Platform Engineer

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 Platform Engineer in Limerick, you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem!

This purpose of this Platform Engineer is:

ACI's Internal Developer Platform is the foundation every product and delivery team builds on - cloud-native infrastructure spanning Kubernetes/OpenShift, multiple cloud providers, CI/CD, observability, and developer enablement capabilities.

As a Platform Engineer, you will independently design, build, support, and improve platform capabilities that enable engineering teams to deliver software quickly, securely, and reliably. You will work across infrastructure automation, cloud platforms, Kubernetes, CI/CD, observability, and operational excellence while developing deeper expertise in Platform Engineering and DevOps practices.

A typical day at ACI for a Senior Platform Engineer is:

• Design, build, and maintain platform capabilities supporting cloud-native application delivery.
• Build and support Infrastructure as Code modules and automation capabilities.
• Design and maintain CI/CD pipelines and deployment automation.
• Support Kubernetes/OpenShift platforms and application onboarding activities.
• Participate in platform operational support and on-call activities.
• Investigate incidents, perform root-cause analysis, and contribute to post-incident reviews.
• Improve observability through logging, monitoring, metrics, dashboards, and alerting.
• Identify opportunities to reduce manual work through automation and self-service tooling.
• Partner with software engineering teams to improve developer experience and platform adoption.
• Use AI-assisted engineering tools to improve delivery velocity, troubleshooting, and operational efficiency.
• Perform other duties as assigned
• Understand and adhere to all corporate policies to include but not limited to the ACI Code of Business Conduct and Ethics.

As a Platform Engineer at ACI, you will work with the below Tech Stack:

• • Cloud Platforms - strong hands-on experience with Azure. Exposure to AWS or willingness to build deeper AWS capability.

• • Container Platforms - strong hands-on Kubernetes experience and experience with OpenShift, or willingness to develop OpenShift expertise.

• • Infrastructure as Code - strong Terraform and Helm experience, including reusable modules, platform templates, environment automation, and policy-as-code practices.

• • GitOps & CI/CD - Argo CD, or Flux, GitOps workflows, CI/CD pipeline implementation, immutable promotion patterns, and golden-path delivery tooling.

• • Observability & Reliability - Grafana, logs, metrics, dashboards, alerting, tracing, troubleshooting, operational excellence, and SRE practices.

• • Databases & Platform Services - MongoDB, PostgreSQL, and platform-level database automation. Exposure to vector-enabled database capabilities is desirable.

• • Automation & Scripting - Python, Bash, Go, or equivalent scripting and automation experience.

• • AI & Emerging Platforms - familiarity with AI-assisted engineering tools, model-serving concepts, embeddings, RAG workflows, and vector search concepts.

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

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline, or equivalent practical experience.
• Up to 5 years of experience in Platform Engineering, Cloud Engineering, DevOps, Infrastructure Engineering, or Software Engineering roles.
• Strong understanding of Linux, cloud computing, networking, and distributed systems fundamentals.
• Hands-on experience with Kubernetes or OpenShift in development, test, or production environments.
• Experience with Infrastructure as Code tools such as Terraform or equivalent.
• Experience with CI/CD pipelines and deployment automation.
• Experience supporting cloud platforms such as AWS, Azure, or GCP.
• Experience with containers and containerized application deployment.
• Experience troubleshooting production systems and resolving operational issues.
• Familiarity with observability concepts, including logs, metrics, dashboards, and alerting.
• Good communication skills and the ability to collaborate with software engineering teams and stakeholders.
• Experience using AI-assisted engineering tools and automation techniques to improve delivery and operational effectiveness.

Preferred Knowledge, Skills and Experience needed for this role:

• Experience supporting enterprise Kubernetes platforms.
• Experience with GitOps practices using Argo CD, Flux, or equivalent.
• Experience with Helm and Kubernetes application packaging.
• Experience with platform engineering concepts such as Internal Developer Platforms and self-service capabilities.
• Experience with scripting languages such as Python, Bash, or Go.
• Experience supporting highly available, distributed production platforms.
• Familiarity with security and compliance controls within cloud environments.
• Experience with service mesh technologies.
• Exposure to FinOps, operational governance, or cloud cost optimization.
• Experience within payments, financial services, or other regulated industries.
• Industry certifications related to cloud, Kubernetes, or DevOps technologies.

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 Ireland 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 Job ID (Requisition #19966)

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.