Urent is Russian IT kicksharing company .Technology stack - linux, mongodb, kubernetus, terraform, clickhouse, elasticsearch, redis, rabbitmq, Kafka, Yandex Cloud

CityMobil is Russian IT company that connects customers with transportation(Taxi).* improved uptime* scaled up the system to keep up with 10x business growing- mysql, proxysql, orchestrator, clickhouse, redis, redis-cluster, tarantool, kafka, juniper

Mamba is the most popular dating website in Eastern Europe.I work for Mamba as the head of the team of engineers created by myself.• Manage a team of 4 talented engineers.• Administration of 320 servers on platform Linux (MySQL sharding cluster over 70 servers, MySQL replications servers, Storage servers, openvz(more than 150), docker, gitlab, elasticsearch, newrelic, nginx, php-fpm, ansible, memcached, NoSQL tarantool).• Administration of cisco network equipments (catalyst 6504e, 3750)• Mysql query optimization• IPVS Advanced Layer-4 Balancing (over 1 mln pps)• The purchase of equipments• Implantation IPv6 in our system• introduction of PI network, instead of IP's ISP (BGP)• Creating of my own CDN network• Bringing all of the company's servers to the same OS• Implementation and testing of replication from the mysql to the nosql (tarantool)• Create enterprise wifi (cisco clean air)• CCNP cisco routing and switching certification

Field of action: Management of the Department of 7 people (video engineer, systems administrator, network engineer) processing of licensed content Working with Internet service providers (contracting, rebates) Monitoring of server hardware Internal statistics Monitoring of server hardwareAchievements: Alteration of the standard advertising engine Openx for the needs of the site Stabilization of the purchased content processing and adding it to the site Creating and maintaining the internal traffic statistics / popularity of the Internet resource

Field of action: Managing the development of multiprotocol messenger QIP2010 Writing test plans for application testing Communication with the most technologically advanced users for detection of difficult/rare bugs in the application Administration database server MySQL / ejabberd developmentAchievements: The stabilization of development/testing process Improvement of the testing/issue process of new product releases, a significant improvement in the quality of public versions of the application. Server infrastructure optimization, reduction of the number of servers through rearrangement of software part

Field of action: Administration of internet project (www.pochta.ru,www.loveplanet.ru). Administration of 140 servers on platform Linux(FreeBSD) – MySQL, apache server, nginx, proftpd, exim. Administration of owner written CFS (cluster file system). Administration of network devices (cisco catalyst, cisco CSS)Achievements: Stabilization of the project loveplanet.ru, immediate 50% growth hits without additional marketing efforts. The introduction of the new core storage engine on pochta.ru Implementation of effective operating standards projects (including the automatic monitoring and regulation of the reaction to typical problems) Optimization of server infrastructure maintaining the growth of projects without purchasing additional hardware