Russian (native), English (reading documentation)
Java SE 8+
Spring IoC , Spring MVC, Spring Data
Maven (base knowledge), Gradle
JDBC, JPA(Hibernate)
Unit testing(JUnit, Mockito)
VCS git
Docker
Front JavaSript Vue.js with UI frameworks such quasar
Node.js (ES5, ES6, little TypeScript) Express, TypeORM, SequelizeJS, testing(mocha, chai, sinon)
PHP Yii2
SQL MySQL
REST, SOAP API and SPA
NoSQL MongoDB
Linux Debian->Ubuntu