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Senior Java Backend Developer
Unison Group · Singapore
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Job description
Role Overview We are looking for an experienced Senior Java Backend Developer with strong expertise in Java 17+, Spring Boot 3.x, REST API development, and Microservices Architecture . The ideal candidate will be responsible for designing, developing, deploying, and supporting scalable backend applications in a cloud environment. The role requires hands-on experience with AWS services, CI/CD pipelines, database technologies, and production support activities.
Key Responsibilities
- Design, develop, and maintain high-performance backend applications using Java 17+ and Spring Boot 3.x.
- Develop and integrate scalable RESTful APIs following industry best practices.
- Build and maintain applications based on Microservices Architecture.
- Implement secure, reliable, and scalable backend solutions.
- Work with AWS cloud services including ECS, EC2, RDS, and CloudWatch for application deployment, monitoring, and troubleshooting.
- Develop and manage CI/CD pipelines using GitLab and Infrastructure as Code (IaC) practices.
- Collaborate with DevOps teams to automate build, deployment, and release processes.
- Work with Oracle and SQL databases, including database design, queries, optimization, and troubleshooting.
- Perform code reviews, debugging, performance tuning, and application enhancements.
- Provide Production Support / BAU Support for business-critical applications.
- Manage incidents, perform root cause analysis (RCA), and implement permanent fixes.
- Collaborate with cross-functional teams including QA, DevOps, Product Owners, and Business stakeholders.
Required Skills & Experience
- 6+ years of experience in Java Backend Development.
- Strong hands-on experience with Java 17+.
- Extensive experience with Spring Boot 3.x.
- Strong understanding of REST API development and integration.
- Proven experience working with Microservices Architecture.
- Hands-on experience with AWS services:
- Amazon ECS
- Amazon EC2
- Amazon RDS
- Amazon CloudWatch
- Experience with GitLab CI/CD pipelines and automation.
- Knowledge of Infrastructure as Code (IaC) concepts.
- Strong SQL skills with experience in Oracle databases.
- Experience in production application support and incident management.
- Good understanding of Agile development methodologies.
- Strong analytical and problem-solving skills.
Good to Have
- Experience with container technologies such as Docker/Kubernetes.
- Knowledge of cloud security best practices.
- Experience with monitoring and logging tools.
- Exposure to enterprise-scale applications and high-availability systems.
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