Maintain and troubleshoot existing portal systems.Develop and implement enhancements and updates to the current portal.Analyze business and system requirements and ensure technical feasibility.Design and develop software using Java, Maven, Spring Framework, and Oracle.Collaborate with internal stakeholders and external vendors; provide technical direction and support.Write clean, efficient, and testable code.Ensure quality and stability through code reviews, unit testing, and debugging.Support deployment, integration, and ongoing system reliability.