Programming languages (data analysis and machine learning): Java, Scala, Python.
Big Data analysis in the Hadoop environment (Cloudera, HortonWorks) using Mapreduce, Spark and utility tools HUE, HCatalog, Hive, Impala, Pig Latin, Sqoop, Solr, Oozie, CDSW.
Designing machine learning algorithms with TensorFlow, Pandas, Keras libraries.
Deploying web services based on trained machine learning models in Azure ML Studio.
Programming techniques and application programming interfaces for accessing database management systems: ODBC/JDBC, ADO.NET, ORM, LINQ.
Graphical Database Management Tools: DevArt dbForge Studio, EMS SQL Management Studio, Navicat, SQLite Expert, Oracle SQL Developer, Quest (Toad, Spotlight, SQL Optimizer), Attunity Compose, Oracle Enterprise Manager.
Database Design: relational data model, aggregate data models (key-value and document models, column-family stores), distribution models (single-server replication, sharding, master-slave replication, peer-to-peer replication, combining sharding and replication), consistency, version stamps, partitioned tables and indexes.
Experience in Relational DBMS: Oracle Database, Microsoft SQL Server, MySQL (MariaDB), PostgreSQL, IBM DB/2, SQLite.
Experience in NoSQL DBMS: Cassandra, HBase, MongoDB, LevelDB, Riak, Memcached.
Experience in Cloud DBMS: Oracle Autonomous Database, Amazon RDS, Amazon Redshift, Amazon DynamoDB, Azure SQL Databases, Azure Cosmos DB, Redis Cache.
Software Design (selecting methods, selecting integrated development environment, selecting frameworks, developing data presentation, developing algorithms, developing tests, writing specifications, scheduling).
Designing real-time data pipelines and streaming apps using Apache Storm, Apache NiFi, Apache Kafka.
Developing integration solutions, including experience with Microsoft BizTalk Server.
Experience in applying graphic notations: UML (Business System View, IT-System View, Integration View), ERM, DFD, BPMN.
Сhange management with version control systems: Git (GitHub, Bitbucket, GitLab), Microsoft Team Foundation.
Understanding the basics of application lifecycle management, including experience with Microfocus and IBM Rational software products.
IT-infrastructure and service strategy management using ITIL, ITSM, MOF, as well as process approach.
Use of IT-infrastructure management and monitoring systems IBM Omnibus, Ivanti (ex-Landesk Management Suite), Microsoft Operations Management Suite, Paesler PRTG, Ipswitch Whatsup Gold, Zabbix and etc.
Web application security audit: IBM Rational Appscan, Microfocus Fortify WebInspect, Accunetix Vulnerability Scanner.