Wednesday, 28 October 2026

The Programmers Keeping Old Banking Systems Alive

Close-up of JavaScript source code on a dark screen

Behind many of today’s banking apps sit systems written decades ago, and a small group of specialists is responsible for keeping them running.

Banks said replacing the older systems is slow and risky, so they are hiring engineers who can read the old code and training younger staff to take over. Many of the specialists are close to retirement.

Experts said the work is rarely noticed until something fails. They argue for steady investment in modernisation rather than waiting for a crisis.

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