Banking

FinTech Intelligence Platform

Real-time fraud capture at scale

A streaming fraud-intelligence engine scoring millions of transactions per minute.

-58%
Fraud loss
<40ms
Latency
5M/min
Scale
FinTech Intelligence Platform
Client
A digital-first bank processing 5M+ transactions per minute at peak
Timeline
13 weeks from architecture to production traffic
Team
1 AI engineering pod + bank risk & infra teams
The Challenge

Where the old way was failing

The bank's rules-based fraud engine caught patterns it already knew, while novel fraud rings adapted within days. Losses were growing 20% year over year.

Batch scoring meant fraudulent transactions often cleared before they were ever evaluated — detection that arrives after settlement is just reporting.

False positives were freezing legitimate customer payments, generating support load and churn among the bank's highest-value users.

The Solution

What we built

01

Streaming feature platform

We built a real-time feature store computing behavioral, device, network, and velocity signals on the live transaction stream — every score uses data that is milliseconds old, not hours.

02

Ensemble scoring under 40ms

Gradient-boosted models, graph-based ring detection, and anomaly detectors vote on every transaction inside the authorization window, so fraud is blocked before money moves.

03

Adaptive learning loop

Analyst decisions feed straight back into training data. The system retrains on a rolling window, tracking concept drift so new fraud patterns degrade the model for days, not quarters.

Stream ProcessingReal-Time Feature StoreGraph MLEnsemble ModelsMLOps & Drift MonitoringCore Banking Integration
The Results

What changed for the business

Fraud losses fell 58% in the first six months of production.

End-to-end scoring latency held under 40ms at 5M transactions per minute.

False-positive rate dropped 44%, cutting wrongly-frozen payments nearly in half.

New fraud patterns are now neutralized in days through the adaptive retraining loop.

We went from finding fraud in yesterday's reports to blocking it inside the authorization window. It changed the economics of our risk team.
Head of Risk · Digital-first bank

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