Writing by Schalk Pienaar on software architecture, legacy modernisation, API design and engineering leadership, drawn from two decades building platforms in financial services.https://www.schalkpienaar.dev/https://www.schalkpienaar.dev/blog/modernising-a-trading-platform-without-stopping-the-desk/https://www.schalkpienaar.dev/blog/modernising-a-trading-platform-without-stopping-the-desk/Big-bang rewrites of front-office systems rarely end well. Here is how I approach changing a legacy platform while traders keep using it every day.Mon, 26 Oct 2026 00:00:00 GMTArchitectureLegacy systems.NET