Design, develop, test, and maintain Java-based applications with a focus on fintech solutions (payment gateways, POS systems, digital wallets, etc.). Collaborate with the Java TL and cross-functional teams to define technical requirements and system architecture. Write clean, efficient, and well-documented code following best practices. Lead code reviews, mentor junior developers, and ensure adherence to coding standards. Troubleshoot, debug, and optimize applications to improve performance and scalability. Integrate with third-party APIs, payment systems, and fintech platforms. Ensure applications comply with fintech security standards (PCI DSS, encryption protocols, data privacy). Participate in Agile ceremonies (sprint planning, daily stand-ups, retrospectives). Support deployment activities, monitor application performance, and provide post-production support. Stay updated with emerging technologies, tools, and fintech industry trends.