Patrick Clarke and Hubert O'Donoghue founded O-C Group in 2006. Between them, they have a range of IT Management, Development and Operational experience in transaction management systems which is unparalleled in this industry.

Through their management of the full development lifecycle of mission critical systems, supporting continous real-time transaction processing, this team is uniquely skilled and experienced to provide your organisation with the knowledge and know how to optimise your operational efficiency and maximise return on investment. The O-C Group team have been involved in all of the key developments in the Payments Industry over the last 20 years. They have led the development and deployment of card issuing and acquiring solutions throughout Europe, the Middle East and Africa. These projects included management of all the key disciplines in a full Project Life Cycle:

  • Production Deployment
  • Solutions Definition
  • QA planning and execution
  • 24x7 Production
  • Requirements Discovery
  • Software Development
  • Data Conversion
  • Due Diligence
company image






    Manage and execute change projects to rearchitect environments enabling our customers to increase revenues, reduce costs, adopt an industry standard or diversify into new products and services.


    Manage and execute projects and tasks aimed at addressing more short term business needs.


    Manage and execute compliance services to ensure an adequate control environment for our customers.


As a Qualified Security Assessor, O-C Group are approved to perform Payment Card Industry audits for any organisation which stores, processes or transmits cardholder data.

O-C Group work with Acquirers, Issuers, Merchants, Processors and Payment Service Providers to CHANGE, EXECUTE and apply CONTROL within their business through the following services.

  • Change

  • Execute

  • Control

PCI Services

Choose your offer and enjoy the quality.

PCI for Merchants

Merchants accepting credit cards in payment in either an online or retail environment are required to demonstrate PCI compliance.
  • 0-C Group have worked with many on-line and retail merchants to enable them to achieve compliance.
More Information

PCI for Processors and PSP's

Processors and Payment Service Providers are required to be listed on the card schemes list of certified service providers.
  • O-C Group professionals are uniquely positioned to assist processors and PSP's to achieve compliance.
More Information

PCI for Acquirers and Issuers

As the direct interface with the card schemes, Acquirers and Issuers are required to attest PCI compliance.
  • O-C Group are experienced in the key systems and applications used by issuing or acquiring organisations.
More Information


Are you ready to start your project? Get in touch with us.

(+353) 86 815 3559

Monday - Friday (9:00 - 17:00)


Everyday Support

Dublin, Ireland

51-52 Fitzwilliam Square West