Senior Kotlin Backend Developer

Our purpose is to create technologies that challenge the world's best and change the game for our clients. Therefore, we look for professionals who want to be part of a culture driven by excellence and innovation. If you identify with a collaborative work environment driven by curiosity, come build the future of technology with us. We value the continuous growth of zuppers, encouraging each person to pursue paths that boost their professional evolution. We are looking for a Kotlin backend developer to work on one of the country's main core banking systems, in a high-criticality and high-performance environment, utilizing the best of AWS. You will participate in projects that require technical excellence, critical thinking, and a systemic vision, collaborating in multidisciplinary teams that value innovation, security by default, and continuous value delivery. What you will do here: Develop, evolve, and maintain backend services using Kotlin, ensuring high performance, scalability, and security for core banking systems in mission-critical environments. Work on the architecture and implementation of cloud-native solutions on AWS, using EKS/Fargate for container orchestration, SQS for messaging, DynamoDB for persistence, and applying Well-Architected Framework practices to ensure robustness, cost efficiency, and compliance. Implement messaging and streaming integrations with Kafka and SQS, ensuring resilience, monitoring, and processing.