Kostiantyn

Kostiantyn Andrushchenko Ukraine, Kharkiv
[open contact info](look above in the "contact info" section)
(Phone/Telegram/Viber)
Java developer / Software engineer
[open contact info](look above in the "contact info" section)
Summary: skype: kossandr242
• Back-end developer
• have experience in development commercial gaming platforms
• have an understanding of event-driven models
• have experience in multithreading / concurrency
• familiar with Docker and Linux

EXPERIENCE SKILLS

DigitalHouse LLC, Luhansk– Java developer Java 7, 8, 11+, 17
jun, 2008 – aug, 2015 Stream API
Multithreading
PragmaticPlay, Kyiv – Java developer Collections
aug, 2015 – jul, 2020
Spring (core, mvc, data, etc)
iTransition, Minsk – Java developer Spring boot
dec, 2020 – apr, 2021 Netty / Apache MINA
Freelance from may 2021 – jan 2022 JDBC / JPA, Hibernate
Redis / Ehcache / RabbitMQ
SupportYourApp, Kyiv – Java developer Servlets / JSP / JSTL / Struts
may, 2022 – oct, 2022
Unit test frameworks:
EDUCATION JUnit / Mockito
Volodymyr Dahl East Ukrainian National University, Markup/Frontend:
Luhansk. Bachelor degree, 2006 – 2010 HTML / CSS / XML
Automation and Computer Integrated Technologies Software JSON / Javascript / JQuery
engineer Databases:
MySQL / Postgres / Oracle /
PROJECTS
MongoDB
• RESTful microservices with several purposes: Gateway API, Game Version control:
servers, DB access services, facade services to external systems SVN / Git
• Web admin applications for system configuration and financial
Build tools:
reports building
Ant / Maven / Gradle
• Socket / websocket chat servers which provide communication
App servers:
between game clients and support service
• Communicator applications to external mailing services Resin / Tomcat
Other:
• Custom clustering of stand-alone chat servers
Docker / K8s
• IP telephony services based on Asterisk
Consul discovery service
All the projects were long term. Jmeter / Postman
Regular expressions /
Participated in: JConsole, VisualVM /
• Development; solutions designing Windows / Linux user /
• Refactoring of applications; legacy functionality support
LANGUAGES
• Bug fixing
Українська (native)
• Unit tests writing English (Intermediate+)
• Tasks planning Русский (native)
• Worked in small teams (3-5 persons; Agile processes)