Java Software Engineer

Optimum Solutions Pte Ltd; Singapore; On-site; SGD 80,000 - 120,000; Full time

Job summary

Optimum Solutions Pte Ltd is seeking a Senior Backend Developer in Singapore. The role requires a candidate with a diploma or degree in Computer Science/Engineering and at least 8 years of hands-on experience in backend development. Proficiency in AWS, Java, J2EE, and CI/CD practices is essential. Responsibilities include requirement elicitation, system testing, and supporting customers during acceptance testing. A collaborative mindset and expertise in microservices and financial industry systems are preferred.

Qualifications

• Minimum 8 years hands-on experience in backend development delivering production-grade systems.
• Strong experience with AWS-native systems and operations.
• Good technical knowledge with at least 5 years of hands-on experience in Java, J2EE, SQL/PLSQL, and XML.

Responsibilities

• Participate in the requirement elicitation and produce technical documentation.
• Work with Solution Architect on analysis and design of code changes.
• Perform code changes and test the system according to requirements.

Skills

Backend development

Java

AWS

CI/CD

Microservices

Education

Diploma or bachelor’s degree in computer science/engineering

Tools

Docker

Kubernetes

Terraform

Jenkins

Spring Framework

Job description

Responsibilities

• 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