We are looking for a skilled Postilion Implementation Specialist with strong experience in electronic payments, card transaction processing, and switch systems. The candidate will be responsible for implementing, configuring, and supporting ACI Postilion solutions for ATM, POS, and online transactions.

• Lead and support end-to-end implementation of Postilion switch (ATM/POS acquiring & issuing)
• Gather and document business requirements (BRD, SRS) for payment systems
• Transaction routing
• Device handlers (ATM/POS)
• Integrate Postilion with Core Banking Systems, Card Management Systems (CMS), External networks like Visa Inc. and Mastercard
• Key exchange & encryption (DUKPT, PIN translation)
• Handle scheme certifications (Visa/Mastercard testing & compliance)
• Support chargeback, reconciliation, and dispute flows
• Perform SIT/UAT testin...