Assistant Controller

About the Role

Polymarket's finance team is small, high-output, and building the infrastructure that will support a category-defining company at scale. Reporting directly to the Controller, the Assistant Controller is a critical hire on a team where everyone owns their domain end to end. You won't be inheriting a finished system — you'll be inheriting a fast-moving business with real complexity, real regulatory exposure, and real expectations that the accounting function keeps pace with both.

The mandate is twofold: keep the close tight and build something that lasts. That means owning US GAAP reporting across multiple entities, maintaining and expanding our SOX control environment as we enter new product lines, and being the person who spots a gap in a workflow before it becomes a problem. We operate in regulated financial services with high transaction volume, crypto settlement flows, and active CFTC obligations — and if you're a CPA with deep fintech or financial services experience and the technical chops to apply ASC 606, ASC 805, and ASC 350-60 without needing someone to walk you through it, this is the role for you.

What You'll Do

• Own the monthly, quarterly, and annual close process end to end under US GAAP, including consolidated financials and statutory filings for subsidiaries

• Maintain and expand the SOX control environment as Polymarket launches new product lines and scales its US business, identifying control gaps before they become audit findings

• Apply technical accounting standards independently across complex areas including revenue recognition (ASC 606), business combinations (ASC 805), and intangibles and crypto assets (ASC 350-60), and document conclusions clearly for both internal and external audiences