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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
- 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
- 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
Key Skills
Ranked by relevance
aws
java
microservices
cloud
spring boot
grafana
gitlab
cicd
ecs
identity and access management
infrastructure as code
high availability
containerization
docker
oracle
sql
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- Posted
- Jul 06, 2026
- Type
- Temporary
- Level
- Mid-Senior
- Location
- Singapore
- Company
- Unison Group
Industries
IT Services
IT Consulting
Categories
Information Technology
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3 roles aligned with this opportunity
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Data Scientist
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