Job Summary: We are seeking a FullStack Developer with a focus on Java Backend and AWS to design, develop, and maintain robust and scalable technology solutions. Key Highlights: 1. Design, develop, and maintain backend applications in Java and AWS. 2. Collaborate in a hybrid environment with multidisciplinary teams. 3. We value innovation, respect, and commitment. Join Stefanini! At Stefanini, we are more than 30\.000 geniuses, connected from 41 countries, doing what they love and co\-creating a better future. **Responsibilities and Duties** FullStack Developer (Java Backend – AWS Focus) Role Overview * The FullStack Developer with a focus on Java Backend will be responsible for designing, developing, and maintaining robust, scalable, and secure technology solutions, primarily within the AWS environment. This role requires proven experience in microservices development, consuming and exposing REST and SOAP services, and integrating with relational and non-relational databases. The professional will work in a hybrid environment, closely collaborating with multidisciplinary teams to ensure delivery of solutions aligned with business objectives. Key Responsibilities * Design, develop, and maintain Java backend applications, ensuring solution quality and scalability. * Implement and maintain microservices on AWS using Lambda, API Gateway, and DynamoDB. * Integrate and consume REST and SOAP services, ensuring system interoperability. * Participate in database modeling and query optimization in Oracle PL/SQL and SQL Server. * Collaborate on continuous integration and deployment using Jenkins, SonarQube, and GIT. * Conduct unit testing and ensure compliance with software quality standards. * Work collaboratively in a hybrid environment, adapting to change and promoting continuous improvement. * Document developments and actively participate in team meetings. **Requirements and Qualifications** * University degree in Systems Engineering, Computer Science, Information Technology, or related fields. * Certifications in AWS or Java technologies will be valued. * Minimum 2 years of proven experience in Java Backend development and associated technologies. Required Technical Skills * Java Backend development (minimum 2 years). * Experience with AWS Lambda, API Gateway, and DynamoDB. * Consuming and exposing SOAP and REST services. * Experience in microservices development. * Version control management with GIT. * Experience in continuous integration and deployment with Jenkins and SonarQube. * Unit testing. * Knowledge of Oracle PL/SQL and SQL Server (including SSIS). * Entity\-relationship modeling. * Experience with postal SOAP interfaces (desirable). Required Soft Skills * Teamwork. * Leadership and proactivity. * Adaptability to change. * Continuous learning. * Results orientation. **Additional Information** Are you looking for a place where your ideas shine? With over 38 years of experience and a global presence, at Stefanini we transform tomorrow together. Here, every action counts and every idea can make a difference. Join a team that values innovation, respect, and commitment. If you are a disruptive individual, committed to continuous learning, and innovation is in your DNA, then we are exactly what you’re looking for. Come and let’s build a better future together!