Job Description

IST/Switch Application Support Specialist

Nair Systems

Free placement
Free placement

Job ID: 644323

22 Oct 2026

Job ID: 644323

22 Oct 2026

Job Location

Doha, Qatar

Experience

5 to 15 years

Qualification Level

Graduate

Job Function

IT - Software

Skillset

IST/Switch, ISO 8583 message configurations, routing tables, BIN/institution setups and stand-in parameters

Preferred Jobseekers

Jobseekers from any country

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Nair Systems is currently looking for IST/Switch Application Support Specialist for our UAE operations

Required Skills & Experience
• Hands-on experience with IST/Switch (FIS) payment switching platform in a production banking environment.
• Knowledge on IST/Switch Active/Active setup with Dual site implementation
• Strong knowledge of ISO 8583 messaging, EFT transaction lifecycle, authorization, clearing and settlement.
• Understanding of card-scheme interfaces and certifications (Visa, Mastercard, and regional switches such as mada / UAESWITCH / GCCNet).
• Experience with HSM, key management, EMV, PCI DSS and payment security standards.
• Proficiency in Unix/Linux, shell scripting, SQL and log analysis.

Key Responsibilities
Production Support (L2/L3)
• Monitor real-time transaction flows, ensuring high availability of the IST/Switch environment.
• Investigate, diagnose and resolve incidents relating to transaction failures, authorization declines, timeouts, reconciliation breaks and interface issues.
• Perform root-cause analysis and drive problem management to prevent recurrence.
• Provide 24x7 on-call / shift-based support and participate in major-incident bridge calls.
BAU Operations
• Execute daily health checks, batch monitoring, end-of-day settlement and reconciliation processes.
• Manage HSM key operations, certificate renewals and card-scheme mandate updates.
• Maintain and tune ISO 8583 message configurations, routing tables, BIN/institution setups and stand-in parameters.
• Handle service requests, user access, and configuration changes through the change-management process.
• Maintain operational documentation, runbooks and knowledge-base articles.
Projects & Enhancements
• Support new card product launches, scheme mandates, interface integrations and switch upgrades/migrations.
• Participate in requirement analysis, solution design, configuration, testing (SIT/UAT) and production cut-over.
• Coordinate deployment activities, release management and post-implementation support.
• Contribute to disaster-recovery testing and business-continuity exercises.

Joining time frame: 2 weeks (maximum 1 month)
Should you be interested in this opportunity, please send your latest resume in MS Word format at the earliest

Company Profile

Nair Systems, is a QFC based, boutique leading edge technology consulting and professional services firm focusing on Digital Banking, Artificial Intelligence, Big Data & Data Analytics, Cyber Security, Blockchain and Cryptocurrency and Robotic Process Automation.

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