Accounting Manager, Polymarket US

Polymarket•New York, NY

About The Position

Polymarket is the world's largest prediction market platform. We enable individuals to express views on real-world events by trading on outcomes across politics, economics, sports, culture, and current affairs. Built as a peer-to-peer marketplace with no centralized "house," Polymarket aggregates diverse opinions into transparent, market-based probabilities that reflect collective expectations about the future. We're growing fast: both in volume ($21B traded in 2025) and in adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media, powered by fast, reliable, and deeply technical market infrastructure. About the Role Polymarket US is seeking an Accounting Manager to be the hands-on owner of our general ledger, month-end close, and day-to-day accounting operations. Reporting to the US Controller, this role is responsible for the accuracy and integrity of our financial records across our US legal entities, ensuring we can report reliably for all internal and external needs. You will work closely with the Controller and our international accounting team to keep our books clean, our close process running smoothly, and our reporting ready for auditors, regulators, and management. The Accounting Manager will report into the US Finance function.

Requirements

4–6 years of accounting experience, ideally in a startup or fast-paced environment.
Hands-on experience owning month-end close, general ledger maintenance, and bank reconciliations.
Comfort working across multiple legal entities and supporting consolidation.
Proficiency with Ramp or similar spend management platforms.
Advanced Excel skills and a practical, tech-forward approach to accounting.
Ability to work effectively with external consultants and cross-functional teams.

Nice To Haves

CPA is a plus, but not required.
Experience in a Fintech, Exchange, Brokerage, or regulated financial services environment (e.g., CFTC, SEC, or FINRA oversight).
Experience with modern ERP and FinOps tools such as Rillet, Campfire, or similar platforms.
Prior experience at a high-growth startup.

Responsibilities

Own the day-to-day maintenance of the general ledger, including journal entries, accruals, and balance sheet reconciliations.
Execute the full-cycle month-end close process, ensuring accurate and timely financial statements across our US legal entities.
Ensure consistency in accounting policies and chart of accounts across entities.
Liaise with our international accounting team to support intercompany reconciliation and consolidation.
Prepare and maintain financial reports to support management, regulatory, and audit needs.
Ensure the books are always in a state that can support timely reporting across all stakeholders.
Serve as a key point of contact during the annual audit cycle, preparing work papers, schedules, and supporting documentation for external auditors.
Maintain organized, audit-ready records throughout the year.
Manage day-to-day accounts payable and corporate card administration via Ramp.
Ensure accurate entity-level coding and timely processing of bills and expenses.
Liaise with external tax consultants on federal, state, and local filings, providing financial data, schedules, and supporting documentation as needed.
Perform daily and monthly bank reconciliations across corporate and operational accounts.
Partner with the Clearing Operations team to reconcile exchange-related activity against the general ledger.
Maintain clear reconciliation logs to support regulatory oversight.