Senior Backend Developer - Payments

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
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