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Senior Java Developer
OPTIMUM SOLUTIONS (SINGAPORE) PTE LTD
Software EngineeringSenior ExecutiveContractIslandwide, Singapore
Job Description
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 Java backend development delivering production-grade systems (microservices, APIs, event processing, web-portal, production support).
• Strong experience with cloud 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
Listing closes 5 Dec 2026.
Apply directly through the original listing. The employer’s page has the latest application details.