mainstay - Controller
Requirements
• Bachelor's degree in Accounting or Finance; CPA strongly preferred • 10+ years of progressive accounting experience, including prior experience as a Controller or Assistant Controller • Strong working knowledge of U.S. GAAP, with demonstrated experience owning a complete close and preparing consolidated financial statements independently • Advanced Excel skills and experience with a modern ERP/accounting system • Prior experience managing and developing an accounting team • Experience at a high-growth, VC-backed startup, especially one that has scaled its finance function from the ground up • Experience working with tools such as Ramp, Rippling, Shareworks, and Sage Intacct • Experience implementing or migrating accounting systems • Experience managing external audit and tax return processes end-to-end • Experience presenting financials to a board or investors • MAINSTAY BUILT ON TRUST
Responsibilities
• Own the monthly, quarterly, and year-end close process in full, including journal entries, account reconciliations, and consolidations • Prepare and take final ownership of accurate, timely GAAP financial statements and supporting management reporting packages • Design, implement, and enforce the internal control environment as Mainstay scales, building the foundation for future audit and compliance requirements • Set technical accounting policy — researching and documenting positions on revenue recognition, equity, leases, and other complex areas, and serving as the company's point of authority on GAAP matters • Define and implement scalable finance and accounting data structures across the ERP, internally managed databases, and fragmented product group data assets • Own the external audit relationship, including PBC schedules, auditor coordination, and final resolution of technical issues • Partner with the Head of Finance on budgeting, forecasting, and variance analysis • Partner with Legal and People teams to maintain and manage the cap table • Build, manage, and mentor the accounting team as it grows, including hiring and development of accounting staff • Own accounting systems and ERP strategy, driving automation and process improvement as transaction volume increases • Lead ad hoc projects tied to fundraising, board reporting, and other strategic initiatives
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