Hello there! I'm experienced Linux and DevOps Specialist with a strong background as a Linux System Administrator 🧑💻. I’m working for 5 years in the hosting industry, configuring server infrastructure, helping clients manage servers, troubleshoot issues, and keep their websites running smoothly.
If you're looking to set up, migrate, secure, or fix your web infrastructure - I'm ready to jump in and help 🚀
🛠️ My technical skills include:
- 🐧 Linux systems (CentOS, Ubuntu, Debian, AlmaLinux)
- 🐳 Containers: Docker & Podman
- 🔄 Backup & Recovery
- 🧾 Certified cPanel/WHM Administrator - full control over account management, backups, server tuning, and issue resolution
- 🔧 Version control with Git - collaborative and safe development workflows
- 🔐 SSH & FTP configuration
- 🛜 Troubleshooting & Logs
- 🌐 Networking (iptables, nftables)
- 🕒 Cron job management
- 📜 Bash scripting
- 🌍 DNS setup and troubleshooting
- 🔄 Website & email migrations
- 📧 Mail server configuration (Exim, Postfix, etc.)
- 🧩 Web server management (Apache, Nginx, CloudLinux)
✅ Why work with me?
✅ You'll get administrator-level expertise
✅ I provide clear, human answers to tech questions
✅ Available for ongoing support & consultations
✅ I don’t just assist — I dig deep and solve problems 🤓
Let’s make your infrastructure fast, secure, and worry-free =)
Linux
Docker
Docker Compose
CentOS
DevOps
Customer Service
Bash
cPanel
WordPress
NGINX
SMTP
DNS
Email
Website Migration
Domain Name
Andrey B.
Dnipro, Ukraine
$55/hr
4.7
7 jobs
Hi all,
I'm an experienced Dev Ops engineer with 8+ years of experience and 12+ years in Linux/Unix administration.
Brief summary:
- Python, Go scripting and programming - 3+ years
- High-load testing, performance tuning (Apache, Nginx, fpm) & DB optimization
- Knowledge of CVS systems, including svn, git (GitHub, GitLab, Bitbucket, AWS code commit)
- Excellent knowledge of virtualization, including cloud providers: Amazon AWS (ECS, S3, Route 53, Load balancer, Cloudformation: VPC и AIM policy, AMI gateway), GCP, Digital Ocean
- Docker(Swarm, Compose), Kubernetes(k8s, Kubernetes Dashboard Rancher), Git,
- CI/CD (Jenkins, GitLab CI, CircleCI), Ansible, Terraform
- Monitoring system: Zabbix, Grafana, Prometheus
- DB Administration: MySQL, Percona, MariaDB, Redis, Memcached, etc.
If you are looking for a reliable, creative and experienced IT professional, you have come to the right place - I will eagerly become your longtime partner. Let's start to work together!
Amazon Web Services
Terraform
Docker
Ansible
Jenkins
Google Cloud Platform
Kubernetes
Python Script
Linux System Administration
DevOps
Andrii K.
Dnipro, Ukraine
$70/hr
4.9
127 jobs
I focus on building reliable systems and enjoy digging into complex issues — performance tuning, disaster recovery, root cause analysis, and solving problems that aren't always straightforward.
With 20+ years in system administration and infrastructure engineering, I work with both legacy systems and modern environments — from bare metal servers to virtualized and containerized setups.
🚀 Key areas I work with:
• Infrastructure setup and migrations (bare metal ↔ VM ↔ cloud)
• Troubleshooting and performance tuning (high CPU/load, slow systems, bottlenecks)
• Email deliverability (SPF, DKIM, DMARC, spam issues, warmup, mail server reputation restoration)
• Virtualization and containerization (VMware, Proxmox, KVM, Docker)
• Networking and VPN solutions
• Disaster recovery, backup strategies, malware cleaning, and finding the point of intrusion.
• Long-term systems support and maintenance
🛠 Legacy Systems & Industrial Equipment Support
• Migration and virtualization of legacy systems (DOS, Windows 3.x/9x/NT/2000)
• Running outdated software on modern hardware via virtualization
• Recovery systems from old working HDD to VM, if native hardware fails. Including industrial PCs.
