* Define target-state architecture for FIS IST across ATM, POS, and digital payment channels
* Establish high availability, active-active, and disaster recovery designs
* Lead architecture blueprints covering transaction routing, authorization, clearing, and settlement flows
* 10+ years in payment switching with deep expertise in FIS IST platform
* Proven experience in enterprise-scale switch architecture and transformation programs
* Strong command over ISO 8583, transaction lifecycle, and routing logic
* Expertise in:
* Distributed systems and microservices architecture
* API-first and event-driven designs
* Hybrid/cloud infrastructure models
* Strong understanding of HSMs, cryptography, and secure transaction processing
* Domain Expertise on Card payment ecosystems (ATM, POS, e-commerce), Scheme connectivity and certification processes, ATM operations, reconciliation, dispute management