Senior Backend Engineer - Real-Time Payments

MasterCard Worldwide; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Mastercard Worldwide in Singapore seeks a Senior Software Engineer within the Realtime Payments (RTP) program to design, build, test, and operate high‑quality backend services enabling instant payments across markets.

You will own features end‑to‑end, apply patterns such as microservices and REST APIs, ensure reliability, and contribute to production readiness, logging, metrics, and on‑call support.

Qualifications

• Strong hands-on experience developing enterprise backend systems.
• Solid understanding of distributed systems fundamentals.
• Experience working in production environments with uptime and reliability expectations.

Responsibilities

• Design and implement software components and services based on defined requirements and architectures.
• Write clean, efficient, and testable code aligned with Mastercard engineering standards.
• Build software with operational concerns in mind, including observability and failure handling.
• Collaborate with Product, QA, and DevOps to ensure quality and smooth releases.
• Contribute to continual improvements in performance, reliability, and maintainability.

Skills

Distributed systems

Production experience

Agile delivery

Mentoring

Tools

Java/Spring

APIs

Messaging systems

Data persistence

CI/CD

Version control

Cloud/containers

Job description

Mastercard Worldwide in Singapore seeks a Senior Software Engineer within the Realtime Payments (RTP) program to design, build, test, and operate high‑quality backend services enabling instant payments across markets.

You will own features end‑to‑end, apply patterns such as microservices and REST APIs, ensure reliability, and contribute to production readiness, logging, metrics, and on‑call support.