Nimbus — Digital Banking Platform
A multi-currency digital banking platform processing 2M+ monthly transactions with real-time fraud detection.
The Challenge
Nimbus needed to launch a regulated digital banking product in nine months, but their existing prototype couldn't handle multi-currency ledgers or the transaction volume projected for launch.
Manual fraud review was creating a growing backlog, and the compliance team had no real-time visibility into flagged transactions.
The Solution
We re-architected the core ledger service in NestJS with PostgreSQL and event sourcing, giving Nimbus an auditable transaction history required for regulatory review.
A real-time fraud detection pipeline built on AWS Kinesis and a custom rules engine now flags suspicious transactions within 400ms, with a dashboard for the compliance team to review and act instantly.
We ran the migration in parallel with the legacy system for six weeks, reconciling every transaction before full cutover to eliminate launch-day risk.
“Docorio didn't just write code — they acted like a co-founder. They challenged our assumptions early and helped us launch a platform that's now processing millions in transactions.”
Sarah Whitman, CEO & Co-founder, Nimbus Financial
Technologies used
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