data/log rotation - load balancers - ELK, Kibana

If you need reliable and experienced system administrator, you have found him! With 10 Years of experience working in system administration field I bring extensive experience and knowledge to the table. I've proved myself to be a trustworthy and reliable System Administrator and have worked for number of companies that are specified in different fields: Oil Companies, Financial and Banking Systems and other. Currently I am working as a Senior System Administrator in ISP and a Banking Systems Company simultaneously. My extensive experience includes knowledge of designing, implementing and administering small and large scale windows server infrastructure including services such as: Active Directory, Exchange, File Servers, Terminal Server Infrastructure, DHCP, DNS, PKI Infrastructure, IIS Web Hostings and etc. On Unix side I also have huge experience with implementing and administering services like: DNS, DHCP, NGNIX, Docker, Zabbix, Web Hosting Services including jboss, wildfly and other. I also have extensive experience with server hardware including HP, DELL, Huawei dedicated and blade servers, storage hardware including Dell Unity, PowerStore, DataDomain, HP Primera, 3Par, StoreOnce. I am ready and available to provide 24 hour support for your systems. You will receive quick help with troubleshooting, fixing system errors and problems, implementing new services and consulting with you software and hardware infrastructure. I am always available to consult and advice on you working process and systems performance improvement and implementation plan. Services I Provide: - Troubleshooting server hardware and software level issues - Server hardware and software analysis and performance improvement - Linux/Windows server management - Exchange server initial installation, upgrade, migration, troubleshooting - Certificate generation and replacement for services - Web server implementation and management - System Administration and Configuration - Backup system implementation, configuration and administration - System automation with PowerShell - Various software installation and configuration - On-Premise to Cloud migration - Cloud to Cloud migration - Azure Domain and Exchange administration and configuration - Monitoring systems implementation and configuration (Grafana, Prometheus, Zabbix, PRTG, Nagios) - Manage engine products implementation, configuration - DNS records setup for your mail servers (SFP, DMARC, DKIM) - DNS on-premise and cloud services - Virtualization implementation, upgrade, migration and configuration with Hyper-V and vSphere - SAN Switch configuration - Storage systems implementation - Server and Storage hardware maintenance, firmware update and troubleshooting - Setting up RAIDs, ESXi, vCenter, Hyper-V, Storage Networking - Systems Security hardening - Compliance planning and management

I am an experienced Linux System Administrator (Ubuntu, Debian, CentOS, RHEL etc...) FreeBSD Unix. I have a very strong experience of running and maintaining vSphere (ESXi, Vcenter) and also KVM, OpenVZ, Xen and other virtualization solutions I am a intermediate graphics designer and have a good skills in Adobe Photoshop, Illustrator, AfterEffects