Raman Kozin Email & Phone Number

Vilnius, Lt

Lithuania, Vilnius

Main stack:- Nginx- MySQL- Postgresql- Redis- RabbitMQ- Docker- Kubernetes- Ansible- Terraform- ArgoCD- Teamcity- SonarQube- Zabbix- Prometheus- Grafana- .Net core- WireguardMain responsibilities: - maintaining and support servers and services for company product. - setup and deployment infrastructure of company (staging and productionenvironments). - automation setup and deployment servers and application (ansible, terraform, k8smanifests and helm charts) - response and solved incidents on the production services and investigation causes ofincidents and elimination it. - development of solutions at the infrastructure level to ensure the operation ofapplications under high load, with high fault tolerance.

Lithuania, Vilnius

Main stack:- Nginx- LEMP стэк (nginx\php-fpm\mysql)- MySQL- Postgresql- Redis- RabbitMQ- Python- Jenkins- Zabbix- Prometheus- Docker- Fabric- puppetMain responsibilities:- maintaining and support web services for World of Tanks game.- deployment web applications for World of Tanks game (staging and production).- automation setup and deployment servers and application (puppet, fabric)- response and solved incidents on the production web services for World of Tanks game and investigation causes of incidents and elimination it.- development of solutions at the infrastructure level to ensure the operation of applications under high load, with high fault tolerance.

Minsk

Maintenance current infrastructure on AWS and VMWare ESXi.Main stack:- Asterisk (FreePBX) Installing and configuration, dial plan configuration and solved issues.- MySQL - MongoDB- LAMP стэк (nginx\apache\php\php-fpm\mysql)- Apache Tomcat- Glasfish- Jenkns- Zabbix- Graphana- Docker- Backups and restore - VPN (OpenVPN, IPSec)Deploy and configurations new staging and productions servers and applications.Consultations and support product developers company. Configuration and maintenance monitoring system.Timely response to messages from the monitoring system, investigation and solved of incidents.Configurations server and infrastructure for VoIP, setting up dial plans and maintenance.

Minsk

Main stack:- Windows Server 2003/2008R2/2012R2- AD- GPO- DNS- DFS- IIS- Terminal servers- MSSQL- Zabbix- CloudStackMain responsibilities: - Timely response to requests from key customers of the company received by phoneand e-mail - Solving online 24\7 problems and incidents that arise on the side of the supportedcustomer infrastructure - Responding of messages from the monitoring system for supported services on theclient side infrastructure, monitoring the client infrastructure - Designing cloud infrastructure according to customer needs - Preparation, planning and migration of enterprises to CloudStack cloud infrastructure - Deployment and administration of Windows Server 2003/2008R2/2012R2 : AD, GPO,DNS, DFS, IIS, Terminal servers, etc - Configure Data backup systems - Installing and configuring MSSQL, setting up database backups - Setting up and maintaining the Zabbix monitoring system.

Minsk

System administrator of second line client support (Helpdesk L2).Main stack:- Linuix- Apache Web server- Nginx- MySQL- Exim- Postfix- Icinga- Zabbix- Apache CloudStack- OpenVZ- DNS- LVM Main responsibilities: - consultations of clients about the company's services and products;- clients technical support;- administration of the company’s technical solutions (Shared/Cloud Hosting, Mail Servers);- billing;- handling messages and incidents from monitoring systems (Zabbix, Icinga);- resolving incidents;- administration of web-hosts, mail servers and clients virtual servers;- installation and configuration Apache, Nginx, MySQL, PHP, Exim;- costumer's documentation support.

Orsha, Belarus

Main stack:- Linux- KVM (Kernel Virtual Machine)- Proxmox- Windows 2003/2008R2- Active Directory- GPO- Terminal Server- DNS- Apache Web Server- Nginx- MySQL- PHP- Bitrix + bitrixenv- Asterisk (Elastix)- NagiosMain responsibilities: - Maintenance of the online store of the CMS OpenCart company, changing and developthe functionality of the site (module development). - Setting up and administering CRM based on CP Bitrix 24 Boxed version. - Design, configuration and maintenance of IP telephony (Asterisk\Elastix). Setting upVoIP equipment Grandstream, Yeastar NeoGate. - Setting up and maintaining the Proxmox virtualization system (KVM). - Setting up and maintaining company virtual servers under the control of KVM Proxmox(Windows 2008R2 TerminalServer, Linux, Elastix, Routing, Squid, BitrixENV, LAMP,Nagios, VoIP). - Setting up and configure the Nagios monitoring system. - System integration of business processes into the company's infrastructure(integration of ip telephony with BitrixCRM)

Orsha, Belarus

Main stack:- Linux- KVM (Kernel Virtual Machine)- Proxmox- Windows 2003/2008R2- Active Directory- GPO- Terminal Server- DNS- Apache Web Server- MySQL- PHP- DNS- VPNMain responsibilities: - Design, installation and configuration of the LAN - Installation and configuration of network and server equipment, based on servers Lunux\Windows OS (Virtualization based on KVM, Routing, AD, GPO, Terminal Server, DNS). - Maintenance of servers and networks of customer enterprises, technical support for users. - Website development for enterprises and client firms on CMS Drupal. - Installation, configuration and maintenance of mini PBX Maxicom, Panasonic, Samsung. - Design, installation and configuration of video surveillance systems.

Orsha, Belarus

- Assembly of computers.- Setting up and maintaining user computers at the company- Setting up and maintaining servers of the company, based on VirtualBox virtualization system (I studied and dealt with virtualization when it was not yet mainstream), Linux, Windows server 2003, Terminal Server, Routing.- Setting up and maintaining a mini PBX Panasonic.- Warranty, block repair of computers.