+ Java:
- - - Java Core
- - - Spring Framework
- - - Spring Boot
- - - Spring Security
- - - Spring MVC
- - - Spring Data JPA
- - - Spring Data REST
- - - Spring Configuration Processor
- - - Spring Oauth 2
- - - Spring Cache (Redis)
- - - Shedlock
- - - Open Feign
- - - Map Struct / Model Mapper
- - - Spring WebSocket (RabbitMQ STOMPT)
- - - Thymeleaf
- - - Flyway

+ NodeJs:
- - - TypeScript
- - - ESLint
- - - Promise (async/await)
- - - Express
- - - NestJs (ExpressJs, Fastify)
- - - Telegraf
- - - TypeORM and Sequelize
+ Frontend
- - - React
- - - Redux
- - - Redux Saga
+ SQL
+ Git
+ GitHub Actions
+ Docker
+ PostgreSql
+ RabbitMQ
+ Apache Kafka
+ Rabbit MQ
+ Amazon SQS
+ Amazon S3
+ Amazon SES
+ Redis
+ ClickHouse
+ ElasticSearch