FintechWeb

Realtime ledger for a neo-bank

Built a streaming ledger and operations console that reconciles millions of transactions per day across multiple rails, with sub-second visibility for finance ops.

Client: Stride Bank
Timeline: 14 weeks
Team: 5 engineers
Year: 2025

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87%Faster reconciliation

12k+Daily ops users

99.95%Pipeline uptime

$0Lost transactions

What we walked into.

Stride was reconciling transactions overnight in Excel, which meant a 16-hour blind spot for ops and a daily fire-fighting routine when records did not line up.

Five payment rails feeding into one general ledger
Audit trails were stitched together by hand
Scaling from 50k to 5M transactions per day with no rewrite budget

Our approach, in four moves.

Tight feedback loops, weekly demos, code you fully own.

01→

Map every flow

Two-week embed with finance and engineering to model rails, edge cases, and SLAs before writing code.

02→

Streaming spine

Kafka + a typed event schema replaced the nightly batch with a continuous, replayable pipeline.

03→

Ops console

A typed Next.js console for exceptions, manual matches, and approvals, owned by finance.

Battle test

Two weeks of shadow runs against the legacy stack before a hard cutover, zero rollback.

Gallery

A look at the build.

What we built

Every surface, considered.

Streaming ledger

Sub-second updates across every rail.

Auto-matching

Rule + ML matchers covering 96% of records.

Exception queue

Finance handles only what truly needs a human.

Audit-ready

Every change carries a signed, replayable trail.

Role-based access

Granular controls for ops, finance, and audit.

Observability

Built-in dashboards and alerting on every stream.

Tech stack

What's under the hood.

Frontend

Next.jsTypeScriptTailwindtRPC

Backend

Node.jsPostgresKafkaRedis

Infra

AWSTerraformDatadog

Quality

PlaywrightVitestOpenTelemetry

Outcomes

The numbers we are proud of.

87%Reconciliation speed-up

From overnight batch to continuous matching, freeing 6 ops FTEs.

5M+Daily transactions

Sustained throughput with zero dropped events in the first 12 months.

99.95%Pipeline uptime

Measured at the consumer side over a rolling 90-day window.

0Manual exports

Finance no longer reaches for spreadsheets to close the day.

“We went from chasing yesterday's numbers to running the bank in real time. The team didn't just ship software; they reshaped how finance and engineering work together.”

Priya MenonVP, Finance Operations · Stride Bank

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