I am a hardworking Java architect with experience in Hadoop and blockchain technologies. One of my biggest projects was integration of HDFS, YARN and Oozie into existing Performance Management System with a lot of legacy code in C. In another project, I developed a Data Warehouse for storing billions of records of passengers’ personal data using Oracle RDBMS with performance tuning. Also I've worked on developing and optimisation smart contracts on Ethereum blockchain. In addition, I have experience as a mentor for junior Java developers for over two years. Having worked as a Java architect and team leader, I am interested in learning new technologies and creating scalable high performance systems using Big Data and blockchain technologies, as well as traditional relational technologies.