Senior Backend Engineer, Trust & Safety
Job Description
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 is looking for a Backend Engineer to build the detection, monitoring, and case-management systems that keep our platform compliant and safe at scale.
This role partners closely with Compliance, Risk, and Legal to translate regulatory requirements into engineering systems that protect the platform and its users, with high ownership and direct impact on Polymarket's risk posture.
What You'll Do
- •Design and build detection, monitoring, and case-management systems to meet AML/BSA, KYC/EDD, and sanctions-screening obligations at scale
- •Build on or integrate with trade-surveillance and case-management platforms (e.g., Eventus, Palantir) and structure audit-grade data pipelines (tiered storage, long-term retention in S3) for compliance and financial-crimes review
- •Model and reconcile financial data (FinOps, ledger reconciliation) to ensure auditability and accuracy of money-movement records
- •Translate regulatory requirements into engineering systems — alerting, case queues, investigative reporting — in close partnership with Compliance, Risk, and Legal
- •Develop real-time risk decisioning and transaction-monitoring systems to detect and respond to financial crime
- •Work closely with engineers across the platform to keep Trust & Safety systems tightly integrated with the broader exchange
What We're Looking For
- •Backend engineering experience building detection, monitoring, or case-management tooling for AML/BSA, KYC/EDD, or sanctions-screening obligations at scale
- •Experience integrating or building on trade-surveillance and case-management platforms (e.g., Eventus, Palantir) and structuring audit-grade data pipelines
- •Comfortable modeling and reconciling financial data (FinOps, ledger reconciliation) for auditability and accuracy
- •Track record partnering directly with Compliance, Risk, and Legal teams to translate regulatory requirements into engineering systems
- •Background in risk/fraud or compliance-technology engineering at a fintech or crypto exchange
- •(Plus) Experience building real-time risk decisioning or transaction-monitoring systems at scale
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: $250,000 to $500,000 annually, plus equity and benefits.
This range reflects a good-faith estimate for this position. Experience levels vary widely within a title here, so please reach out even if your expectations fall outside it. We're always happy to chat.
About Polymarket
Polymarket is at the forefront of the decentralized information and prediction market revolution, leveraging cutting-edge blockchain technology to create a more transparent and efficient way to bet on real-world events. We're building a platform where users can trade on their beliefs about everything from politics to pop culture, fostering a global community driven by data and conviction. Our mission is to democratize access to information and enable price discovery in a trustless environment, fundamentally reshaping how people engage with and understand the world. Our team thrives on innovation, intellectual curiosity, and a deep-seated belief in the power of Web3 principles. We champion a culture of open collaboration, radical transparency, and continuous learning, encouraging every team member to contribute their unique perspective to solve complex challenges. We are a group of passionate builders, designers, and strategists united by a vision for a decentralized future, where markets are fair, accessible, and censorship-resistant. At Polymarket, your work directly impacts the evolution of decentralized finance and information. If you're eager to make a significant impact in the nascent but rapidly expanding blockchain space, Polymarket offers an unparalleled opportunity. Join us to contribute to a platform that empowers users, challenges traditional financial systems, and puts the power of prediction back into the hands of the people. We're looking for individuals who are not just skilled but are also true believers in the potential of crypto to create a more informed and equitable world. Come build the future with Polymarket.
Ready to Apply?
To submit your application for this position, please visit Polymarket's official website and follow their application process.