Andrey Semenov Email & Phone Number

- During the period of separation of the service division into a separate structure (video streaming platform, hosting, CDN, DDoS protection) during 3 months separated 2 thousand servers from the structure of the parent organization. of the parent organization. Currently in the area of responsibility: 2.5 thousand servers.- Configured a server cluster of 10 Puppet. Instead of Bare-servers, virtual machines with the possibility of horizontal expansion were put into operation. virtual machines with the possibility of horizontal expansion, which reduced server maintenance costs.- Deployed and supported the librenms billing system.- Configured interconnection of all parts of the service (Puppet, postgres database with replication, Nginx with caching, server for certificate generation, Memcached for storing operational data).- Implemented the migration of the entire infrastructure from the DNS zone of the parent organization to a new structure under conditions of restricted access to the parent company's network.- Integrated the backup system, calculated the load and data volume (transmission and storage). - Stack: Puppet, unbound, nginx, memcached, consul, vault, ruby, zeromq, postgres, bash, gitea, mysql, foreman, gocd, borg

Moscow

Responsibilities:* Administration of the popular site http://7days.ru (400k + hits per day)* Maintenance of the internal infrastructure of the site services* 24x7 monitoring of servers and services* Rapid response to system failures, as well as early warning of possible disruptions in the operation of the site* Work to improve the quality of services, keeping them up-to-date* Introduction of new technologies to improve business processes* Qualified help and advice to ensure the comfortable work of developersTechnologies:* lxc, vagrant* linux, FreeBSD* puppet, saltstack* bacula, ninjabackup* zabbix, icinga, grafana* ldap, redmine* nginx, apache, fpm, haproxy, mysql

Сопровождение высоконагруженных систем, в частности администрирование стека LAMP (front-end nginx), мониторинг, балансировка, системы резервного копирования, сопровождение офисной LAN.