Michael O'Connell

Senior Manager at Deloitte Ireland | SAP S/4HANA Finance & RAR

Ireland

About

Michael is an SAP Finance Senior Manager in the Deloitte Ireland Enterprise Technology & Performance (ET&P) SAP team. With over 25 years of SAP & Business Process experience evenly spread between Consulting and Industry across Beverage, Oil & Gas Secondary Distribution, IT Networks, Enterprise IT & Services, Public Sector Healthcare, Global Integrated Container Logistics, Life Sciences Med Tech, Research & Diagnostics, Healthcare Services and Building Materials sectors. He has delivered in a variety of SAP FI/CO centric Lead roles on multiple large implementations, rollouts & company separations, with a strong emphasis on Finance integration including Intercompany & Revenue processes. His most recent roles have been as a Finance Lead on a Greenfield S/4 OP 2023 implementation and RAR QA Advisory. Prior to that he was RAR SME Lead on a number of S/4 OP 2021 projects and Core Finance Lead on a Greenfield SAP S/4HANA OP 1909 implementation, and before that he was the SAP RAR Worldwide Lead for a client's New Revenue Standard project (IFRS15/ASC606). Michael has a proven track record of successfully leading by example and mentoring both large and smaller teams on key projects.

Experience

  • Deloitte (Full-time · 5 yrs)
    • SAP S/4 FI RAR SME | QA | Global Life Sciences MedTech Client
      Dec 2025 - Present · 7 mos

      Delivered the Assessment phase incl. report & recommendations regarding the challenges client has faced since going live with RAR on S/4 last August. Subject matter expert advisory also on RAR technical exit approach.

    • SAP RAR SME Advisory | RAR Implementation & Rollouts | Life Sciences Research & Diagnostics Client
      Jun 2023 - Present · 3 yrs 1 mo

      RAR SME Advisory role on this client's SAP RAR implementation project on single ECC6 system as a prerequisite to their S/4HANA Conversion project. Deloitte are not the SI. Initially task was to help revise their Testing & rollout plans along with providing best & leading practice expertise including Design inputs. My role evolved into a broader one partnering with the Corporate Revenue Group team to support them with RAR Migration preparation, validation approach & validations while also helping them and the SI with analysis & solutions for the rollout of 40+ entities across the globe.

    • SAP Finance Lead | S/4 Greenfield Implementation | Global Building Materials Client
      Jul 2025 - Jan 2026 · 7 mos

      Core Finance Lead on this S/4 implementation for the client’s Head Office entity. Led Design, Best practice implementation, Build, Test, Training, Cutover & Hypercare phases.

  • DXC Technology (8 yrs)
    • SAP S/4HANA Core Finance Lead | Greenfield Implementation | Public Sector Client
      Dec 2019 - Mar 2025 · 5 yrs 4 mos

      Core Finance Lead on this SAP S/4HANA Greenfield National Implementation project delivering Best practice/Standard Fit & Gap solutions for Asset Accounting, Journal Processing, Financial Closing, Reconciliations and Statutory Reporting processes incorporating functionalities for Parallel Ledgers, Document splitting, Flexible Workflow, Financial Closing Cockpit, Migration Cockpit for Assets & GL Open items/Balances, Intra & Intercompany, Integration and Interfaces with GL.

    • SAP Revenue Accounting IT Lead | Rev Rec Convergence Project | HPE Account
      Apr 2017 - Dec 2019 · 2 yrs 9 mos

      SAP RAR Worldwide Lead for DXC on HPE's New Revenue Standard (IFRS15/ASC606) challenging 2 year program/project which went live on Nov 1st 2018, comprising of 7 sending/source SAP SD RAR components & 1 receiving/target SAP RAR component/engine with extensive enhancements & utility programs to address the many gaps & limitations with the standard product and HPE specific requirements. My lead role included solution architecture, functional/technical design solutions, supporting fellow Functional & ABAP subject matter experts on both solutions and troubleshooting/root cause analysis from prototyping, development through testing, move to production & warranty.

  • Hewlett Packard Enterprise (Galway, Ireland)
    • SAP Platform Development team FI/CO Functional Analyst
      Nov 2012 - Mar 2017 · 4 yrs 5 mos

      SAP FI/CO Architect, Designer & Functional lead roles on multiple key projects for the organization. Subject matter expertise includes Revenue Recognition, VIM (Vendor Invoice Management) by OpenText, Intercompany, ALE/IDOC Interfaces, Company Separation/Split/Carve-Out. Prototyping SAP RAR (Revenue & Reporting solution for IFRS15) and Simple Finance on S4 HANA.

    • SAP Worldwide Support Analyst
      Sep 2011 - Nov 2012 · 1 yr 3 mos

      SAP FI/CO, Intercompany & GTS [Global Trade Services] Support of the multiple SAP Supply chain, Services & Financial production instances

  • SAP Business Analyst at Enterasys Networks
    Sep 2010 - Aug 2011 · 1 yr

    SAP FI/CO Business Analyst, Projects and Support role. Emphasis on utilizing more of the standard ECC 6.0 functionality available. Configuration of Outgoing payment files using Payment medium workbench, Customer Billing Output determination with email correspondence, Company code creation for all areas of the Legal entity's business including Fixed Assets and Intercompany.

  • Senior SAP FICO consultant Implico UK at Implico GmbH
    Jan 2009 - Sep 2010 · 1 yr 9 mos

    SAP FICO project consultant on client's full implementation of SAP ECC6. Project prep., scope, blueprinting, realisation, go live support. Blueprinting on follow up project. Responsible for delivery of the following system design; Intercompany, Excise Duty, Fuel Cards, Billing Control & Correspondence with BTEs activated, CO-PA, SD & MM Account Determination.