Hire the Best Debian OS Specialists in Tbilisi, GE

I have more than 20 years of experience in managing Linux servers. Excelent experience with nginx, apache, mysql, php, networking, monitoring (zabbix,munin,nagios,mtrg,grafana,elk etc) Great troubleshooting skills, I dig deep inside the problem and find the root cause. Good experience with asterisk, vmware esxi/vcenter, bind(named), cpanel Won Yandex sysadmin contest in 2011.

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.

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

I work with backend services on Linux servers and help keep them running smoothly. I can help with deploying applications, checking why services don’t start, and investigating issues through logs. I also work with PostgreSQL for basic queries, data fixes, and connection issues. In my current role in a fintech project, I: deploy backend services and verify their startup analyze logs and help identify the causes of errors handle basic database tasks (PostgreSQL) support pre-production and production environments maintain server stability (log cleanup, archiving, basic maintenance) I’m used to working independently, digging into issues, and figuring out what’s going wrong. I also maintain internal documentation and create instructions for different teams, using Markdown and YAML when needed.

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

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