Staff, Architect - Tax Systems (OneSource)

Welcome to Warner Bros. Discovery… the stuff dreams are made of.

Who We Are…

When we say, “the stuff dreams are made of,” we’re not just referring to the world of wizards, dragons and superheroes, or even to the wonders of Planet Earth. Behind WBD’s vast portfolio of iconic content and beloved brands, are the storytellers bringing our characters to life, the creators bringing them to your living rooms and the dreamers creating what’s next…

From brilliant creatives, to technology trailblazers, across the globe, WBD offers career defining opportunities, thoughtfully curated benefits, and the tools to explore and grow into your best selves. Here you are supported, here you are celebrated, here you can thrive.

Your New Role...

The Staff, Architect - Tax Systems will own the end-to-end architecture, implementation, and support of the OneSource tax engine and its integrations with SAP Ariba and SAP S/4HANA 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 OneSource teams to design solutions and triage issues through to resolution. The role requires a strong working knowledge of the broader S/4HANA and Ariba landscape to understand issues end-to-end and validate fixes across the full transaction flow.

Your Role Accountabilities...

OneSource Architecture & Integration

• Own the architecture and design of OneSource tax engine integrations with SAP Ariba and SAP S/4HANA

• Lead implementation of new OneSource 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 OneSource configuration, calculation logic, and integration touchpoints with Ariba and S/4HANA

• Partner with SAP Basis/technical and Ariba teams to ensure solution designs support accurate tax determination, calculation, and posting end-to-end Issue Triage & Resolution

• Act as the primary business-facing point of contact for triaging tax integration issues spanning Ariba, S/4HANA, and OneSource

• Drive cross-team issue resolution, working directly with Ariba, SAP, OneSource, 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/4HANA, and OneSource 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 OneSource

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 OneSource 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 OneSource/Ariba/S/4HANA integration

Qualifications & Experiences...

• 9+ years of experience implementing and supporting enterprise tax systems

• 7-9 years of hands-on implementation or operational experience with Tax solutions like OneSource, Pagero

• 5-7 years of transactional processing and operations assurance experience

• Demonstrated expertise with OneSource, including hands-on experience implementing OneSource integration to Ariba

• Demonstrated expertise implementing OneSource integration to SAP S/4HANA

• 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/4HANA 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 required

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

How We Get Things Done…

This last bit is probably the most important! Here at WBD, our guiding principles are the core values by which we operate and are central to how we get things done. You can find them at along with some insights from the team on what they mean and how they show up in their day to day. We hope they resonate with you and look forward to discussing them during your interview.

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.

If you’re a qualified candidate with a disability and you require adjustments or accommodations during the job application and/or recruitment process, please visit our accessibility page for instructions to submit your request.

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