ACI Worldwide

Powering the world’s payments ecosystem

ACI powers the payments ecosystem – globally, and you power ACI. You’ll innovate, collaborate, and grow – in an energetic technology culture with decades of proven success. ACIers – in all roles and levels – are truly your colleagues and many are your friends. Our size and reach allow you to see the global impact of your work. You are visible, your talents are valued, and you are empowered to shape the future of payments.

As a Software Engineer in Athens, Greece you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem!

The purpose of the Software Engineer is:

The Software Engineer designs, develops, tests, and delivers high-quality software systems and applications. The role contributes to product enhancements and new feature development across backend and full-stack components. The majority of work is performed on a PC. Occasional limited travel may be required, both domestic and international.

A typical day at ACI for a Software Engineer is:

• Design, develop, test, and deliver high-quality backend and full‑stack software solutions.
• Create, review, and maintain technical deliverables across the stack, including API specifications, data models, and UI components, in alignment with established lifecycle methodologies.
• Investigate and resolve customer-reported issues across services, APIs, databases, and user interfaces.
• Maintain a solid understanding of application architecture, services/APIs, relational database design, and supporting infrastructure.
• Manage software dependencies and build tooling required to deliver robust and maintainable solutions (e.g., Maven, Gradle, npm).
• Exhibits good technical and business judgment and thorough understanding of how customers use the Company product when dealing with product requirements, complex design issues, and tradeoffs.

Knowledge, Skills and Experience needed to succeed in this role:

• Higher education (Bachelor's degree) in Computer Science or related field.
• 3+ years of software development experience with Java and Spring Framework
• Strong experience with relational databases and SQL.
• Experience or familiarity with Kotlin and/or Groovy is a plus.
• Exposure to modern frontend JavaScript frameworks or libraries; React experience is preferred.

Core Capabilities:

We seek colleagues who embody our core capabilities — these shape our culture and enable us to make a meaningful impact together:

• Ensure Accountability: holding self and others accountable to meet commitments.
• Drives Results: consistently achieving results, even under tough circumstances.
• Customer Focus: building strong customer relationships and delivering customer-centric solutions.
• Cultivate Innovation: creating new and better ways for the organization to be successful.
• Collaborates: building partnerships and working collaboratively with others.
• Courage: stepping up to address difficult issues, saying what needs to be said.

Applicants must be currently authorized to work in Greece on a full-time basis. This position does not offer sponsorship for employment visa status or work permit now or in the future.

In return for your expertise, we offer opportunities for growth, career development, and a competitive compensation and benefits package—all within an innovative and collaborative work environment.

Are you ready to help us transform the payments ecosystem? To learn more about ACI Worldwide, visit our web site at www.aciworldwide.com

ACI Worldwide is an AA/EEO employer in the United States, which includes providing equal opportunity for protected veterans and individuals with disabilities, and an EEO employer globally.

Important Notice About Recruitment Scams

Job seekers should be aware of ongoing recruitment scams where individuals or organizations impersonate legitimate companies to offer fake job opportunities. These scams often involve requests for personal information, payments, or interviews through unofficial channels. Please be cautious and verify any communications claiming to be from our company (www.aciworldwide.com / @aciworldwide.com). The ACI Worldwide recruitment team will always follow official channels and will never request payment.

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