Senior Backend Developer – Payments

Work Location: Singapore

Role Overview:
Join our team to design and scale mission-critical payment systems that power millions of transactions across international card networks, real-time QR payments, and high-volume switching platforms. Your work will support both retail POS and e-commerce environments, where every millisecond impacts revenue, reliability, and trust.

What You’ll Do:
- Design and build high-performance backend systems supporting Visa, Mastercard, Amex, and UPI payment integrations at scale.
- Architect secure, scalable solutions across authorization, clearing, settlement, and merchant onboarding workflows end-to-end.
- Lead modernization initiatives, migrating legacy payment platforms to Linux RHEL or cloud-based architecture environments.
- Optimize switching systems for ultra-high transaction volumes, ensuring low latency, resilience, and consistent system uptime.
- Collaborate with produc...