Java Senior Backend Developer

Visa Hunt; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Visa Hunt in Singapore seeks an experienced Java engineer to diagnose complex production issues while driving strategic feature development. You will be the main technical contact for high-priority change requests and ensure platform stability and scalability.

You will collaborate with QA, product managers, and frontend teams to validate requirements, perform RCA on incidents, and mentor junior developers in Java, SQL, and modern web stacks.

Qualifications

• Minimum 2-3 years of experience.
• Strong knowledge of Java, SQL, and frontend/backend integration.

Responsibilities

• Advanced Troubleshooting: Lead investigation and resolution of complex production issues and performance bottlenecks.
• Feature Evolution: Design, develop, and deploy change requests ensuring seamless integration with existing architecture.
• System Maintenance: Perform root cause analysis for recurring incidents and implement long-term fixes.
• Code Quality & Mentorship: Conduct code reviews and guide junior developers on best practices in Java development.
• Legacy Modernization: Refactor and modernize older codebases for maintainability and security.
• Collaboration: Work with QA, Product Managers, and Frontend teams to validate requirements and ensure end-to-end functionality.

Skills

Java

SQL

ReactJS/NodeJS

Job description

Role Overview

This role is a blend of high-stakes problem-solving and strategic feature development. You will be the primary point of contact for diagnosing complex production issues while simultaneously driving the implementation of high-priority change requests to evolve our platform.

Responsibilities

• Advanced Troubleshooting: Lead the investigation and resolution of complex technical issues and performance bottlenecks reported by stakeholders or monitoring systems.
• Feature Evolution: Design, develop, and deploy new change requests (CRs), ensuring that new features integrate seamlessly with existing architecture without introducing regressions.
• System Maintenance: Perform root cause analysis (RCA) for recurring incidents and implement long-term structural fixes rather than "band-aid" patches.
• Code Quality & Mentorship: Conduct thorough code reviews and provide technical guidance to junior developers, championing best practices in Java development.
• Legacy Modernization: Identify opportunities to refactor and modernize older codebases to improve maintainability, scalability, and security.
• Collaboration: Work closely with QA, Product Managers, and Frontend teams to validate requirements and ensure end-to-end functionality.

Qualifications

Minimum 2-3 YOE

Top 3 Skills Needed

• Java
• SQL (Database)
• ReactJS / NodeJS

Only for Singaporean