Backend Engineer (Java/Hadoop)

Quesscorp Singapore Pte Ltd; Singapore; On-site; SGD 54,000 - 89,000; Full time

Job summary

Quesscorp Singapore Pte Ltd is seeking an experienced Backend Engineer with strong Java and Hadoop expertise to support a Hadoop data layer modernization initiative in Singapore. You will enhance applications, integrate backend services, and support platform migration, testing, troubleshooting, and production stabilization in a distributed data processing environment.

Responsibilities include analyzing existing components, designing and implementing code changes, developing REST APIs, and

Qualifications

• Proficient in Java backend development for enterprise apps.
• Experience with Hadoop ecosystem including HDFS and related tools.
• Strong background in distributed data platforms and batch processing.
• Proficient in Spring Boot/Spring Framework.
• Experience building REST APIs and backend integrations.
• Familiarity with Linux and shell scripting.
• Version control with Git/Bitbucket and project tracking with Jira.
• Able to troubleshoot, tune performance, and provide production support.
• Experience with storage platform migration or modernization is a plus.

Responsibilities

• Develop and enhance Java backend services and APIs.
• Support platform modernization and backend integration efforts.
• Perform testing and validation across units and systems.
• Troubleshoot defects, performance issues, and deployment challenges.
• Assist with deployment activities and post-implementation stabilization.
• Maintain technical documentation and artifacts.
• Collaborate with development, QA, infra, and architecture teams.

Skills

Java backend

Hadoop

Distributed data

Spring Boot

REST API

Linux

Git/Jira

Troubleshooting

Migration/ modernization

Tools

Git

Bitbucket

Jira

Job description

Salary: Up to SGD 8000

We are seeking an experienced Backend Engineer with strong Java and Hadoop expertise to support a Hadoop data layer modernization initiative. The successful candidate will be responsible for application enhancements, backend integration, platform migration activities, testing support, troubleshooting, and production stabilization within a distributed data processing environment.

Project Goals

1. Support application modernization and platform transition activities.
2. Ensure application stability, compatibility, and performance throughout the project lifecycle.
3. Identify, diagnose, and resolve technical issues arising from platform changes.
4. Implement required backend enhancements and remediation work.
5. Validate application functionality through testing and quality assurance activities.
6. Support successful deployment and operational readiness.

Project Scope

The project primarily involves:

1. Impact Assessment
2. Analyze existing application components, services, and batch processes to identify areas requiring modification.
3. Application Enhancement & Remediation
4. Design and implement code changes to support evolving platform requirements while preserving existing business functionality.
5. Backend Development & Integration
6. Develop and enhance Java backend services, APIs, and integration components.
7. Testing & Validation
8. Perform unit testing, integration testing, system testing, and regression testing to ensure solution quality.
9. Troubleshooting & Issue Resolution
10. Investigate and resolve application defects, performance issues, and deployment challenges.
11. Deployment & Production Support
12. Support deployment activities, release validation, and post-implementation stabilization.
13. Documentation
14. Maintain technical documentation, implementation artifacts, and operational procedures.
15. Collaboration
16. Work closely with development, QA, infrastructure, and architecture teams to ensure successful delivery.

Project Milestone

1. Successful completion of development of project objectives.
2. Successful completion of regression, considering both functional and performance testing
3. Support and follow through all deployment milestones.
4. Complete technical documentation and knowledge transfer.

Project Details

1. Application: Enterprise Java Application with Hadoop Data Storage
2. Project Focus: Backend Development, Platform Modernization & Data Platform Integration

Required Skillset:

• Strong Java backend development experience
• Hadoop ecosystem knowledge (HDFS and related technologies)
• Experience working with distributed data platforms and large-scale applications
• Spring Boot / Spring Framework
• REST API development
• Linux / Shell ing
• Git, Bitbucket, Jira
• Troubleshooting, performance tuning, and production support experience
• Experience with storage platform migration or modernization projects is advantageous.