Assistant Controller

About Polymarket

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 terms of volume ($21B traded in 2025) and adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.

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

Partner with the Controller and legal and compliance teams on CFTC and other US regulatory filings, ensuring accuracy and timeliness

Scope and implement accounting system improvements, writing up process gaps, shipping fixes, and building workflows the team can actually rely on

Collaborate with product, legal, and business teams on new product launches, M&A activity, and monetization changes, providing accounting guidance before decisions are made

Manage and mentor junior accounting staff, setting a high bar for quality and helping the team grow without becoming a bottleneck

What We're Looking For

Active CPA license, required

8–15 years of progressive accounting experience, with meaningful time spent in banking, fintech, or regulated financial services

Hands-on experience with high transaction volume environments, including crypto on-ramps, stablecoin settlements, and fiat integrations, plus reconciliation workflows and error rate management

Demonstrated technical GAAP expertise across ASC 606, ASC 805, and ASC 350-60, applied independently in real situations

Direct experience with SOX compliance, including building and maintaining controls — not just operating within them

Direct experience with CFTC and other US financial regulatory filings

Strong written and verbal communication skills — you can explain a complex accounting position to a non-accountant clearly

Management experience from a Big 4 firm, strongly preferred

Bachelor's degree in Accounting or Finance

Strong command of Microsoft Excel

(Plus) Experience with accounting system implementations from scoping through go-live

(Plus) SQL skills

(Plus) Prior experience at a high-growth startup where the infrastructure was still being built when you arrived

Benefits

Competitive salary & equity

Unlimited PTO

Full Health, Vision, & Dental coverage

401k match

Hardware setup: new MacBook Pro, big display, & accessories

Pay Transparency

Base salary range: $275,000 to $295,000, plus equity and benefits.

This is a good-faith range for the level we're hiring at. Experience varies widely within a title here, so if your expectations fall outside it, reach out anyway. We're always happy to talk it through.