- Migration of on-prem Hadoop based DataLake into Azure cloud (Synapse, Data Factory) utilizing infrastructure as a code approach (Terraform, Azure DevOps, Ansible) - On-prem Hadoop Platform engineering: Clusters configuration, Maintenance activities, Software upgrades - Hadoop Security: Kerberos, RBAC, TLS, Data at Rest Encryption - On-prem services configuration automation: Ansible, Terraform, Azure DevOps - DataLake Performance analysis and tuning: inefficient jobs/queries, inefficient storage strategies, non-optimal cluster configuration - Batch ELT(ETL) jobs development and orchestration: Spark, Airflow - Monitoring implementation: Telegraf, VictoriaMetrics, Grafana, Splunk - Facilitated adoption of agile methodology in the team

- Hadoop clusters administration activities - Kerberized Hadoop infrastructure deployment and management - Designed infrastructure improvement strategies - Analysis of configuration flaws and working out remediation strategy

In addition to below responsibilities: - Technical leadership - Mentoring

- Administration and troubleshooting of petabytes scale data warehouse built on Hadoop. Planning and supervision of cluster upgrades and new services integration. Setting up development environments. Implementation of fully fault-tolerant infrastructure. - Participation in data platform improvements design. - Performance testing and tuning. Managed configuration of fair cluster resource sharing. Proactive planning of capacity needs. - Configuration management automation using "Infrastructure as a code" approach. - Contribution to ETL pipelines development. - Automation of all sort of activities: cleanup, deploy, monitoring and so on. Key technologies: - Hadoop stack: Zookeeper, HDFS, Mapreduce v1, YARN / Mapreduce v2, Hbase, Hive, Spark, Hue, Oozie, Solr, Impala - Hadoop flavours: Cloudera CDH, Apache Hadoop - Data processing: Pig, Spark, Hive - Sqoop (RDBMS -> Hive) - Build/deploy: Jenkins, Maven, Gradle, Rundeck - Workflow engines: Luigi, Airflow - Artifact storage: Nexus - Configuration management: Chef, Ansible, Cloudera Manager - Scripting: Python/Bash/Groovy/Ruby - Virtualisation: OpenVZ, KVM - Ceph distributed storage - Monitoring: Ganglia, Zabbix, Cloudera Manager, Grafana - Time-series storage: InfluxDB, Elasticsearch - Backups: Bareos(bacula), Backuppc

- Administration of Information Security servers estate (FreeBSD/Windows server 2003,2008) - Implementation of configuration management solution based on CFengine - Integration and management of ISU services One of the key responsibilities was to ensure compliance with information security standards (including PCI DSS): - Regular software updates (including OS) - Centralized log collection, storage and backup service implementation. - Deployment and support of automatic log analysing system - Deployment and support of Intrusion detection system (IDS). - Deployment and support of file integrity monitor services (FIM). - Constant software vulnerability monitoring and management. - Securing internet access. - Information Security policies development. - Configuring new services to comply with information security policies. - Network appliances configuration audit ( Cisco ASA/IOS ). - DLP systems testing and deployment.

As an ISP network engineer I was involved in a variety of network administration activities. Key activities and technologies I got hands on experience with are: - Access and Aggregation level devices administration. - Link aggregation (LACP) - Dynamic routing (OSPF) - Testing and deployment QoS scheme (802.1p, QoS). - Testing and deployment IPTV service (IGMP, ISM vlan, QOS) - Virtual local area networks (VLAN, Q-in-Q, GVRP) - Spanning tree protocol. Troubleshooting, tuning. (STP, RSTP, MSTP) - Traffic filtering and control (ACL, Traffic segmentation, Banwidth control, Port security, IPMPB, DHCP Snooping) - Network infrastructure monitoring (Zabbix, Nagios, mrtg)

- office systems administration

Faculty of Automation and Computer Engineering, Industrial Electronics

Department of Foreign Languages, English. Translator in the field of professional communication