Senior Payments Support Engineer – Cards & CORTEX

Company Description

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Crew is a Saudi-based leader in Quality Engineering, Digital Assurance, and Digital Engineering, providing scalable and innovative solutions to enterprises across the region. With a team of over 700 professionals across KSA, UAE, Jordan, Egypt, India, and Europe, Test

Crew supports industries like Banking, Government, Telecom, Aviation, Retail, and Sports

Tech. The company specializes in digital transformation, quality governance, cloud modernization, and observability, delivering end-to-end Quality Engineering services powered by global best practices. Trusted by leading organizations, Test

Crew empowers complex, mission-critical programs and ensures reliability in high-availability environments through strategic partnerships and managed services.

We are seeking an experienced Payments Support Engineer to manage and support card transaction systems in a high-availability production environment. This role focuses on ensuring system stability, resolving complex issues, and supporting end-to-end payment processes including authorization, clearing, settlement, and reconciliation.

The ideal candidate will bring strong production support experience within banking/payments, combined with deep technical expertise in Oracle PL/SQL and card systems such as CORTEX or IST.

Role Overview

We are seeking an experienced Payments Support Engineer to manage and support card transaction systems in a high-availability production environment. This role focuses on ensuring system stability, resolving complex issues, and supporting end-to-end payment processes including authorization, clearing, settlement, and reconciliation.

The ideal candidate will bring strong production support experience within banking/payments, combined with deep technical expertise in Oracle PL/SQL and card systems such as CORTEX or IST.

Key Responsibilities

Production Support & Operations

• Provide L2/L3 production support for card transaction systems, ensuring high availability and minimal downtime

• Monitor system performance and conduct regular health checks for CORTEX and related applications

• Diagnose and resolve complex production issues within card systems and payment flows

• Manage incidents, prioritize issues, and ensure adherence to SLA requirements

Card Systems & Payments Processing

• Support card issuance, transaction authorization, clearing, and settlement processes

• Troubleshoot issues across CORTEX, IST (ATM switch), and merchant settlement systems

• Ensure smooth operation of the end-to-end payment lifecycle

Reconciliation & Data Integrity

• Perform and support transaction reconciliation, clearing, and settlement activities

• Identify discrepancies and ensure data accuracy across systems

• Analyze large transaction datasets to resolve mismatches and improve processes

Collaboration & Vendor Management

• Work closely with internal teams (IT, operations, business) and external vendors

• Coordinate issue resolution and system improvements across stakeholders

• Support integrations with external payment platforms and partners

Key Requirements

• 7 to 15 years of experience in production support or similar roles within payments or financial services

• Strong hands-on experience in Oracle PL/SQL development and production support

• Proven experience with ATM Switch systems (IST) or CORTEX transaction authorization platforms

Key Skills & Experience

• Payments Domain Expertise

• Strong experience in cards & payments systems

• Deep understanding of authorization → clearing → settlement → reconciliation lifecycle

• Experience with card schemes (Visa, Master

Card, etc.)

• CORTEX & Card Systems

• Hands-on experience with CORTEX platform (issuance & authorization)

• Strong knowledge of transaction flows, integrations, and settlement processes

• Experience with ATM switch systems (IST) and merchant settlement solutions

• Database & Technical Skills

• Advanced expertise in Oracle PL/SQL, including:

• Complex query writing and optimization

• Stored procedures, functions, and packages

• Performance tuning and indexing

• Strong ability to analyze and troubleshoot issues at database level

• Experience handling large transaction datasets

• Production Support & Troubleshooting

• Strong analytical and problem-solving skills

• Experience with:

• Incident management

• System monitoring & log analysis

• Root cause analysis

• Ability to work in high-pressure, mission-critical environments

Preferred Qualifications

• Experience in banking or financial services production environments

• Familiarity with payment security standards and compliance requirements

• Strong communication skills to interact with technical and business stakeholders