Senior Software Engineer, Payments Platform (Hybrid)

19109 SPEEDPAY RD; Omaha (NE); Hybrid; USD 140,000 - 190,000; Full time

Job summary

ACI Worldwide is seeking a Senior Software Engineer to join the MTS Development team in Norcross, GA. You will design, develop, and maintain core payment processing capabilities while supporting regulatory mandates and platform modernization.

The ideal candidate has 8+ years of software development experience with strong Java and enterprise application skills, and a proven track record in large-scale payment systems and production support. Collaboration and mentoring are key parts of the role.

Qualifications

• 8+ years of software development experience.
• Strong Java and enterprise application development.
• Experience with large-scale transaction processing platforms.
• Experience debugging complex production issues.
• Strong understanding of software architecture, 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

System integration

Debugging production issues

Software architecture

APIs

Databases

Security practices

Communication

Tools

Copilot

Cursor

Claude

Job description

ACI Worldwide is seeking a Senior Software Engineer to join the MTS Development team in Norcross, GA. You will design, develop, and maintain core payment processing capabilities while supporting regulatory mandates and platform modernization.

The ideal candidate has 8+ years of software development experience with strong Java and enterprise application skills, and a proven track record in large-scale payment systems and production support. Collaboration and mentoring are key parts of the role.