KGiSL
Back End Developer
KGiSLSingapore6 days ago
ContractInformation Technology

Peferred Nationality: Singaporean/Singapore PR

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.


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.

Key Skills

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