Development of Cashback management services.- Stack: Java 17-21, Spring Boot 3, Hibernate, gRPC, Maven, Kotlin, JUnit 5, Mockito, TestContainers, Oracle DB, PostgreSQL, Redis, Liquibase, Docker, Docker-Compose, Kafka, Grafana, Vault, Kubernetes, GitLab CI/CD, Prometeus

Development of an enterprise master data management system (MDMS) for a large international customer.- Stack: Java 11, Concurrency, Spring, Maven, PostgreSQL, JUnit 5, Mockito, Apache Tomcat, BitBucket, Jenkins, Docker, Jira, Kafka, ELK, SonarQube, Tibco EBX.- Accomplishments:-- Designed and implemented an event processing prioritization system that significantly accelerated business processes.-- Implemented multi-threaded event processing, which increased the speed of event… Show more Development of an enterprise master data management system (MDMS) for a large international customer.- Stack: Java 11, Concurrency, Spring, Maven, PostgreSQL, JUnit 5, Mockito, Apache Tomcat, BitBucket, Jenkins, Docker, Jira, Kafka, ELK, SonarQube, Tibco EBX.- Accomplishments:-- Designed and implemented an event processing prioritization system that significantly accelerated business processes.-- Implemented multi-threaded event processing, which increased the speed of event processing by x80 times (8000%).-- Configured application monitoring in Kibana to quickly identify errors and performance issues.-- Initiated and successfully integrated SonarQube, Check Style, ELK into the project, finalized old / made new pipelines in CI/CD, which resulted in reduced Code Review time, as well as reduced the number of bugs. Show less

Development and support of more than a dozen plugins for Atlassian Jira and their integration with customer systems- Stack: Java 8, Spring 4.2, JUnit 4, Mockito, Lombok, Apache Velocity, Atlassian Plugin SDK, Maven, PostgreSQL, GitLab, Jira, Docker.

Development of loyalty card exchange service.- Stack: Java 11, Spring Boot, Spring Web, Spring Data JPA, Hibernate, Liquibase, PostgreSQL, GitHub, Maven.

From a TECH perspective:- Managing the TECH department, setting and controlling tasks, assigning responsibilities, preparing reports.- Ensuring smooth operation and administration of a fleet of servers (>30) and workstations (>200).- Composing SQL queries and their optimization. Working with indexes, triggers, stored procedures.- Administration of MS SQL Server (installation, configuration, backup, recovery, security, jobs).- Administration of Linux, Windows 10, Server… Show more From a TECH perspective:- Managing the TECH department, setting and controlling tasks, assigning responsibilities, preparing reports.- Ensuring smooth operation and administration of a fleet of servers (>30) and workstations (>200).- Composing SQL queries and their optimization. Working with indexes, triggers, stored procedures.- Administration of MS SQL Server (installation, configuration, backup, recovery, security, jobs).- Administration of Linux, Windows 10, Server 2008, Server 2012.- AD, DHCP, DNS, FTP, Hyper-V, Remote Desktop, VLAN, Docker.- Implementation (pilot, industrial) and maintenance of more than 15 applications. Show less