Egor Litvinenko

Programatic advertisement segment and close. My role includes: performance issues, designing/implementing difficult features and architecture, consulting. Java 8, multithreading, concurrency, Clickhouse, Vertica, Cassandra, Big Data, High Load, etc. Some projects I'm involved: * GDPR migration * Demand Side Platform * Ad Server * Event Server

Our customer is marketing company which provides service for Top 10 Fortune and others. We create data preparation tool. Generally, my role includes performance issues, design and implementing new features. Scrum, Java 8, Spring, Hibernate, Bamboo, Apache Spark, Apache Parquet, R, etc. Company and product was successfully purchased.

Collecting requirements from customer, design system, time estimate, code review, implementation new features, custom support and problems solving. We use: Java 7, Spring Framework (Data REST, Security, AOP, IoC, etc), Hibernate, Oracle DB 12, Knockout.js, Jboss 7.0.1, Runawfe, BPMN 2.0, etc.

Monitoring system and BI My responsibilities included: 1) Collecting requirements; 2) Design and implement ETL operations; 3) Reports customization and integration with external systems; 4) Develop UI; EDI We created EDI system with up 2000 users for very specific tasks of customer. In particulary I 1) Implemented UI interface (Zkoss 7.0.1); 2) Designed, implemented and supported security subsystem; 3) Designed, implemented, supported file backend processing subsystem;

Orders prediction system Head-office Distributed system for order prediction calculation. 1) I refactored Java code and reduce memory usage to 30%, increase performance to 10%; 2) Designed and implemented new functionality. System was successfully pass to support. EDI Head-office I supported and implemented new functionality in EDI system with up 6000 service objects.

Design and implement a data warehouse for Central District Prosecutor's Office of Krasnodar from the scratch; We created first Situation Center for Krasnodar, where I was a team leader;