Core system VnTopup

• Description: VnTopup is the service for top-up of prepaid and postpaid mobile phone account from customer’s bank account • Tem size: 4 people in 6 months • Responsibilities: Coding follow document and review code • Programming Language: Java • Database: Oracle • Framework: Netty • IDE: Netbeans • Message Queuing: Kafka Apache • NoSql: Redis • Logger: Log4j2 • Communication message: Json