Senior Backend Developer (6 months)

The NETS Group is a leading payments services group, enabling digital payments for merchants, consumers and banks across the entire payments value chain. 
 

The Group operates Singapore’s national debit scheme enabling customers of DBS Bank/POSB, HSBC, Maybank, OCBC Bank, Standard Chartered Bank and UOB to make payments using their ATM cards or mobile devices at more than 130,000 acceptance points in the country as well as online payments.

Team and Position Summary

We are seeking a highly experienced Senior Backend Developer to join our Backend payment system team. The ideal candidate will have a strong background in payment systems, particularly in international credit cards, both present (retail POS) and card not present (e-commerce) platforms and familiar with the latest QR payment. This role demands deep technical expertise in backend development, payment gateway integration, and system optimization for high-volume transaction environments.

This position is ideal for a senior developer who thrives in a fast-paced, collaborative environment and is passionate about creating robust systems that enhance user experience and drive NETS business growth.

Key Responsibilities

• Lead the design and development of backend systems for international payment gateway integrations (e.g., Visa, Mastercard, Amex, UPI).
• Architect and implement secure, scalable app features for payment authorization, settlement, and onboarding.
• Drive migration and implementation projects on Linux RHEL or Cloud, replacing legacy systems.
• Develop secure and scalable application for payment authorization, settlement, and onboarding processes.  
• Collaborate with cross-functional teams including QA, frontend, and business stakeholders to deliver robust solutions.
• Ensure compliance with PCI-DSS, other payment security standards and international card scheme mandates.
• Optimize performance and reliability of switching systems and backend services.
• Provide technical leadership and mentorship to junior developers and support teams.
• Document system architecture, integration flows, and technical specifications.

 
Requirements

Education and Experience

• Bachelor’s degree in computer science, Software Engineering, or related field.
• 12+ years of experience in backend development, with a strong focus on payment systems and switching platforms.

Skills and Knowledge

• Proficiency in C++, Korn Shell Script, and Linux-based development.
• Strong experience with Base24-eps, Visa/Mastercard compliance, and QR integration.
• Hands-on experience with PostgreSQL/MySQL and IBM MQ upgrades.
• Familiarity with Open System RHEL, POS/EDC, and ATM configurations.
• Excellent problem-solving skills and ability to manage production issues effectively.
• Strong communication skills and ability to work collaboratively across teams.

Network for Electronic Transfers (Singapore) Pte Ltd.