Senior Software Engineer (MEPS+) (Perm/Contract)

Monetary Authority of Singapore; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

The Monetary Authority of Singapore (MAS) is hiring a Software Engineer in the CBD payment team to ensure the MEPS+ system's quality and reliability. You will focus on code review, security assessment, test automation, release verification, and contingency planning.

The role involves collaborating with vendors and operations, supporting audits, and building scalable, secure payment processing capabilities within MAS. On-call readiness and strong problem solving are expected.

Qualifications

• Proven experience designing and implementing Java applications.
• Hands-on with automated testing frameworks (Selenium, Watermelon, or similar).
• Production support experience and root-cause analysis skills.
• Understanding of secure coding practices and vulnerability assessment.
• Experience with J2EE, JBoss EAP, SQL/Oracle, Git, and shell scripting.
• Experience working on-call for production systems.

Responsibilities

• Code Review Gate: review internal/vendor enhancements against designs and standards.
• Security & Scan Validation: assess findings, validate fixes, and remediation.
• Technical Solution Review: ensure solutions meet design, performance, and security needs.
• Compliance and Contingency Planning: prepare task lists and assist audit responses.
• Test Automation Maintenance: maintain/extend MEPS+ test scripts and frameworks.
• Release Verification: verify MEPS+ releases prior to production deployment.
• SLI/SLO Contribution: define system SLIs/SLOs with operations/SRE.
• L2 Production Incident Response and post-incident reviews.

Skills

Java

SQL

Shell scripting

On-call support

Code review

Test automation

Docker & Kubernetes

Security awareness

J2EE/JBoss

Git

Tools

Selenium

Watermelon

Docker

Kubernetes

Git

Oracle DB

Job description

What the role is:

You will join the Central Banking & Devt Platforms (CBD) payment team as a Software Engineer responsible for ensuring technical quality and operational reliability of the MAS Electronic Payment System (MEPS+) and related payment processing systems.

The role focuses on code review, assessment and validation of security findings, oversight of test automation, enhancement-release verification, audit support and contingency preparedness.

What you will be working on:

What You Will Be Responsible For:

A. Code Review & Quality Assurance

• Code Review Gate: Conduct code reviews of internal and vendor enhancements/fixes. Review fixes and enhancements against approved designs and applicable quality and security standards, document findings, and recommend acceptance or remediation in accordance with the agreed governance process

• Security & Scan Validation: Lead weekly review of code scan findings (static analysis, security scanning). Assess impact; identify false positives; validate fixes. Review security findings from source code reviews and penetration tests; validate remediation.

• Technical Solution Review: Validate that technical solutions for new enhancements meet approved design, performance, and security requirements.

• Compliance and Contingency Planning: Develop Software Engineer task lists for contingency exercises and participate in the execution of relevant drills. Prepare and provide relevant technical information and evidence in response to audit requests.

B. Testing & Test Automation

• Test Automation Maintenance: Maintain and enhance MEPS+ test automation scripts (Selenium/Watermelon). Revamp test suites as needed; add new test coverage; troubleshoot test failures; evolve automation framework.

• Release Verification: Verify MEPS+ enhancement releases (semi-annual) before production deployment.

• SLI/SLO Contribution: Work with operations and SRE to define system SLIs and SLOs (e.g., transaction latency, error rate, availability targets).

C. Production Troubleshooting & Incident Response

• L2 Production Incident Response: Respond to production incidents. Investigate errors, exceptions, alerts, and system warnings. Troubleshoot issues; coordinate with vendors on urgent fixes; elevate when needed. Expected on-call rotation: [specify, e.g., 1 week per month].

• Error & Exception Analysis: Diagnose root causes of production issues. Provide detailed incident analysis; recommend fixes or escalation path.

• Post-Incident Review: Participate in post-incident reviews; capture learnings; recommend process improvements.

D. Technical Specifications & Standards

• Code Quality Standards: Contribute to defining code review standards, testing requirements, and quality metrics for MEPS+.

What we are looking for:

What We Are Looking For

Core Technical Requirements

• Backend Development & Code Review: Proven experience designing and implementing Java applications. Strong Java, SQL, and shell scripting skills. Comfortable conducting code reviews against design specifications and security standards.

• Automated Testing: Hands-on experience with automated testing frameworks (Selenium, Watermelon, or similar). Understanding of testing strategies (unit, integration, functional, performance, security). Experience maintaining and evolving test automation frameworks.

• Production Support & Troubleshooting: Experience supporting production systems. Strong debugging and root-cause analysis skills.

• Security & Code Quality: Understanding of secure coding practices. Familiarity with code scanning tools and vulnerability assessment. Ability to evaluate and validate security findings.

• Enterprise Technologies: Hands-on experience with J2EE, JBoss EAP, SQL/Oracle Database, Git, shell scripting.

Important Experience

• Experience working on-call for production systems, incident triage and escalation.

• Experience defining and enforcing quality standards with strong testing discipline.

• Experience working with development teams, vendors, operations, Managing and prioritizing tasks.

• Experience with payment processing, securities settlement, or related financial systems.

• Familiarity with large-scale payment systems architecture and integration patterns.

• Understanding of modern backend architectures and API design principles.

• Familiarity with Docker and Kubernetes concepts

• Java Developer, AWS, or related certifications would be an advantage

Who You Are

• Detail-Oriented: Meticulous about code quality, test coverage, and production reliability. Comfortable with rigorous standards.

• Problem-Solver: Natural investigator; thrives in debugging complex issues. Comfortable with ambiguity; persistent troubleshooter.

• Reliable & Responsive: Dependable on-call engineer; comfortable responding to urgent production issues at any time.

• Collaborative: Strong communication with peers, vendors, and operations teams. Comfortable escalating issues and coordinating fixes.

• Driven by Quality: Intrinsically motivated to maintain high technical and operational standards. Takes pride in robust systems.

Candidates may be considered for a permanent or 2-year contract roles. All applicants will be notified on whether they are shortlisted or not within 4 weeks of the closing date of this job posting.

As part of the shortlisting process for this role, you may be required to complete a medical declaration and/or undergo further assessment.

About Monetary Authority of Singapore

MAS is the central bank of Singapore. Our mission is to promote sustained non-inflationary economic growth, and a sound and progressive financial centre.