O
Optimum Solutions Pte Ltd
Java Software Engineer
Skills
SQL QueriesDockerJavaTesting & QAMicroservicesSpring BootKafkaBitbucketJenkinsAWSKubernetesTerraform
1 month ago
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Important information
Contract type:
Freelance / Contract
Location:
Singapore
Work mode:
Onsite
Published on:
7 September 2026
What they need
Responsibilities :
- Participate in the requirement elicitation and produce the required technical and operations documentation
- Work with Solution Architect/Technical Lead on the analysis and design of the code changes according to the finalized requirement specifications
- Perform code changes and test the system according to the requirements specifications
- Ensure work performed comply to coding and security standards, and corporate processes
- Perform quality assurance (QA) activities such as unit testing, system testing and code review
- Participate in the system integration testing by rendering support to the Test Team and resolving issues reported.
- Provide support to internal and external parties during the testing stages
- Provide support to customers during acceptance testing and post-cutover implementation.
- Assist in the development of training materials and conducting of presentation
Requisites :
- Diploma or bachelor’s degree in computer science/engineering or equivalent education
- Minimum 8 years hands-on experience in backend development delivering production-grade systems (microservices, APIs, event processing, web-portal, production support).
- Strong experience with AWS-native systems and operations (any of the following):
- API Gateway / ALB, ECS/Fargate, RDS, S3, CloudWatch/CloudTrail, WAF
- Familiarity with CI/CD pipelines and tools such as Jenkins / Bitbucket / Octopus / Terraform (or equivalents).
- Good technical knowledge with at least 5 years of hands-on experience in Java, J2EE, SQL/PLSQL, and XML.
- Experienced with RESTFul APIs, Spring 5.x, Spring Boot, Spring Framework, Spring Security, Cloud-Based technologies and Micro-services, including Messaging Middleware such as Kafka/IBM MQ/Solace.
- Experienced with application running in container platform (Docker, OpenShift, Kubernetes).
- Good verbal and written communication skills
- Demonstrate good analytical, problem solving and decision-making skills
- Good team player and positive attitude
- Domain knowledge and experience in financial industry/payments systems is a plus
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