Roman Havryliuk

Development of server side business logic in coordination with multiple clients development team. Participating in Agile team development process. Analyzing business requirements, and implementing them. Writing unit tests and fixing bugs. Integration with Kafka streaming for real time dashboards. Use of MySQL and MongoDB databases.

Responsibilities: development of business logic for the advertising platform. Integration with Hadoop for data analysis and reports, CDN integration. Taking part in Microservice Architecture planning. Implementing high load multi layered REST services with non-blocking IO network framework and NoSQL databases. Technologies used: GWT, Spring, MyBatis, Hibernate, JUnit, PostgreSQL, MongoDB, Aerospike, Netty.

Responsibilities: development and support of J2EE applications using GWT, Spring, Ibatis, Hibernate, Unit testing. Development of the new features, change requests and bug fixes for the existing software. Participation in design meeting/reviews. Working with requirements and design analysis, application and technical architects to gather and interpret user/system requirements into code and programming specifications.

Development and support of J2EE applications for JBoss application server. The creation of clients logic using Javascript/Ajax – prototype and JQuery. Designing of company business processes for products creation, coordination of departments workflow (IBM Lotus Notes/Domino). Designing of XMPP/jabber desktop client using graphic interface Swing.

Development of web applications using PHP/MySQL. Requirements specifications construction and startup support.