Aleksandr Ushakov Email and Phone Number

Development of B2B credit system

Support and development of feed and advertisement in OK social network. Highload project with tens of millions monthly active users and hundreds of thousands of requests per seconds, with high availability requirements. Stack: Java 8/17, Spring, Kafka, Cassandra, Ant, Ivy, Gradle

• Design, development and implementation of solutions in a large-scale project for the development of banking services in microservice architecture, taking into account increased requirements for load and availability, on the CBS Athena MSA Platform• Design and development of a system for generating and delivering reports based on the BIRT and Yarg libraries• Development of a prototype Capture Data Change system based on the source code of the Debezium projectStack: Java 11/17, Spring Boot (Core, Web, Data JDBC, Data JPA, Security), Liquibase, PostgreSQL, Keycloak, Debezium, Kafka Connect, Typescript, Angular, Eclipse BIRT, Yarg

Support and development of a multi-module system for verifying counterparties using technologies such as:• Spring 4 (without Boot)• Hibernate (+ Criteria API)•Tomcat• Java 11• Liquibase• PostgreSQL• Git• Jira• JUnit• Mockito• JSoup• SAXParser• Apache POI• Thymeleaf• JQuery• JavaScript• Bootstrap 3Migrating the frontend part of the application to a more modern stack:• Typescript•React• Mobx• Minimals UI• React Testing Library• JestGuiding the migration of a monolithic project with a codebase of more than 2 million lines from the following stack:• Tapestry• Java 7• PostgreSQLOn a microservice architecture using technologies such as:• Java 11• Spring Boot (Web, AOP, Security, Data JPA)• Docker• Redis• Keycloak• Apache Kafka• Kubernetes (+ Kustomize)• Prometheus• Grafana• PostgreSQL• Liquibase• TestContainers• JUnit• Mockito

Development of a RESTful web service for the integration of corporate systemsTechnology stack:• Java 11• Spring Boot (Web, Data JPA, Validation, AOP)• PostgreSQL• JUnit• Mockito• OpenAPI 3• Gitlab• Maven

Development of a landing page with an admin panel and the ability to publish news for a private companyTechnology stack:- Java 11- Spring Boot (Web, Data JPA)- Next.js- PostgreSQLDevelopment of a seaport operation simulation system with the function of optimizing the schedule and equipment in terms of profit.Technology stack:- Java 11 (Multithreading)- Spring (Boot, Data JPA, Security, Web)- PostgreSQL- SOA- REST API- Swagger