Java Developer

Optimum Solutions • Java • 8 days ago
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Salary
$47k – $75k per year (gross)
Location
In office (Singapore)
Seniority
Senior · 6+ years exp
Employment
Contractor

First seen by Alion on Oct 16, 2026.

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Optimum Solutions

Optimum Solutions is an IT services and outsourcing company headquartered in Singapore that provides software engineering, application development and maintenance, data and analytics, cloud and infrastructure, testing and global capability centre services. Founded in 1997, it reports more than 4,000 employees across offices and delivery centres in nine countries, including India and China, and supplies contract IT staff to banks and global technology clients. Its Singapore listings cover Java and .NET developers, DevOps and GenAI engineers, business analysts, scrum masters, UX designers, compliance associates and contract privacy support and AI video roles.
theoptimum.net • HQ: Singapore • IT Resellers & VARs • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1997
  • 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.

Skills

Collaborate With Engineers, Jenkins, Cloudwatch, Bitbucket, AWS, Computer Science, Microservices Design, CI/CD, procedures supervision, Authentication, ECS, Engineering Skills, Integration Testing, Java, Test Automation Tools, API, Backend Development, API Security, Threat and Vulnerability Management

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