Qualification:10+ years of experience building distributed scalable back services heavily relying on distributed messaging, storage, and compute Expert knowledge and extensive hands-on experience with Java 11+ (including streams and reactive) and Mongo (including very complex aggregation queries)Hands-on experience with Spring, Spark, Docker, and Kubernetes Strong understanding and experience with CI/CD pipelines, unit and integration testing, containerization, monitoring and alerting, production logs debugging Strong collaboration skills, system thinking and ability to clearly explain complex conceptsKafka, Cassandra, Solr, HDFS, Scala experience is a plus.