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Open nowPosted 15 days ago

Senior Java Developer

MyCareersFuture94,028 open roles

Pay
SGD 5,000 – SGD 7,000 a month
Where
Central, Singapore
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Your applicationOpen nowSenior Java DeveloperMyCareersFuture · Central, Singapore

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This job: posted 15 days ago

The posting

Position Summary

We are seeking an experienced Senior Java Developer to design, develop, and maintain backend applications using Java and the Spring Boot framework for the UPOS & DA application portfolio. The role contributes to the delivery of projects and change requests while ensuring the reliability, performance, security, and maintainability of existing applications.

The successful candidate will work closely with developers, technical leads, product owners, business stakeholders, QA, DevOps, cybersecurity, and production support teams to translate business requirements into secure, scalable, and reliable technical solutions. The candidate will also provide technical guidance to other developers, support application modernization, troubleshoot production issues, and implement bug fixes and continuous improvements.

The ideal candidate will demonstrate strong expertise in Java backend development, Spring Boot, RESTful APIs, distributed systems, and database technologies. Knowledge of online payment transaction flows and experience with high-volume, mission-critical payment platforms will be a distinct advantage.

Responsibilities:

  • Lead and participate in requirement analysis, solution design, technical estimation, development planning, and implementation for UPOS & DA application initiatives.
  • Translate business and user requirements into clear functional and technical specifications that meet business, security, performance, and operational requirements.
  • Design, develop, test, and maintain secure, scalable, low-latency, and highly available backend applications using Java, Spring Boot, RESTful APIs, Solace JMS, and database technologies.
  • Develop new business features and reusable software components in accordance with approved technical specifications, coding standards, secure development practices, and organizational policies.
  • Contribute to application modernization and migration initiatives, including legacy application transformation, Java and Spring Boot framework modernization, and deployment to RHEL, container, or cloud environments.
  • Review application architecture, source code, database design, interfaces, and deployment approaches to ensure quality, maintainability, performance, resilience, and operational readiness.
  • Conduct code and design reviews, provide technical guidance to developers, and promote software engineering best practices and knowledge sharing within the team.
  • Develop and maintain accurate technical documentation, including solution designs, technical specifications, interface specifications, application flows, unit test plans, deployment procedures, and operational support guides.
  • Support unit testing, application integration testing, system testing, user acceptance testing, release preparation, production deployment, and post-implementation verification.
  • Work closely with QA, DevOps, cybersecurity, infrastructure, production support, business stakeholders, vendors, banks, and payment schemes to coordinate application delivery and resolve technical dependencies.
  • Troubleshoot application issues through log analysis, performance analysis, and root cause investigation across development, testing, and production environments.
  • Provide application support before and after production deployment, implement bug fixes, and ensure preventive and corrective actions are completed promptly.
  • Ensure solutions comply with PCI-DSS, cybersecurity controls, secure coding practices, data protection requirements, organizational policies, and applicable payment scheme mandates.

Requirements:

  • Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related discipline.
  • Minimum 6 to 8 years of relevant application development experience, including hands-on involvement across the full software development lifecycle and experience operating in a senior developer or technical lead capacity.
  • Strong proficiency in Java 17 or later, server-side Java technologies, Spring Framework, and Spring Boot.
  • Strong experience designing and developing microservices, RESTful APIs, web services, distributed applications, and service-oriented architectures.
  • Hands-on experience with technologies such as Linux or RHEL, Spring Boot, Solace JMS, MySQL or PostgreSQL, SSL/TLS, and JSON-based interfaces.
  • Good understanding of object-oriented design, software design patterns, secure coding practices, unit testing, and application performance optimization.
  • Demonstrated experience developing or supporting low-latency, high-throughput, highly available, and business-critical transaction processing systems.
  • Experience with software development methodologies, including Agile and Waterfall, and engineering tools such as Git, Jenkins, JIRA, Maven or Gradle, and automated testing frameworks.
  • Experience with CI/CD pipelines, application monitoring, log analysis, observability, production deployment, incident resolution, and root cause analysis.
  • Experience with container or cloud deployments and technologies such as Docker, Kubernetes, OpenShift, or AWS will be an advantage.
  • Experience in payment systems, online payment transaction flows, transaction switching, retail POS, e-commerce, card authorization, or payment gateway integration is strongly preferred.
  • Working knowledge of PCI-DSS, payment security controls, encryption, cryptographic concepts, SSL/TLS, access control, and audit requirements will be an advantage.
  • Strong analytical, problem-solving, communication, stakeholder-management, and technical leadership skills.
  • Proactive and collaborative team player who can work independently with minimal supervision and perform effectively in a dynamic, fast-paced, and regulated environment.
  • Ability to manage multiple priorities, guide other developers, and support the delivery of business-critical applications.
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