Synechron

ACI Connex Developer

India · Work style not stated · Full time

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About the role

Description from the employer’s posting. Check the employer’s page for the current version.

EmployerSynechron
LocationIndia
Work styleWork style not stated
Employment typeFull time
Employer posted6 Oct 2026

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 strong 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.

Show full description

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.

SYNECHRON’S DIVERSITY & INCLUSION STATEMENT

Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.

All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.

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