Smart Core AG is building a scalable core acquiring platform for a fast-growing fintech. You will design and implement microservices in Kotlin/Java, focusing on high performance, fault tolerance, and security. You will work with Kafka/Rabbit MQ, Postgre SQL, Mongo DB, and modern containers in a distributed team. The role requires deep JVM, Spring Boot expertise, and strong problem-solving skills. You will mentor peers, participate in R&D and ensure high-quality code with tests, while collaborating #J-18808-Ljbffr