# API BAU Support Engineer

> Unison Group · Singapore, Singapore · — · Posted 2026-06-16

**Workplace:** on_site

**Department:** Bharat

## Description

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

## Requirements

• 5+ years of experience in Java backend development

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

• 3+ years of experience with MuleSoft for API integration

• 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

## Apply

[Apply at Unison Group](https://apply.workable.com/unisongroup/j/F534968471/apply)

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