Work with top-tier engineers on mission-critical systems for global-scale ad operations.We're hiring a Java-21 Dev-Engineer to join our growing team.You'll be part of the Billing team, a core area handling high-throughput financial operations that directly impact global advertising services.Working hours must fully overlap with 9AM–6PM Central TimeJoin a cross-functional team experts to build and maintain reliable systems at scale.You'll design backend services that support our billing infrastructure, ensuring real-time performance, data integrity, and system resilience.Essential functionsDesign and implement scalable backend services with Java21 and DropwizardDevelop and maintain robust RESTful APIsOptimize and manage Oracle 12 and Cassandra databasesIntegrate services using Apache Kafka in an event-driven architectureMonitor and maintain system health and performanceWrite unit tests with JUnit and participate in code reviewsCollaborate closely with frontend, QA, and product teamsQ...