Java Developer

Shift Timings: 4 AM to 12 PM

Key Responsibilities:

• Analyze existing BAU Java codebase to identify components built on outdated or corrupted libraries
• Design and implement a re-engineering strategy to rewrite affected modules using current, stable Java/Spring Boot practices
• Containerize and modernize deployment using Docker, ensuring consistency across environments
• Ensure all existing business controls, validations, and compliance checks are preserved and thoroughly tested through the rewrite
• Work within the payment processing domain, understanding transaction flows, settlement logic, and related controls
• Collaborate with the client's technical and business stakeholders to validate functional parity post-rewrite
• Conduct root-cause analysis on any defects introduced during migration and resolve proactively
• Provide technical documentation of the re-engineered components for future maintainability
• Work independently in a PNG shift-aligned schedule, coordinating with distributed teams as needed

Must-Have Requirements:

• 6+ years of hands-on Java development experience
• Strong, demonstrated experience in code re-engineering / legacy modernization (not just feature development)
• Hands-on Docker experience (containerization, deployment)
• Payment processing domain experience is mandatory - transaction processing, payment gateways, settlement, or related systems
• Proactive, self-driven approach with the ability to work independently on ambiguous, high-stakes rewrites