Software Engineer
ACI Worldwide3 months ago
Limerick, IrelandSenior
Responsibilities
- Design, develop, and maintain core MTS platform capabilities.
- Deliver customer and regulatory commitments, including payment-network mandates.
- Participate in production issue resolution and root cause analysis.
- Support modernization initiatives including 64-bit migration, ISO 20022, structured address, security, and platform enhancement programs.
- Collaborate with Product Management, Professional Services, Quality Engineering, and Customer Support teams.
- Act as a technical mentor and support knowledge-transfer initiatives.
- Improve engineering quality through automation, testing, observability, and quality improvements.
- Use AI-assisted engineering tools to improve productivity and code quality.
Requirements
- 6+ years of software development experience.
- Strong Java and enterprise application development experience.
- Experience with large-scale transaction processing platforms.
- Experience debugging complex production issues.
- Strong understanding of software architecture, integration patterns, APIs, and database technologies.
- Experience with secure software development practices.
- Excellent communication and collaboration skills.
- Preferred: payments-industry experience with Fedwire, CHIPS, SWIFT, or ISO 20022.
- Preferred: experience supporting Tier-1 financial institutions and cloud migration or modernization initiatives.
- Preferred: knowledge of high-availability and mission-critical systems.
- Preferred: experience using AI engineering tools such as Copilot, Cursor, Claude, or equivalent.
About ACI Worldwide
ACI Worldwide builds payment processing and fraud prevention software for banks, merchants, and billers, delivered as on-premise and cloud services. Its portfolio spans real-time payments, card and merchant acquiring, bill payment, and risk management. Founded in 1975 and publicly traded on NASDAQ (ACIW), the company is headquartered in Elkhorn, Nebraska and serves financial institutions and retailers globally.