Position: DevOps
Category: DevOps
English level: intermediate
Years of experience: 6


Equipment, air conditioning, power supply planning for a blueprint or existing datacenter facilities, with data amounts more than 3 petabytes, machine learning support and long term data storage for longer than 10 years.

More than 2500 containers (swarm) on demo environments for the customer (one month of uninterrupted work, with exception for deployment cases because no reserve was available for demo)

Read/write PostgreSQL throughtput higher than 50 thousand per sec, not counting duplicates
Read/write Kafka/Cassandra throughtput higher than 50 thousand per sec (230 thousands during a test)
Elasticsearch write свыше 50 throughtput higher than 50 thousand per sec
Ansible for all services deployment
Had Hortonworks hdp for some time
Performing load testing for 2 Big-Data government projects (10,000 requests / sec).
Training Linux developers: extending the Jenkins experience, improving approach to writing documentation/making code comments.
Creating a knowledge base for data center engineers to install Nginx, Squid, MS SQL, PostgreSQL, Windows/Linux. 
Setting up and managing monitoring systems for transferring templates (Zabbix): metrics monitoring (Prometheus, Graphite), monitoring of existing equipment (Icinga2), monitoring for displaying metrics and warnings (Grafana).
Exporting the necessary data from the systems: Cassandra, PostgreSQL, Linux, Windows, IIS, JBoss, Apache Tomcat, Aerospike, MongoDB, Oracle DB, MS SQL and graphics visualization (Grafana).
Performing load testing of software in a cluster (cassandra, 110 000 requests/sec.) with increase in data from 256 GB to 4 TB without degrading performance.
Testing cluster performance (3 nodes): MS SQL 2014 (SP2), PostgreSQL 9.5, Oracle DB 12c release 2. 
Performing load testing of software with asynchronous I/O. Advising software developers on Kafka, as a result – the redesigned the application architecture.
не занимаюсь псевдо масштабированием, kubernetes без необходимых мощностей и компетенций у разрабов.