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Fraud Data Scientist

Coinflow Labs · Chicago · On-site

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About Coinflow Labs

Coinflow offers businesses a tech-driven payment solution with features like global card acceptance, instant settlements, and built-in security. The platform also includes tools for developers to easily integrate payments into their applications. Backed by Digital Currency Group.

About the role

We're hiring a Fraud Data Scientist to be the analytical brain behind our fraud models. You'll dig into how our models and rules are performing, spot where fraud is shifting, and tell the team exactly which features, signals, and strategy changes will move the numbers. Found on 1752vc Careers, the job board for startup and VC roles.

What they're looking for

  • 4+ years as a data scientist or analyst working on fraud, risk, or abuse, ideally at a payments company, fintech, or marketplace
  • You've used analysis to measurably improve production fraud models or rules: new features, better thresholds, lower loss, higher approvals
  • Strong SQL and Python. Fluent with the stats and ML concepts behind fraud models (gradient-boosted trees, calibration, imbalanced data) even if you're not the one deploying them
  • Solid grasp of the fraud problem space: card-not-present fraud, account takeover, card testing, friendly fraud, chargeback reason codes, and how fraudsters adapt
  • Comfort with messy, imbalanced, delayed-label data and the judgment to evaluate model performance honestly on it
  • Experience designing and analyzing experiments where a false positive and a false negative cost very different amounts
More about this role

Coinflow is the next-generation payment service provider revolutionizing global financial infrastructure with stablecoins, AI-driven fraud prevention, and instant settlement. Coinflow enables businesses to grow faster with instant settlement, fraud & chargeback indemnity, global pay-ins, multi-currency FX, and unified payouts. Founded in 2023, the company serves marketplaces, fintechs, remittance providers, gaming platforms, and ecommerce merchants worldwide.

Since our seed round in 2024, we’ve achieved 23x revenue growth and scaled to multi-billion-dollar annual transaction volume. In response to this growth, Coinflow announced a $25M Series A in October 2025—led by Pantera Capital, CMT Digital, Coinbase Ventures, Jump Crypto, and Reciprocal Ventures—accelerating our mission to power the world’s fastest-moving businesses with innovative, reliable global payments.

Coinflow is proudly headquartered in Chicago, IL. Learn more at coinflow.cash .

We're hiring a Fraud Data Scientist to be the analytical brain behind our fraud models. You'll dig into how our models and rules are performing, spot where fraud is shifting, and tell the team exactly which features, signals, and strategy...

Read the full posting on Coinflow Labs's site ↗

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