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 Senior Tax Accountant in Limerick, Ireland, you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem!

This purpose of this Senior Tax Accountant is:

We’re looking for a Senior Tax Accountant to join our EMEA tax team at an exciting time of transformation. This is a hands‑on role with real ownership — combining technical tax work, cross‑border exposure, and the chance to shape how tax is done using automation and data.

You’ll work closely with finance, systems, and global tax colleagues to deliver accurate compliance and reporting, while also helping modernise our tax processes.

The successful candidate will support the finance & tax department to ensure the ACI group meets its financial, tax compliance and reporting obligations. This role requires a good knowledge of accounting principles, with exposure to tax accounting as an advantage.

A typical day at ACI for a Senior Tax Accountant is:

Leading tax process improvements by developing system automations to streamline processes
Preparation of the US GAAP quarterly tax provision for European entities and prepare supporting schedules for US reporting purposes
Support international tax matters including transfer pricing, and Pillar Two
Identifying and executing withholding tax planning opportunities to minimise cash tax leakage and reduce effective tax costs.
Coordinate and direct outsource providers to complete the tax returns for European subsidiaries
Lead the preparation of documentation for Irish Research & Development Claims
Leading VAT, Intrastat, VIES and other tax-related filings
Perform other duties as assigned.
Understand and adhere to all corporate policies to include but not limited to ACI code of ethics and global information security.

Knowledge, Skills and Experience required for the job:

Degree in Accounting, Business, Finance or equivalent
Full or part accounting/tax qualification with a desire to complete same
3+ years experience in an accounting or tax environment
Proactive, self‑motivated approach with the ability to work independently and collaboratively
Highly Desired Skills:
- ERP Systems (e.g. Oracle Fusion)
- Tax systems (e.g. Alphatax, Onesource tax provision)
- Demonstrated curiosity and openness to leveraging AI tools, automation, or emerging technologies to improve how tax work gets done

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 the stated hiring location 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 challenge, opportunity, an excellent salary and benefits package.

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.

#LI-KCYY

ACI Worldwide is a global leader in mission-critical, real-time payments software. Our proven, secure and scalable software solutions enable leading corporations, fintechs and financial disruptors to process and manage digital payments, power omni-commerce payments, present and process bill payments, and manage fraud and risk. We combine our global footprint with a local presence to drive the real-time digital transformation of payments and commerce.

Sr Tax Accountant

Job Description