Java Software Engineer

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

• 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 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):
• - 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