🔧 Core Expertise
• OS: FreeBSD, Linux (CentOS, AlmaLinux, Rocky, RHEL, Ubuntu, Debian, Gentoo), Windows, Windows Server
• Virtualization: VMware vSphere, ESXi, Proxmox, KVM, oVirt, VMware Workstation, VirtualBox
• Containers & Automation: Docker, Docker Compose, Jenkins, Ansible
• Web: Nginx, Apache, LiteSpeed, Tomcat, Lighttpd, Caddy
• Databases: MySQL, MariaDB, PostgreSQL, MongoDB
• Mail systems: Postfix, Dovecot, Courier Cyrus, Rspamd, Postgrey, PostfixAdmin, SquirrelMail, Roundcube, SPF, DKIM, DMARC, MTA-STS, AWS SES, Mailgun, Sendy
• Control panels: WHM/cPanel, VestaCP, Virtualmin, Cyberpanel, and so on
🔐 Networking & VPN
• WireGuard, AmneziaWG, OpenVPN, StrongSwan, tinc, mpd5, IPSec, L2TP, IKEv2
• BGP (quagga), Squid (including LDAP and Kerberos auth), DNS (BIND), DHCP, TFTP
• Fail2ban, iptables, ipfw, pf, csf
💾 Storage & Backup
• TrueNAS Core/Scale, FreeNAS, SAN (iSCSI), ZFS, AWS S3, Backblaze, Wasabi
• Veeam Backup & Replication, XSI Backup, rsync, rsnapshot, rclone
⚙️ Other
• Samba3 + LDAP, Samba4 (NT4 and AD domains analog, LDAP, domains up to 500 users, GPO, roaming profiles)
• Monitoring: Zabbix, Prometheus, Grafana
• Services: Memcache, Redis, OpenLDAP, NFS, SVN, Git, GitLab (self-hosted), FTP, SFTP
• Platforms: Moodle, Nextcloud, OnlyOffice, BigBlueButton, DAViCal, WordPress, Magento
• Remote management: AnyDesk, TeamViewer, Radmin, Ammyy Admin, RustDesk, MeshCentral
• Hardware: Dell, HP, Supermicro servers, Dell PowerVault storages
• Networking equipment: HP, Dell, 3Com switches
• Embedded/firmware: DD-WRT, OpenWRT (including software cross-compiling for ARM on x86_64)
• Scripting: Shell scripting, Python, PHP
Have an interesting or unusual problem? That's exactly what I enjoy — feel free to reach out.
I value long-term collaboration and quality over quick fixes.
Ubuntu
Linux
CentOS
NGINX
DNS
Postfix SMTP Server
PostgreSQL
MySQL
Windows Administration
FreeBSD
Linux System Administration
Dovecot
LDAP
Virtualization
VMWare
Proxmox VE
VPN
Performance Optimization
Backup & Migration
Troubleshooting
Mykhailo H.
Dnipro, Ukraine
$20/hr
5.0
16 jobs
Services
🔧 Website & Application Migration
* Website migration with zero or minimal downtime
* CMS migration: WordPress, Joomla, OpenCart, Drupal, Bitrix
* Fixing websites after failed or broken migrations
* Domain, DNS, email migration
🚀 Server Setup & Administration
* VPS / VDS server setup and administration
* Nginx, Apache, PHP, MySQL, SSH
* Server optimization and tuning
* Error fixing (502 / 504 / 500, database issues)
☁️ Cloud & Hosting Platforms
* Hetzner
* DigitalOcean
* AWS (EC2)
🧩 Laravel Deployment
* Laravel application deployment on VPS / cloud
* Environment configuration
* Queue, cron, storage, permissions setup
📧 Mail Server Setup & Administration
* Postfix, Exim, Dovecot
* PostfixAdmin
* Webmail panels: SquirrelMail, Roundcube
* DNS / SPF / DKIM / DMARC configuration
* Troubleshooting delivery issues
🔐 Security & Stability
* Malware and virus removal (websites & servers)
* Server hardening (firewall, fail2ban)
* Cloudflare setup & optimization
* SSL certificates installation
* HTTPS migration
* Backups configuration
🛠 Control Panels
* HestiaCP, ISPmanager, cPanel, VestaCP, BrainyCP,
* FastPanel, CyberPanel and others
🔹 Why clients choose me
✔ 17+ years of real production experience
✔ Careful migration without data loss
✔ Clear communication and fast response
✔ Focus on stability, security, and result
✔ Cloudflare expertise for protection and speed
✔ Full mail server setup & troubleshooting
✔ Available for ongoing server support
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