Soufiane Mellak

Senior Support Engineer

Expert in payment systems, incident resolution and compliance with Visa, Mastercard, UPI & Amex.

Transaction Preview

{ status: "approved", code: "00", network: "VISA", amount: 100 }

About

As a Senior Support Engineer, I handle critical payment incidents and ensure high-quality delivery of solutions in production environments. I specialize in analyzing transaction failures, debugging APIs and validating fixes using internal simulation tools designed to reproduce real-world payment scenarios. I also manage compliance with global payment networks including Visa, Mastercard, UPI and American Express by integrating updates and validating their behavior to ensure full compliance.

Projects

Payment Simulation Platform

Internal tool designed to simulate payment transactions and validate fixes before production deployment.

  • Transaction simulation (success / failure)
  • Network compliance validation
  • ISO response codes handling

Support Analysis Dashboard

Dashboard enabling faster incident resolution through API response analysis and log debugging.

  • API error analysis
  • Log visualization
  • Faster troubleshooting

Experience

Senior Support Engineer

  • Resolve critical production incidents impacting payment systems
  • Perform deep analysis and root cause identification
  • Validate fixes using internal simulation tools
  • Ensure compliance with Visa, Mastercard, UPI and Amex
  • Deliver high-quality tested solutions

Resume

Contact

mellaksoufiane4@gmail.com

© 2026 — Soufiane Mellak — Senior Support Engineer