Senior Java Backend Engineer — AWS & Microservices

Optimum Solutions Pte Ltd; Singapore; On-site; SGD 120,000 - 180,000; Full time

Benefits offered by this job

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Job summary

Optimum Solutions Pte Ltd seeks a highly experienced backend developer to design, develop and support production-grade systems. This role collaborates with architects to analyze requirements and implement code changes, while ensuring security and coding standards.

You will perform extensive QA, CI/CD tasks, and assist in testing and deployment phases. The ideal candidate has 8+ years in backend development, strong Java/J2EE, Spring, RESTful APIs, and container orchestration, with cloud and

Qualifications

• Diploma or bachelor’s degree in computer science/engineering or equivalent education.
• Minimum 8 years hands-on backend development delivering production-grade systems.
• Strong experience with AWS-native systems and operations.
• CI/CD pipelines and tools such as Jenkins, Bitbucket, Octopus, Terraform.
• Java, J2EE, SQL/PLSQL, and XML experience (5+ years).
• RESTful APIs, Spring 5.x/Boot/Framework/Security; cloud-based tech and microservices.
• Kafka/IBM MQ/Solace as messaging middleware experience.
• Docker/OpenShift/Kubernetes for containerized apps.
• Good communication, analytical, problem-solving, and teamwork; finance/payments domain a plus.

Responsibilities

• Participate in requirement elicitation and produce technical and operations documentation
• Work with Solution Architect/Technical Lead on 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

Skills

Backend development

Java/J2EE

Microservices

RESTful APIs

Spring Framework

Spring Boot

SQL

XML

Kafka

IBM MQ

Solace

Docker

OpenShift

Kubernetes

Jenkins

Bitbucket

Octopus

Terraform

AWS

SQL/PLSQL

Production support

Education

Diploma or bachelor’s degree in computer science/engineering or equivalent education

Tools

Docker

OpenShift

Kubernetes

Jenkins

Bitbucket

Octopus

Terraform

Kafka

IBM MQ

Solace

Job description

Optimum Solutions Pte Ltd seeks a highly experienced backend developer to design, develop and support production-grade systems. This role collaborates with architects to analyze requirements and implement code changes, while ensuring security and coding standards.

You will perform extensive QA, CI/CD tasks, and assist in testing and deployment phases. The ideal candidate has 8+ years in backend development, strong Java/J2EE, Spring, RESTful APIs, and container orchestration, with cloud and