Job Summary: We are looking for a professional to work on a high-criticality legacy system migration project, evolving legacy functionalities and building Java APIs, ensuring integrity and performance. Key Highlights: 1. Work on high-criticality legacy system migration 2. Evolution of legacy functionalities and Java API development 3. Participation in monolith strangulation strategies with CI/CD **We are looking for someone who dares to co-lead with us.** **Responsibilities and Duties:** Work on high-criticality legacy system migration projects. Responsible for evolving and encapsulating legacy functionalities (ColdFusion/PHP), building/exposing Java APIs, and ensuring integrity and performance in Sybase and SQL Server. Participate in monolith strangulation strategies, integrations, testing, and cutover using CI/CD pipelines in Azure DevOps. **Requirements and Qualifications:** * Java * WebLogic * ColdFusion or PHP (legacy maintenance and evolution) * Databases: Sybase and SQL Server (modeling, stored procedures, views, tuning, transactions) * Integrations: REST/JSON * SOAP knowledge is a plus in legacy scenarios * Azure DevOps: Git repositories and CI/CD pipelines (build/test/release) * Testing: JUnit/TestNG, Mockito, integration tests * Postman/Newman for APIs * Best practices: clean code, SOLID, API design, error handling, structured logging * Security: authN/authZ (JWT/OAuth2), environment-specific secret/variable management **Additional Information:** * For your health, we offer **medical and dental assistance** with no copayment for exams and consultations. * Want more well-being? We offer **Gympass** and **Zenklub** (with two free sessions per month) to support your physical and mental health. * Love to travel? We have **Férias & Co**, a benefit that helps you make your dream trip possible. * Growing family? We offer **MomCare**, a flexible monetary incentive post-maternity leave for new Datunian mothers. * Want to invest in your professional development? We partner with several renowned educational institutions to offer you discounts of up to 70% on **undergraduate**, **graduate**, **MBA**, **language**, and many other courses! **To learn about all our benefits, visit the homepage of our careers page.**