Responsibilities:
- actively participated in the migration of the product to GCP;
- Maintaining, solving and investigation faults or slow down application work on production side;
- Operations activities related to main company product in production environment, providing 24x7 on-call support;
- DB mysql: Install, backup, restore, upgrade, replication configuration;
- Automatization of services configuration using ansible, puppet and shell scripting;
- Operations activities of various internal services in staging environments based on Solaris/Linux;

- Installing new test environments for Developer and QA team.

Technologies:
Solaris 11, CentOS, Ubuntu, Java, Tomcat, Mysql, PostgreSQL, Oracle DB, MongoDB, Clickhouse, Redis, Kafka, Zookeeper, Nagios, Collectd, Grafana, Ansible, Puppet, Git, GitLab CI, docker, Shell, HAproxy, Nginx, Bind, ActiveMQ, AWS, GCP

Ukrainian hosting company which provides services:

private hosting, vps and dedicated servers for customers.

Responsibility for the condition and performance of the main data center systems:

-- Power supply

-- Microclimate

-- Fire System

-- Security system

-- Other systems which work in DataCenter

Additional responsibilities:

-- Solving tasks for high architecture systems on 24/7.

-- Modernization and clustering of email farm with load-balancing: exim, haproxy, nginx, mariadb (galera).

-- Improvement of spam filtering.

-- Installation and support of virtualization server which is based on KVM systems

-- Installation, using, supporting of storage system based on Ceph, GlusterFS.

-- Work with different operating systems (Unix, Linux, Windows).

-- Automatization of installation process of services and servers.

-- Writing automation scripts on bash.

-- Troubleshooting, consulting technical staff in a DataCenter.

-- Technical support of company clients. TechnologiesProxmox, Exim, Dovecot, Ceph, GlusterFS, Zabbix, Mysql, web servers, ipfw, iptables, docker, LXC ...