Job Title: ACI Connex Developer

Experience: 3 to 8 Years

Location: Pune / Bangalore / Chennai

Job Summary

We are seeking an experienced ACI Connex Developer with solid expertise in payment switching, ATM/POS transaction processing, ISO 8583 messaging, and acquiring/issuing systems. The ideal candidate should have hands-on experience in Connex development, switch interfaces, payment network integrations, and transaction processing solutions within the Cards & Payments domain.

Key Responsibilities

- Develop, customize, and support ACI Connex payment switch applications.
- Design and implement transaction processing solutions for ATM, POS, and card payment systems.
- Develop and maintain Connex interfaces, routing rules, and transaction flows.
- Work on issuer and acquirer transaction processing requirements.
- Analyze and troubleshoot payment-switch-related production issues.
- Support Visa, Mastercard, NPCI, and other payment network integrations.
- Perform unit testing, SIT, UAT, certification, and production deployments.




- Collaborate with business, operations, and client teams to deliver payment solutions.
- Ensure high availability and performance of payment-switching systems.

Mandatory Skills

- Hands-on experience in ACI Connex Development
- Connex Script development/customization
- ISO 8583 Message Processing
- Payment Switching
- ATM/POS Transaction Processing
- Acquiring & Issuing Systems
- Payment Network Integrations (Visa, Mastercard, NPCI)
- Switch Interface Development
- Transaction Routing & Authorization

Technical Skills

- Java
- Python
- SQL
- Node.js
- XML
- Connex Scripts

Preferred Skills

- Experience with ACI payment products.
- Knowledge of ATM/POS terminal integrations.
- EMV transaction processing.
- Production support and incident management.
- Banking and Cards & Payments domain experience.
- Exposure to switch certification projects.

📌 ACI Connex Developer (Pune)
🏢 Synechron
📍 Pune