Senior Manager, OneStream Financial Accounting Systems

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The Senior Manager, One Stream Financial Accounting Systems serves as a senior functional leader with strong technical fluency within the One Stream Center of Excellence (CoE). This position operates with broad cross-functional visibility, engaging directly with senior Finance, Accounting, and Tax leadership to shape system strategy and execution. It is ideally suited for a professional seeking to transition from consulting to long‑term platform ownership, emphasizing sustained impact, governance leadership, and reduced travel.

This role leads the support, optimization, and enhancement of, and drives continuous improvement, automation, and the ongoing evolution of the One Stream platform’s Financial Accounting domain, encompassing Consolidations, Financial Reporting (External and Managerial), Job Reporting and Analysis / POC Accounting. The Senior Manager collaborates closely with Consolidations, Corporate Accounting, FP&A, Tax, and others to ensure accuracy, compliance, and efficiency in financial close and reporting processes.

This role also contributes to the CoE’s data and metadata governance frameworks and drives the ongoing evolution of processes, automation, and system standards across the organization. This role reports to the Director of Financial Systems and provides leadership across the Financial Accounting domain, fostering collaboration, governance discipline, and continuous improvement within the One Stream Center of Excellence.

• Serve as the functional owner for the Financial Accounting domain within the One Stream CoE, ensuring the platform’s ongoing optimization and strategic alignment with enterprise financial processes.
• Oversee consolidations, reporting, and related financial accounting processes in One Stream while driving continuous improvement, automation, and standardization.
• Lead the team providing Level 1 and 2 support during close cycles and coordinate across functional teams for issue resolution.
• Ensure compliance with accounting standards, SOX controls, and internal governance policies.
• Drive transformation and automation initiatives to streamline consolidation, close, and reporting processes in alignment with enterprise financial strategy.
• Partner with developers to validate, test, and document business rules, data integration, and workflow changes.
• Lead and contribute to One Stream governance frameworks, ensuring alignment across metadata, hierarchies, chart of accounts, and reporting structures while driving standardization and consistency across all accounting processes (including master data coordination between Hyperion DRM and One Stream).
• Create and maintain user documentation, training materials, and process flows for the Accounting and Reporting domains.
• Function as liaison between 50+ Operating Unit’s Accounting functions and Corporate, including Consolidations, External Reporting, Corporate and Divisional Accounting, FP&A and Tax teams to translate business needs and processes into solutions.
• Lead and participate in…