OPTIMUM SOLUTIONS (SINGAPORE) PTE LTD
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Java Developer
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Summary
Build and maintain secure, scalable Java-based microservices and APIs on AWS, ensuring robust CI/CD, test automation, and production support.
- Degree in Computer Science, Information Systems, Engineering, or a related field.
- Minimum 6 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): o API Gateway / ALB, ECS/Fargate, RDS, S3, CloudWatch/CloudTrail, WAF o Familiarity with CI/CD pipelines and tools such as Jenkins / Bitbucket /Octopus / Terraform (or equivalents).
- Experience in test automation and engineering best practices (unit tests, contract tests, integration tests)
- Solid understanding of API security patterns and implementation: request signing (HMAC/signature validation), Authentication, nonce/timestamp anti-replay, idempotency design, secure secret handling
- Good understanding of open-source libraries, their usage and vulnerability management.
- Strong communication skills and ability to collaborate effectively with cross-functional teams and strong analytical and engineering skills to synthesize information and present status clearly and effectively.
- A self-starter who thrives in a fast-paced environment, able to make decisions and drive execution with minimal supervision.