OP

Senior Java Developer

Optimum Solutions (Singapore) Pte Ltd.
Singapore ₹7K-11K LPA Posted 25 Sept 2026
FULL TIME
Microservices
Banking
Development
Java
Cloud
+1 more

Job Description

Key Responsibilities

  • Engage in requirement gathering and create necessary technical and operational documentation.
  • Collaborate with the Solution Architect/Technical Lead to analyze and design code modifications based on finalized requirement specifications.
  • Implement code changes and conduct system testing in accordance with the specified requirements.
  • Ensure that all work adheres to established coding and security standards, as well as corporate processes.
  • Carry out quality assurance (QA) tasks, including unit testing, system testing, and code reviews.
  • Contribute to system integration testing by supporting the Test Team and addressing reported issues.
  • Assist both internal and external stakeholders during the testing phases.
  • Support customers throughout acceptance testing and post-cutover implementation.
  • Help develop training materials and deliver presentations.

Requisites:

  • Diploma or bachelor's degree in computer science/engineering or a related field.
  • At least 8 years of hands-on experience in backend development, delivering production-grade systems (including microservices, APIs, event processing, web portals, and production support).
  • Strong experience with AWS-native systems and operations, including 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 their equivalents.
  • Solid technical expertise with a minimum of 5 years of hands-on experience in Java, J2EE, SQL/PLSQL, and XML.
  • Experience with RESTful APIs, Spring 5.x, Spring Boot, Spring Framework, Spring Security, cloud-based technologies, and microservices, including messaging middleware such as Kafka, IBM MQ, or Solace.
  • Experience with applications operating on container platforms such as Docker, OpenShift, or Kubernetes.
  • Strong verbal and written communication skills.
  • Proven analytical, problem-solving, and decision-making abilities.
  • Ability to work effectively in a team and maintain a positive attitude.
  • Domain knowledge and experience in the financial industry or payments systems is advantageous.

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