Senior Software Engineer (MEPS+) - Payment Systems

About the role

The Central Banking & Devt Platforms (CBD) payment team is hiring a Senior Software Engineer to ensure the technical quality and operational reliability of the MAS Electronic Payment System (MEPS+) and related payment processing systems. The role covers code review, security validation, test automation, release verification, audit support and contingency preparedness. Candidates may be considered for a permanent or 2-year contract position.

Key responsibilities

• Conduct code reviews of internal and vendor enhancements and fixes against approved designs and quality/security standards, and recommend acceptance or remediation.
• Lead weekly review of code scan findings (static analysis, security scanning), assess impact, identify false positives and validate fixes from source code reviews and penetration tests.
• Validate technical solutions for new enhancements against design, performance and security requirements.
• Maintain and enhance MEPS+ test automation scripts (Selenium/Watermelon), revamp test suites, add coverage and troubleshoot failures.
• Verify semi-annual MEPS+ enhancement releases before production deployment.
• Work with operations and SRE to define system SLIs and SLOs.
• Respond to production incidents, investigate errors and exceptions, coordinate urgent vendor fixes, and take part in post-incident reviews.
• Develop task lists for contingency exercises, take part in drills, and provide technical evidence for audit requests.

Required profile

• Proven experience designing and implementing Java applications, with strong debugging and root-cause analysis skills.
• Hands-on experience with automated testing frameworks (Selenium, Watermelon or similar) and maintaining test automation frameworks.
• Experience supporting production systems, including on-call incident triage and escalation.
• Experience defining and enforcing quality standards with strong testing discipline.
• Experience working with development teams, vendors and operations, and managing and prioritising tasks.
• Experience with payment processing, securities settlement or related financial systems, and familiarity with large-scale payment systems architecture.
• Understanding of modern backend architectures and API design principles.

Required skills

• Java, SQL and shell scripting
• J2EE, JBoss EAP, SQL/Oracle database, Git
• Selenium, Watermelon or similar test automation tools
• Docker and Kubernetes concepts
• Knowledge of secure coding practices and code scanning tools

Candidates with a Java developer, AWS or related certification are an advantage. Applicants are notified of their shortlisting status within 4 weeks of the closing date; a medical declaration and/or further assessment may be required during shortlisting.