# Senior Backend Developer - Payments

**Company:** [Fuku](http://jobs.workable.com/companies/cVzy4Zi49yLx9EZznjyX2v.md)
**Location:** Singapore, Singapore
**Workplace:** on site
**Employment type:** Full-time

[Apply for this job](http://jobs.workable.com/view/6e71969f-0186-497d-8d47-59386881d167)

## Description

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 product, QA, and business teams to deliver reliable, production-grade payment capabilities globally.  
  
What You Bring:  
\- 8+ years of backend development experience with deep exposure to payment systems, switching platforms, and transaction processing environments.  
\- Proven expertise in C++, Linux environments, and scripting (e.g., Korn Shell) within high-availability production systems.  
\- Hands-on experience with Base24, international card scheme integrations, and modern QR payment ecosystems.  
\- Solid understanding of databases (PostgreSQL/MySQL), messaging systems (IBM MQ), and distributed system performance tuning.  
\- Familiarity with POS/EDC, ATM systems, and payment infrastructure across both physical and digital transaction channels.  
  
Why This Role Stands Out:  
Your work will directly power real-world transactions, from retail terminals to online payments, impacting customer experience, system reliability, and business growth. You’ll operate in a high-scale environment with modern infrastructure, solving complex challenges in performance, security, and system evolution.  
  
Contact:  
If you’re interested in building payment systems where scale, speed, and reliability truly matter, let’s connect. Reach out to Naveen at naveen.vasudevan@tangspac.com