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Onesource

Exp – 5+ years

Job Description:

OneSource Administration & Support

  • Administer, configure, and maintain Thomson Reuters OneSource applications (e.g., Indirect Tax, Income Tax, Transfer Pricing, Tax Provision, Reporting).
  • Manage user access, roles, security, and environment setup across DEV/TEST/PROD.
  • Monitor system performance, batch jobs, and data integrity; proactively resolve issues.
  • Provide Level 2/3 support for OneSource incidents, defects, and enhancement requests.

Configuration & Enhancements

  • Configure tax rules, rates, jurisdictions, calculations, workflows, and reports based on business and regulatory requirements.
  • Support new country/state tax setups, legislative changes, and periodic tax updates.
  • Partner with Tax teams to implement changes related to new business models, acquisitions, or regulatory requirements.

Integrations & Data Management

  • Support integrations between OneSource and ERP systems (e.g., Oracle EBS, Oracle Fusion, SAP) and other upstream/downstream applications.
  • Validate inbound and outbound data feeds; ensure data accuracy and reconciliation.
  • Collaborate with IT and vendors during integration changes, upgrades, or migrations.

Testing & Release Management

  • Lead and support system testing for patches, upgrades, tax updates, and enhancements.
  • Coordinate UAT with Tax and Finance stakeholders.
  • Prepare deployment plans and support production releases.

Governance, Documentation & Compliance

  • Maintain system documentation, configuration guides, SOPs, and support playbooks.
  • Ensure SOX controls, audit requirements, and compliance standards are met.
  • Support internal and external audits by providing system evidence and explanations.

Required Qualifications

  • Bachelor’s degree in Accounting, Finance, Information Systems, or a related field.
  • 5+ years of hands-on experience administering Thomson Reuters OneSource.
  • Strong understanding of indirect tax and/or corporate tax processes.
  • Experience integrating OneSource with enterprise ERP systems (Oracle EBS/Fusion, SAP).
  • Solid understanding of tax data flows, calculations, and reporting.
  • Experience supporting production systems in a global enterprise environment.

Preferred Qualifications

  • Experience with OneSource upgrades, cloud transitions, or ERP migrations.
  • Knowledge of SOX controls and audit processes.
  • Experience working with global tax teams across multiple geographies.
  • Prior consulting or managed services experience with OneSource.
  • Exposure to automation, reporting tools, or data analytics is a plus.

Key Skills & Competencies

  • OneSource configuration and troubleshooting
  • Tax process and compliance knowledge
  • ERP integrations and data validation
  • Stakeholder communication and collaboration
  • Problem-solving and analytical skills
  • Documentation and process discipline

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