Aleksei Zotov Email & Phone Number

Saratov Region, Russian Federation

Saratov Region, Russian Federation

June 2016 - May 2017* Project for mobile advertiser. Architecturing and building unique tracking system and data processing pipeline in AWS* Project for big e-commerce retailer. Complete re-building inventory system to make it scalable. Making architectural decisions + development team leading* Running internal training programs for BigData engineers within thecompanyNew technologies and tools:* DataStax Enterprise: Solr + Cassandra* Kafka + Spark Streaming* AWS (Lambda, API Gateway, DynamoDB Streams)* Spring BootJune 2015 - May 2016Key responsibilities:* Project for Internet media agency. Migration old batch processing system to in-stream processing.* Leading development team and process. Making architectural decisions* Customer communication and making proposals (including resourcemanagement, building roadmap, milestones planning, processes changes)* Development and management of the training programs for the BigDataengineers within the Grid DynamicsNew technologies and tools:* AWS (Kinesis) + Spark Streaming

Saratov Region, Russian Federation

Oct 2013 - Apr 2014Key responsibilities:* Participation in development of Android library for users tracking* Research of GNIP platform* Research of Priam (Cassandra configuration management in AWS) tool* Studying EC2 and EMR Amazon services* Mentorship of other team members* Active communication with a customer New technologies and tools:* GNIP* Priam* AWS: EC2, EMR* AndroidMay 2014 - Sept 2014Key responsibilities:* Research Lotame platform* Design of architecture of new components* Development of ongoing features* Participation in management activities* Active communication with a customer* Work on presentation for Moscow Cassandra Users meetup (see below in publications)New technologies and tools:* DataStax OpsCenter* Gatling* CQL for Cassandra* Cascading (advanced)Oct 2014 - June 2015Key responsibilities:* Design and implementation of a custom framework for ad hoc reports generation* Architecture design of a new component based on Amazon DynamoDB service* Architecture design and implementation of scheduled reports delivery to Amazon RedShift* Studying Amazon ELB service* Getting familiar with Driven ( http://cascading.io/ )* Improvement of development processes (code review, estimation process)* Modification of processes for temporary work in distributed manner* Active communication with a customer and other third-party companies* Participation in writing "Apache Cassandra and Low-Latency Applications" article (see below in publications)New technologies and tools:* Driven* Sqoop * AWS: DynamoDB, RedShift, ELB* Jenkins* Python

Saratov Region, Russian Federation

Apr 2012 - Sept 2012Key responsibilities:* Hadoop/HBase cluster monitoring and support* Cassandra cluster configuration, performance and failover testing* Patching Cassandra ( https://issues.apache.org/jira/browse/CASSANDRA-7498?jql=project%20%​3D%20CASSANDRA%20AND%20(assignee%20in%20(azotcsit)%20OR%20reporter%20in%20(azotcsit)) )* Development of client applications for Cassandra based on Hector and Astyanax frameworks* Patching the Astyanax to fit our requirements* Writing technical documentation* Communication with a customerNew technologies and tools:* Cassandra* Hector, AstyanaxOct 2012 - Apr 2013Key responsibilities:* Setting up centralized configuration management for Cassandra via Puppet* Setting up Cassandra monitoring via Zabbix* Cassandra performance tuning * Participation in a migration of Hadoop cluster (+ source code) to a new data center and version* Technical documentation writing* Communication with a customerNew technologies and tools:* Puppet* Zabbix* Linux’s filesystem caches/memory mapped filesMay 2013 - Sept 2013Key responsibilities:* Investigation and understanding architecture of another Hadoop-based processing architecture* Working on creation of new and modification of existing Cascading flows* Writing complicated queries in Pig and custom input data loader for Cassandra SSTables* Cassandra cluster support* Technical documentation writing* Communication with a customerNew technologies and tools:* Pig (advanced)* Cascading* OpenDDR* Bamboo, FishEye

Saratov Region, Russian Federation

Aug 2010 - May 2011I was working as a developer of a J2EE application (services management platform). Key responsibilities:* Understanding project's architecture* Fixing issues (UI/back-end)* Implementation of small features (UI/back-end)* Work on UI automation testingNew technologies and tools:* GWT* Maven* Selenium* Core Java* Spring* HibernateJune 2011 - Sept 2011I was working on "Big Data" project as Hadoop administrator.Key responsibilities:* Hadoop cluster stabilization and support (configuration of resource management, overall configuration tuning)* Setting up monitoring of the cluster* Investigation and performance testing Flume* Investigation of system architecture, processes and business logic* Configuration and improvement of the current ETL processesNew technologies and tools:* Hadoop zoo (HDFS, MepReduce, Hive, Flume, Zookeeper, Pig)* Unix* Nagios, Cacti* Scripting languages (bash, perl)Oct 2011 - Mar 2012I was working as Hadoop/HBase administrator/developer.Key responsibilities:* Setting up, configuration and support of HBase cluster* Participation in design of table schemas* implementation of Java-based tools for analysis (plain map-reduce jobs over HDFS and HBase data)* Small participation in analysis of algorithms* Communication with a customerNew technologies and tools:* HBase* MapReduce from development side