Denis Pavlenko Email & Phone Number

Украина

FinTech member portal - financial trading portal based on several related microservices. Enables organizations to manage a range of marketplaces via a hub on the trader’s desktop, through which a range of venues, products and services are accessed seamlessly.Key Responsibilities: - Creating a microservice architecture for connecting users, organizations and trading rooms and mechanisms. - Design and implement an authorization and authentication logic (MS, Cognito… Show more FinTech member portal - financial trading portal based on several related microservices. Enables organizations to manage a range of marketplaces via a hub on the trader’s desktop, through which a range of venues, products and services are accessed seamlessly.Key Responsibilities: - Creating a microservice architecture for connecting users, organizations and trading rooms and mechanisms. - Design and implement an authorization and authentication logic (MS, Cognito, Ping) - Design and implement whole flow of business logic from retrieving firm and trade code till managing trading rooms - Design and implement an internal/external REST API Layer. - Integration with Kafka queue system and GraphQL flow to connect between other services.Languages: Java, SQL, GraphQL.Technologies: Java, Spring Data, Spring REST, Spring Boot, Spring Security, FeignClient, Hibernate, PostgreSQL, Kafka, Swagger, Lombok, MapStruct, JUnit, Mockito, Spring Test, Maven, Docker, Jenkins. Show less

Lviv Region, Ukraine

Data collection platform.The main goal is transformation, consolidation, merging and filtering information from incoming data, feeding processed data to client consumer services.Key Responsibilities:- Creating mechanisms for processing incoming data and sending results to the end user.- Design and implementation of a internal/external REST API Layer.- Writing Unit and integration tests.- Integrating new technologies.Technologies:Java, Spring, Spring Data,… Show more Data collection platform.The main goal is transformation, consolidation, merging and filtering information from incoming data, feeding processed data to client consumer services.Key Responsibilities:- Creating mechanisms for processing incoming data and sending results to the end user.- Design and implementation of a internal/external REST API Layer.- Writing Unit and integration tests.- Integrating new technologies.Technologies:Java, Spring, Spring Data, Spring REST, Spring Boot, PostgreSQL, Apache Kafka, REST, Swagger, Lombok, JUnit, Mockito, Spock, Spring Test, Maven, Docker Show less

Lviv Region, Ukraine

Application store solution that supports user/device/application/billing and subscriptions management for big US media partner. The main goal of the project was a migration of an active monolith solution to micro-service based architecture.Key Responsibilities:- Creating mechanisms for processing, consuming and persisting system entities in micro service context.- Migration of application store billing system from .net technologies to java micro service architecture.-… Show more Application store solution that supports user/device/application/billing and subscriptions management for big US media partner. The main goal of the project was a migration of an active monolith solution to micro-service based architecture.Key Responsibilities:- Creating mechanisms for processing, consuming and persisting system entities in micro service context.- Migration of application store billing system from .net technologies to java micro service architecture.- Integration with messaging queue systems (Apache Kafka).- Implementation of a background jobs logic based on Quartz solution.- Design and implementation of a REST API Layer.- Design and migration of current DB scheme and data from MSSQL to AWS RDS.- Writing technical specifications and REST API documentation- Writing Unit and integration tests.- Integrating new technologies.Technologies:Java/C#, Spring, Spring Data, Spring REST, Spring Boot, Spring Security(basic level), AWS client SDK, FireBase client SDK, MySQL, Quartz, Apache Kafka, REST, Swagger, Lombok, JUnit, Mockito, Spring Test, Gradle, DockerSoft Skills: Participation in Lviv Java Day(GL) as an interviewer, also in JavaBase Camp as an interviewer/lector/mentor. Another mentor expertise were gained during work on project which were created from scratch and i worked together with trainee. Show less

Lviv, Ukraine

High scalable and flexible smart home IoT solution for US communication customer.Key Responsibilities:- Integration with messaging queue systems (MQTT).- Design and implementation of a REST API Layer.- Writing technical specifications and REST API documentation- Design and implement logging solution- Writing Unit and integration tests.Technologies:Java, Spring, Spring Data, Spring REST, Spring Boot, MySQL, MQTT, REST, JUnit, Mockito, Gradle, Maven

Lublin, Lublin District, Poland

Cameleoo platform, server side developing (Spring, GWT/GXT, Groovy).

Украина

Server side developing on Hybris platform.

Frontend and Service-oriented architecture(SOA) development, jstl/javaBeans, jsp/css/js

Teaching basic possession of Jave SE/EE

- development and support server side applications for social games- development server side games logic- development desktop swing-application for testing server side - teamwork

Specialist, Economic Cybernetics

Programmer