Deconstruction to microservices and development of resolver for Jira Query Language (SQL-like language used for searching issues in Jira), which enables scaling for big clients in cloud. Creation of tree data structure from string query, optimization and resolution of input to database ids.
Kotlin, Spring boot, ANTLR, PostgreSQL.

Prepared and conducted classes with a group of students featuring basics of OOP, SOLID, SQL, algorithms and data structures, spring boot environment.
I took part in preparing students to be software developers, which resulted in about 80% of them getting their first job in the industry.

Development and maintenance of online banking system, used by bank clients via webpage and android app.
Spring boot RESTful backend, hibernate, JDBC, Android application, Retrofit. Practised SCRUM and CI/CD. Unit, integration and contract testing.