Java Developer (Mid & Senior) – Banking & Financial SystemsLocation: São Paulo, Brazil (Hybrid) Are you a Java Developer looking to work on high-impact systems in a leading financial environment? At Qaracter, we are expanding our team in Brazil and looking for Mid-level and Senior Java Developers to join strategic projects within the banking and financial services sector. You will work on mission-critical systems, collaborating with high-performing teams in a dynamic and international environment. What You'll Do Design, develop, and maintain Java-based backend applications Build and consume REST APIs and microservices Work on core banking systems and high-performance platforms Collaborate with cross-functional teams (business, QA, DevOps) Ensure code quality, scalability, and performance Participate in agile ceremonies (planning, refinement, retrospectives) Support deployments and resolve production issues What We're Looking For Mid-Level (3–5 years) Solid experience with Java (Java 8+) Experience with Spring Boot and REST APIs Good understanding of OOP, collections, and clean code principles Experience with relational databases (SQL) Senior (5+ years) Strong expertise in Java and Spring ecosystem Experience designing scalable architectures and microservices Strong knowledge of performance optimization and best practices Experience mentoring junior developers or leading technical initiatives Nice to Have Experience in banking or financial systems Familiarity with cloud platforms (AWS, Azure, GCP) Experience with CI/CD pipelines, Docker, Kubernetes Knowledge of messaging systems (Kafka, RabbitMQ) What We Offer Long-term projects with leading financial institutions Hybrid work model in São Paulo Competitive salary and full benefits package Training, certifications, and continuous development Flexible retribution options (meal vouchers, transport, healthcare, etc.) International and collaborative environment About Qaracter Qaracter is an international consulting firm providing business, financial, risk, technology, and operations advisory services. We combine deep industry knowledge with hands-on execution to deliver real impact. With presence in Spain, Argentina, Mexico, Brazil, and the United States, and activity across Europe and the UK, we partner with top-tier organizations on complex transformation initiatives. Equal Opportunity Statement At QARACTER Group, we are committed to ensuring equal opportunities and non-discrimination in all our processes, promoting an inclusive and diverse work environment. All applications are welcome regardless of sex, gender, gender identity or expression, sexual orientation, origin, ethnicity, age, disability, or any other personal or social condition, in line with our Plan de Igualdad and our commitment to equity.