Senior Software Engineer, Payments Platform – AI-Driven Impact

ACI Worldwide; Norcross (GA); On-site; USD 120,000 - 160,000; Full time

Job summary

ACI Worldwide in Norcross, GA is seeking a Senior Software Engineer to join the MTS Development team responsible for core payment processing capabilities. The role focuses on maintaining, enhancing, and modernizing high-value payment platforms to meet regulatory mandates and customer commitments.

The ideal candidate has extensive experience with complex enterprise applications, production support, and large-scale modernization initiatives, including 64-bit migration and ISO 20022.

Qualifications

• 5+ 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.

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.
• Drive engineering excellence through automation, testing, observability, and quality improvements.
• Leverage AI-assisted engineering tools to improve productivity and code quality.

Skills

Java

Enterprise apps

APIs

Databases

Production support

Job description

ACI Worldwide in Norcross, GA is seeking a Senior Software Engineer to join the MTS Development team responsible for core payment processing capabilities. The role focuses on maintaining, enhancing, and modernizing high-value payment platforms to meet regulatory mandates and customer commitments.

The ideal candidate has extensive experience with complex enterprise applications, production support, and large-scale modernization initiatives, including 64-bit migration and ISO 20022.