Staff, Architect - Tax Systems (OneSource

Staff, Architect
- Tax Systems

The Staff, Architect
- Tax Systems will own the end-to-end architecture, implementation, and support of the One Source tax engine and its integrations with SAP Ariba and SAP S/4

HANA across US and international entities. This is a business-facing, hands-on architect role that serves as the primary point of contact between Tax, Ariba, SAP, and One Source teams to design solutions and triage issues through to resolution. The role requires a strong working knowledge of the broader S/4

HANA and Ariba landscape to understand issues end-to-end and validate fixes across the full transaction flow.

One Source Architecture & Integration

• Own the architecture and design of One Source tax engine integrations with SAP Ariba and SAP S/4
  
  HANA
• Lead implementation of new One Source integrations, tax content, and determination logic for new entities, regions, and business requirements across the US and international landscape
• Serve as the subject matter expert on One Source configuration, calculation logic, and integration touchpoints with Ariba and S/4
  
  HANA
• Partner with SAP Basis/technical and Ariba teams to ensure solution designs support accurate tax determination, calculation, and posting end-to-end
• Act as the primary business-facing point of contact for triaging tax integration issues spanning Ariba, S/4
  
  HANA, and One Source
• Drive cross-team issue resolution, working directly with Ariba, SAP, One Source, and other vendor/support teams to see issues through to completion
• Perform root-cause analysis on tax determination and posting discrepancies and recommend corrective configuration or process changes

Testing & Quality Assurance

• Design and execute end-to-end test scenarios spanning Ariba, S/4
  
  HANA, and One Source for new implementations, upgrades, and defect fixes
• Validate that tax determination and postings are correct across the full procure-to-pay transaction flow, not just within One Source

Cross-Functional Communication & Stakeholder Management

• Communicate clearly and proactively with Tax, Finance, IT, and vendor stakeholders across the US, Europe, and APAC regions
• Manage expectations across multiple parties and maintain a collaborative, solutions-oriented approach to issue resolution

Governance & Continuous Improvement

• Stay current on the One Source product roadmap, regulatory/tax changes, and SAP/Ariba release updates that affect tax integrations
• Identify opportunities to improve integration reliability, reduce manual intervention, and strengthen the overall tax systems landscape
• Maintain architecture, configuration, and process documentation for the One Source/Ariba/S/4
  
  HANA integration

• 9+ years of experience implementing and supporting enterprise tax systems
• 7-9 years of hands-on implementation or operational experience with Tax solutions like One Source, Pagero.
• 5-7 years of transactional processing and operations assurance experience
• Demonstrated expertise with One Source, including hands-on experience implementing One Source integration to Ariba
• Demonstrated expertise implementing One Source integration to SAP S/4
  
  HANA
• US and international tax systems implementation experience
• Functional tax knowledge - understanding of tax posting logic and requirements for US, Europe, and APAC regions
• Ability to interpret tax regulatory requirements by region and assess their impact on tax engine configuration, master data, and downstream postings
• Solid working understanding of SAP S/4
  
  HANA and SAP Ariba sufficient to understand issues end-to-end and validate fixes across the full transaction flow
• Proven ability to work across Ariba, SAP, and other parties to triage issues and see them through to completion
• Excellent communication skills and a collaborative, business-facing approach given the number of parties involved
• Bachelor's degree in a related field or equivalent experience

Not Required but preferred experience:

• Knowledge of e-invoicing solutions such as Pagero, Edicom, or SOVOS
• Experience with additional tax engines such as Vertex
• Working knowledge of additional SAP modules (MM, SD, AP) that impact taxation
• Exposure to SAP ABAP or other technical/integration skills
• Experience working in a national or global company
• Experience in the media, entertainment, or streaming services industry

Championing Inclusion at WBD

Warner Bros. Discovery embraces the opportunity to build a workforce that reflects a wide array of perspectives, backgrounds, and experiences. Being an equal opportunity employer means that we take seriously our responsibility to consider qualified candidates on the basis of merit, without regard to race, color, religion, national origin, gender, sexual orientation, gender identity or expression, age, mental or physical disability, and genetic information, marital status, citizenship status, military status, protected veteran status or any other category protected by law.

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