JAVA Backend Developer with API Expertise

Unison Group· Manish
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📍 Singapore, Singapore, SingaporeTemporary

About this role

We are looking for a Senior Java Backend Engineer to support and enhance our API and microservices ecosystem in a cloud-native AWS environment. This role focuses on BAU (Business-As-Usual) support, ensuring system stability, performance, and continuous improvement of backend services.

• Provide BAU support for Java-based microservices and APIs, ensuring high availability and reliability

• Design, develop, and maintain scalable microservices using Java (17+) and Spring Boot (3.x)

• Manage and support cloud infrastructure on AWS (ECS, EC2, RDS)

• Monitor system performance and troubleshoot issues using tools like Grafana and CloudWatch

• Implement and maintain CI/CD pipelines using GitLab, AWS CodeCommit, and CodePipeline

• Collaborate with cross-functional teams to resolve production issues and

deploy enhancements

• Support integration with identity and access management systems (Okta)

• Work with MuleSoft for API integrations and middleware support

• Ensure adherence to best practices in coding, security, and performance optimization

• Participate in incident management, root cause analysis, and continuous improvement initiatives

• Experience with containerization and orchestration (Docker, Kubernetes)

• Exposure to security best practices in cloud environments

• Familiarity with Agile/Scrum methodologies

• Strong problem-solving and analytical skills

• Ability to work in a fast-paced BAU support environment

 

ROLE PROFILE

• Excellent communication and stakeholder management skills

• Proactive mindset with ownership of production system

• 8+ years of experience in Java backend development

• Strong expertise in Java 17+ and Spring Boot 3.x

• Proven experience in building and supporting microservices and REST/GraphQL APIs

• Hands-on experience with AWS services: ECS, EC2, RDS

• Experience with Infrastructure as Code (IaC)

• Proficiency in CI/CD pipelines using GitLab, AWS CodeCommit, and CodePipeline

• Strong knowledge of SQL, Oracle and relational databases

• Experience with monitoring and logging tools such as Grafana and AWS CloudWatch

• 3+ years of experience with Okta for authentication/authorization

• 3+ years of experience with MuleSoft for API integration

Frequently Asked Questions

Is the salary disclosed for the JAVA Backend Developer with API Expertise position at Unison Group?
The salary for this JAVA Backend Developer with API Expertise role at Unison Group is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the JAVA Backend Developer with API Expertise position at Unison Group located?
This JAVA Backend Developer with API Expertise role at Unison Group is based in Singapore, Singapore, Singapore. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the JAVA Backend Developer with API Expertise role at Unison Group full-time or part-time?
This is listed as a Temporary position. It is posted as a JAVA Backend Developer with API Expertise role in the Manish department at Unison Group.
Which team or department does the JAVA Backend Developer with API Expertise at Unison Group belong to?
This JAVA Backend Developer with API Expertise position is part of the Manish department at Unison Group. See the full job description for more information about the team structure and responsibilities.
How do I apply for the JAVA Backend Developer with API Expertise position at Unison Group?
Click the "Apply Now" button on this page. You will be redirected to Unison Group's official application portal hosted on workable where you can submit your application directly.
When was the JAVA Backend Developer with API Expertise job at Unison Group posted?
This JAVA Backend Developer with API Expertise position at Unison Group was posted on Jul 6, 2026. Apply as soon as possible — early applications are often reviewed first.
JAVA Backend Developer with API Expertise
Unison Group
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