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

This purpose of this Associate Platform Engineer is:

ACI's Internal Developer Platform is the foundation every product and delivery team builds on — cloud-native infrastructure spanning Kubernetes/OpenShift and multiple cloud providers, CI/CD, observability, and the golden paths that let engineers ship payment software quickly and safely. As Associate Platform Engineer, you'll build and support well-scoped pieces of this platform under the guidance of senior engineers, learning the infrastructure-as-code, container orchestration, and observability practices that make it work — with AI-assisted tooling built into how you learn and work from day one.

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

Build and maintain well-defined pieces of the platform (CI/CD pipeline components, Kubernetes manifests, IaC modules) under the guidance of senior platform engineers
Learn and apply the platform's golden-path tooling and standards, and start noticing where the “right way” could be made easier for other engineers
Support observability and monitoring for the services you help build — instrumenting logs and metrics, and learning what “healthy” looks like for platform infrastructure
Participate in the platform's on-call rotation as a learning experience, shadowing senior engineers on incidents before taking on independent ownership
Use AI-assisted engineering tools daily to accelerate your own learning, and start noticing where AI-assisted tooling could help the platform's users, not just you
Write infrastructure-as-code for well-scoped components, learning Terraform/Kubernetes patterns from code review feedback
Participate in incident postmortems and learn the platform's reliability practices firsthand
Ask questions early and often about how pieces of the platform fit together — building foundational systems thinking about infrastructure at scale
Build working relationships with the engineering teams who depend on the platform, and start understanding their needs firsthand
Understand and adhere to all corporate policies to include but not limited to the ACI Code of Business Conduct and Ethics.

Our Tech Stack that you will work with:

Gen AI infrastructure — curiosity about model-serving and vector database concepts; hands-on use of AI coding assistants
Container orchestration — foundational knowledge of Kubernetes/OpenShift concepts (pods, deployments, services)
Infrastructure as code — growing familiarity with Terraform (or equivalent), able to make small, guided changes to existing modules
Cloud platforms — foundational hands-on experience with Azure, Openshift or AWS
CI/CD & delivery — comfortable using existing pipelines (ArgoCD, GitHub Actions, Jenkins, or equivalent)
Observability — basic familiarity with instrumentation and dashboards (Prometheus/Grafana, Datadog, or equivalent)
Service mesh & networking — awareness of service mesh concepts; growing networking fundamentals

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

Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent practical experience
Relevant experience, including internships, co-op placements, academic projects, open-source contributions, or equivalent hands-on experience
Foundational understanding of Linux, networking, and cloud computing concepts
Basic programming or scripting skills and familiarity with software development principles
Strong analytical and problem-solving skills, with the ability to explain technical decisions and approaches
Demonstrated curiosity about cloud-native technologies and modern platform engineering practices
Growth mindset, with a willingness to learn from feedback, mentoring, and code reviews
Ability to work effectively within a collaborative engineering team and build positive working relationships with stakeholders
Comfortable using AI-assisted engineering and development tools, with an interest in learning to use them effectively
Willingness to learn Infrastructure as Code, container orchestration, observability, and platform reliability practices hands-on

Preferred Knowledge, Skills and Experience needed for this role:

Basic familiarity with monitoring, logging, metrics, dashboards, or observability tools such as Prometheus, Grafana, or Datadog
Awareness of service mesh concepts and modern cloud-native architectures
Hands-on experience using AI coding assistants or an interest in AI infrastructure and emerging technologies
Personal projects, home lab experience, open-source contributions, or university projects related to infrastructure, cloud, DevOps, or automation
Exposure to payments, financial services, or another regulated industry

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 #19956)

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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Associate Platform Engineer

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Job Description