Senior Java Developer

Optimum SolutionsSingaporemycareersfuturepublished 09/25/2026
Must-have:JavaDockerKubernetesCloudBackendQA/TestCI/CDMicroservicesSecurityLead
Nice-to-have:FinTech

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