Knowledge and practical application of oop principles and development patterns , solid working with java core , java 8+ basic knowledge javascript , node.js , angular working with databases mysql , postgresql. working of spring/spring boot , spring mvc , spring data jpa , thymeleaf , spring security , active mq. layout of web pages using html , css applying bootstrap templates site parsing. ( i use jsop library ) working with telegrambot api , discord api , github api , rest api. experience in developing small applications for android experience with java - fx , java - swing. experience with junit mockito , gatling. i used maven in my projects in projects i use the git version control system i used the git hub platform experience with jenkins ci/cd i use os - linux ( ubuntu ) , windows i place finished projects ( deploy ) on heroku and aws ( elastic beanstalk , s3 , ec2 , rds , amazon mq ) examples my jobs ( pet - projects ) : example for rest app : https : //github.com/shurick2211/rest - todo - example example for chat on web - socket spring - boot app : https : //github.com/shurick2211/web - socket - chat example mvc ( crud ) app : https : //github.com/shurick2211/spboot2 example java - core + swing app : https : //github.com/shurick2211/formula - calc - with - gui example telegram - bot with web - ui app : https : //github.com/shurick2211/spboot3 example for java - fx app : https : //github.com/shurick2211/fxbotjob