Cash Management System

Overview

Cash Management is an internal full-stack system for KBZ Bank’s cash operations — the tooling behind getting physical cash to where it’s needed across branches and ATMs. The core of it is a cash request raised against a location, then fulfilled through a transport (cash-in-transit) management system that moves the money and tracks the operation through to completion.

My role

I joined as a full-stack engineer, taking the project over from a senior engineer to continue the build. Picking up an in-flight internal system meant getting up to speed on the existing React frontend and NestJS API quickly, then carrying the work forward across both the request side and the transport-fulfillment side, backed by Oracle DB.

The workflow

At a high level the system connects two halves:

1. A branch or ATM raises a cash request for the funds it needs.
2. That request is fulfilled through the transport management system, which schedules and tracks the cash-in-transit movement that satisfies it — through to completion.

Tying the request side to the transport side in one system is the point: the people asking for cash and the people moving it work from the same source of truth instead of separate, disconnected processes.

What I took away

Taking a live internal system over from a senior engineer is its own skill — the first job isn’t writing code, it’s understanding someone else’s architecture and decisions well enough to extend them safely. Doing that across the full stack, on a system a bank’s operations actually depend on, is where a lot of my comfort with unfamiliar codebases comes from.