Sr Java Backend Developer (Guadalajara)

Java-21 Dev-Engineer We are hiring a Java-21 Dev-Engineer to join our Billing team, a core area handling high-throughput financial operations that directly impact integral advertising services.
Working hours must fully overlap with 9 AM–6 PM Central Time.
Responsibilities Design and implement scalable backend services with Java 21 and Dropwizard.
Develop and maintain robust RESTful APIs.
Optimize and manage Oracle 12 and Cassandra databases.
Integrate services using Apache Kafka in an event-driven architecture.
Monitor and maintain system health and performance.
Write unit tests with JUnit and participate in code reviews.
Collaborate closely with frontend, QA, and product teams.
Qualifications Strong experience with Java 21.
Experience with cloud and infrastructure services on AWS (EKS, ALB, S3).
Proficiency in unit testing with JUnit.
Knowledge of relational databases (Oracle) and No SQL databases (Cassandra).
Experience with even...