Soufiane Mellak

Senior Support Engineer

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

VisaMastercardAmexUPIISO 8583PowerCard

View Projects

iso8583_engine_v3.log

System Ready

Awaiting MTI 0100 Request...

Production Monitor: Secure

100%

Compliance

L2/L3

Critical Support

99.9%

Uptime Managed

3+ Years

Experience

About

As a Senior Support Engineer at HPS, 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 by integrating updates and validating their behavior to ensure full compliance.

Network Gateways

VISA NET● Operational

MASTERCARD● Operational

AMEX / UPI● Operational

POWERCARD L2● Standby

Technical Stack

Payment Protocols

ISO 8583 •JSON API •EMV •PCI-DSS

Support & Analysis

SQL Queries •Log Debugging •Wireshark •Postman

Banking Solutions

PowerCard •Switching •Clearing •Authorization

Monitoring

Splunk •ELK Stack •Grafana •AppDynamics

Core Projects

Payment Simulation Platform

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

#Transaction simulation#Network compliance#ISO response codes

Support Analysis Dashboard

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

#API error analysis#Log visualization#Troubleshooting

Professional Experience

Senior Support Engineer @ HPS

2025 — PRESENT

▹Team leadership: Mentoring and assisting team members in their daily technical tasks
▹Supervising critical production incident resolutions and root cause analysis
▹Ensuring high-level compliance and delivery standards for payment solutions
▹Coordinating complex support workflows and technical escalations