Knowledge of Service Oriented Design & implementing RESTful APIs, JSON, Web services and XML Strong knowledge and working experience in relational database technology: SQL, JDBC, Oracle Experience with Web Services (JAX-RPC, JAX-WS, JAXB, RESTXML-over-HTTP, SOAP, WSDL) Experience with Data technologies like Hadoop, Spark, Hive, and Map Reduce   Additional Information  Visa has adopted a COVID-19 vaccination policy to safeguard the health and well-being of our employees and visitors