Software Engineer

Limerick, Munster, IEFull-time2026-10-24 → 2026-11-09

Core

Design, develop, and maintain core capabilities of a critical high-value payments platform, supporting regulatory mandates and platform resiliency.

Role type

Senior IC software engineer (payments)

Builds

Core payment processing capabilities for high-value transactions

Domain

Financial services / Payments

Required skills

Java, enterprise application development, large-scale transaction processing, production debugging, software architecture, API integration, database technologies, secure software development

Preferred skills

Payments industry experience (Fedwire, CHIPS, SWIFT, ISO 20022), Tier-1 financial institution support, cloud migration, high-availability systems, AI engineering tools

Technologies

Java, APIs, databases, cloud platforms

Responsibilities

Design and develop core MTS platform capabilities; Deliver customer and regulatory commitments; Participate in production issue resolution and root cause analysis; Support modernization initiatives (64-bit migration, ISO 20022); Collaborate with Product Management, Professional Services, Quality Engineering, and Customer Support teams; Act as a technical mentor; Drive engineering excellence through automation and testing

Seniority

Senior, hands-on IC

About ACI Worldwide

ACI Worldwide is a global leader in mission-critical, real-time payments software . Our proven, secure and scalable software solutions enable leading corporations, fintechs and financial disruptors to process and manage digital payments , power omni-commerce payments , present and process bill payments , and manage fraud and risk . We combine our global footprint with a local presence to drive the real-time digital transformation of payments and commerce.