Join our team at OSF Digital, where innovation meets excellence in the realm of digital transformation. As the largest global Salesforce Partner, we're on the lookout for talented individuals who resonate with our core values of integrity, client-centricity, and collaboration. At OSF, we harness AI to create smarter, more efficient solutions that propel businesses forward. We believe in the power of remote work and the flexibility it brings to our one-team culture, fostering a global community of forward-thinkers. Our employees enjoy a range of benefits designed to nurture their professional growth, continuous learning opportunities, a collaborative culture, and the chance to work on transformative projects with a global impact. We are looking for a dynamic and proactive Back-end Developer SR with a focus on Java to join our team. Responsabilities: Backend Development: Design and build server-side components, including APIs and databases, using Java and relevant frameworks, ensuring clean and maintainable code. API Work: Implement and integrate RESTful APIs, manage data validation, and handle errors, possibly integrating with external services. Database Management: Design and optimize databases for performance, maintain data integrity, and work with various database systems. Testing & QA: Conduct unit and integration tests to maintain code quality, identify bugs, and optimize performance. Frontend Collaboration: Work with frontend developers to integrate systems. Security Implementation: Enforce backend security through authentication, authorization, and encryption practices. Performance Tuning: Enhance backend performance and scalability, including query optimization and system efficiency improvements. Troubleshooting: Diagnose and fix backend issues, optimize performance, and maintain system stability. Team Collaboration: Engage with cross-functional teams to meet project goals, requiring strong communication and teamwork skills. Requirements: Strong knowledge and experience in Java programming language, including understanding of core concepts, syntax, and best practices. Experience in building server-side applications and APIs using Java frameworks such as Spring Boot. Proficiency in working with relational databases like MySQL, PostgreSQL, or Oracle, including knowledge of SQL, data modeling, and database optimization . Understanding of web development concepts and technologies such as HTTP, RESTful APIs, JSON, and XML. Strong understanding and application of OOP principles, including encapsulation, inheritance, and polymorphism. Familiarity with popular Java frameworks and libraries such as Spring Framework, Hibernate or Apache Kafka. Experience with unit testing frameworks like JUnit and knowledge of software testing principles and practices. Proficiency in using version control systems like Git for code management and collaboration. Strong analytical and problem-solving skills to identify and resolve issues in the backend code and infrastructure. Understanding of security principles and best practices for securing backend applications, including authentication, authorization, and data encryption. Knowledge of performance optimization techniques, such as caching, indexing, and query optimization, to ensure efficient and scalable backend systems.