Sergey K.

JavaEE/Spring/Android Developer

I have been dealing with web and mobile development for more than 5 years. Programming is my hobby and lifestyle. And I'm passionate about what I'm doing. I'm always eager to find out something new as this is what makes our life change as well as technologies that improve our lifestyle. This is what mostly fascinates me in my work. I specialize in Java/Spring and mobile for Android (using Java). Here are my main strengths: JAVA, J2EE, J2EE Design Patterns, Hibernate, Spring 4.0, Spring Boot, Spring MVC, Servlets, REST Web Services, JDBC. Android (Java), RxJava2 / RxAndroid, Flutter, Google API, REST API, Payment gateways (Stripe), JSON, SQLite, Material design, Crashlytics, Dependency injection (Dagger 2), Third-party libraries