OneStream Client-Side Lead; Contractor

Location: NYC (Hybrid – 2/3 days on-site preferred)
Duration: 6–12 Months Engagement: Systems Accountants on behalf of an NYC-based Corporate Finance team.

Our client is currently undergoing a multi-phase One Stream implementation. We require an experienced One Stream Contractor to sit on the "client-side" of the project. You will act as the internal technical and functional lead, ensuring that the implementation partner’s design aligns with the long-term operational needs of the business.

• Partner Oversight: Review technical design documents and business rules provided by the implementation partner to ensure scalability and best practices.
• Requirements Ownership: Act as the bridge between the internal Finance/Accounting teams and the external consultants to ensure no functional requirements are "lost in translation."
• UAT Leadership: Lead the User Acceptance Testing (UAT) phase from the client perspective, including test script creation and defect management.
• Data Validation: Oversee the reconciliation process between legacy systems and One Stream to ensure 100% data integrity.
• Knowledge Transfer: Shadow the implementation partner to ensure the internal team is fully equipped to manage the application post-go-live.

• Perspective: Must have previous experience either as a One Stream Administrator or a Client-Side Project Lead.
• Technical Knowledge: Strong understanding of One Stream Finance Engine, Workflow, and Extensibility. Ability to "audit"  business rules.
• Project Governance: Experience managing external implementation partners and holding them accountable to SOW milestones.
• Communication: High-level stakeholder management skills; ability to explain technical constraints to a CFO/Controller.