Senior Data Scientist, Fraud & Risk Analytics

Unchain Data; New York (NY); On-site; USD 150,000 - 210,000; Full time

Benefits offered by this job

Salary & equity

Unlimited PTO

Health coverage

401k match

MacBook Pro setup

Job summary

Polymarket is seeking a Senior Data Scientist / Analyst, Risk to identify abuse patterns on our platform and translate findings into robust controls. You will partner with product and compliance to assess threats and to determine when to restrict trade or adjust onboarding and verification.

You will tackle adversarial problems, build detection rules, quantify exposure, and provide clear recommendations in a fast-moving environment where new products create new abuse vectors.

Qualifications

• 7+ years in risk, fraud analytics, trust and safety, or a similar investigative analytical role.
• Expert SQL. You can pursue a hypothesis across large behavioral datasets without supervision.
• Pattern recognition instinct: you can identify shared signals among accounts.
• Experience building detection rules or models and weighing false positives versus misses.
• Sound judgment about user impact and cost to legitimate users.
• Comfort working with compliance and handling sensitive findings appropriately.
• Plus: on-chain analysis, wallet clustering, blockchain forensics, ML background in anomaly detection/graph analysis.

Responsibilities

• Investigate and quantify abuse across the funnel, including multi-accounting and fake signups, bonus and promotion farming, wash trading, collusion, and market manipulation.
• Build detection logic that separates genuine users from coordinated behavior using on-chain, device, and behavioral signals.
• Turn investigations into monitoring with recurring reporting and alerting for new patterns.
• Size financial exposure of each abuse vector to help prioritization by cost.
• Partner with product on controls at onboarding, verification, bonus eligibility, and measure effectiveness.
• Support compliance with analyses behind investigations, escalations, and regulatory reporting.
• Work with analytics engineers to move detection logic into the modeled layer for reliability.
• Own end-to-end documentation of thresholds and rationale so others can follow without you present.

Skills

SQL

Pattern recognition

Risk analytics

Python

R

Compliance liaison

Tools

On-chain analysis

Wallet clustering

Blockchain forensics

Graph analysis

Job description

Polymarket is seeking a Senior Data Scientist / Analyst, Risk to identify abuse patterns on our platform and translate findings into robust controls. You will partner with product and compliance to assess threats and to determine when to restrict trade or adjust onboarding and verification.

You will tackle adversarial problems, build detection rules, quantify exposure, and provide clear recommendations in a fast-moving environment where new products create new abuse vectors.