We are looking for a **Senior Systems Development Analyst – Java** to work in a payment ecosystem, developing **evolutionary and corrective projects**, and ensuring high performance, scalability, and security. If you have experience in **payment methods**, especially in the card industry, and want to work in an innovative environment, this opportunity is for you! **Responsibilities and duties** * Develop and enhance systems of the **card processing platform** using **Java and Spring**. * Implement and optimize **microservices** in **Kubernetes** and **AWS** environments. * Work with **relational and non-relational databases**, ensuring high availability and performance. * Develop and maintain **data streaming** solutions. * Implement and manage **distributed caching**. * In-depth knowledge of financial products, particularly in the card industry. * Participate in **architecture definition** and strategic solution decisions. * Interact with **internal and external stakeholders**, ensuring technical and strategic alignment. **Requirements and qualifications** Solid experience (minimum of 4 years) with **Java, Spring, Kubernetes, and AWS**. Advanced knowledge of **microservices, APIs, PCI DSS, and payment security**. Experience with **financial products, especially in the card industry**. Proficiency in **relational and non-relational databases**. Experience in **data streaming** using **MQ Series, RabbitMQ, or Kafka**. Prior experience in the **card industry** (authorization, reconciliation, security, etc.). **Preferred qualifications:** Fluency in **English**. Experience with **event-driven architecture**. Experience in **cloud migration projects**. **Additional information** **Required Corporate Skills and Competencies:** Analytical thinking, technical leadership, collaboration & teamwork, autonomy, proactivity, resilience, and adaptability. On-site position in Barueri, São Paulo. **EXPLORE OUR OPPORTUNITIES** **What CSU Digital does** We are a team of over 4,000 people building innovative, technology-driven solutions for payment methods, customer experience, and customer loyalty and engagement. Since 1992, we have integrated and connected financial institutions, retailers, service companies, and consumers across Brazil. As such, we remain pioneers in launching products and solutions that transform and simplify the daily lives of thousands of people. **Solutions Portfolio** **** **Building a career here** Pioneering spirit and innovation drive us to seek creative and differentiated solutions. We value meritocracy and recognize talent, providing professional development and growth opportunities for our employees. For us, ethics is a fundamental principle that enables us to build strong, lasting relationships with our stakeholders. We believe that commitment focused on sustainable results, and the satisfaction of customers and employees, is the key to success. **Our greatest pride** Watching our employees grow and develop alongside CSU fills us with pride. Each success story, evolution, and overcoming challenge demonstrates how the dedication of our professionals and partnership with the company can transform lives, businesses, and society.