Project #5: Enterprise insurance system ▪ Software architecture design ▪ System analysis ▪ Performance investigation ▪ Documentation creation Environment: Kotlin, Quarkus, Spring, Micro-services, PostgreSQL, Azure Cloud, Android Project #4: High load rating engine for reinsurance business ▪ REST services creation ▪ Data processing ▪ Business flow implementation ▪ DB schema design ▪ Software architecture design ▪ Team members leading and supervision, code review ▪ Communication with stakeholders and client ▪ CI/CD pipelines creation ▪ Infrastructure set up ▪ Technical documentation creation Environment: Java, REST, Spring, Hibernate, Oracle, PostgreSQL, Azure Cloud Project #3: Enterprise reinsurance front-office ▪ REST services creation ▪ Back-end services development ▪ Auto tests (unit, component, integration) implementation ▪ GraphQL endpoints implementation ▪ Performance optimization ▪ Bug fixing and production issues support ▪ SPA UI client implementation ▪ Team members leading and supervision, code review ▪ Technical documentation creation Environment: Java, REST, GraphQL, Spring, Hibernate, Oracle, PostgreSQL, Angular Project #2: Enterprise reinsurance geo risks assessment and rating ▪ Architecture design ▪ DB schema design ▪ REST services creation ▪ Back-end services development ▪ Auto tests (unit, component, integration) implementation ▪ SPA UI client implementation ▪ Bug fixing and production issues support ▪ CI/CD pipelines creation ▪ Infrastructure set up ▪ Team members leading and supervision, code review ▪ Technical documentation creation Environment: Java, REST, Spring, Hibernate, Oracle, PostgreSQL, Azure Cloud, Google Maps, Angular Project #1: RBAC engine and front-end for enterprise applications landscape ▪ DB schema design ▪ Back-end services development ▪ Auto tests (unit, component, integration) implementation ▪ Front-end development ▪ Performance optimization Environment: Java, GWT, EJB/CDI, Oracle

Project #5: Online booking system for hotel network ▪ DB schema design ▪ Back-end services development ▪ Auto tests (unit, component, integration) implementation ▪ Front-end development ▪ Performance optimization ▪ Bug fixing and production issues support ▪ CI/CD pipelines creation ▪ Infrastructure set up ▪ Team leading ▪ Mentoring, supervision, code review Environment: Java, JSP / Servlets, JDBC, JavaScript, MS SQL Server Project #4: Ticket booking, sales and loyalty system ▪ Back-end services development ▪ Auto tests implementation ▪ Performance optimization ▪ Business flow implementation Environment: Java, EJB, jBPM, JSP / Servlets, JDBC, Oracle Project #3: Document management system ▪ Back-end services development ▪ Auto tests implementation ▪ Performance optimization ▪ Bug fixing / support Environment: Java, Swing, EJB Project #2: Document management system ▪ Back-end services development ▪ Auto tests implementation ▪ Performance optimization ▪ Bug fixing / support Environment: Java, Swing, Java Services Project #1: Subscription billing and payment system ▪ Back-end services development ▪ Auto tests implementation ▪ Performance optimization ▪ Bug fixing / support Environment: Delphi, ADO, Oracle