Surviving the Rewrite - Managing Risk and AI Memory Loss in Large-Scale Development

Thu, 18 Dec 2025 10:50:00 +0000

TL;DR:

I recently undertook a project that terrifies most engineers: rewriting a massive, critical infrastructure automation tool from scratch. I moved from legacy Bash to Python without writing a single line of manual code - relying entirely on AI agents. Here is how I managed the risk, the architecture, and the “memory loss” of LLMs to build a production-grade tool.

The Stakes

This wasn’t a simple CRUD app. This tool manages infrastructure for multiple teams. A logic error here doesn’t just throw a stack trace; it could wipe an entire environment or cause immediate customer impact.

Stop Handing Out Tools Start Growing Engineers

Sat, 13 Sep 2025 00:45:00 +0000

Stop Handing Out Tools. Start Growing Engineers

I’ve seen this happen too many times. A new project kicks off, and the team hears:

“Here’s the tool. Here’s the plan. Just deploy.”

It feels efficient. But it skips the most important step: exploration.

When engineers are told what to use, they don’t learn why . They never see how others solve the same problem. They miss the chance to break, test, and truly understand. And over time, they stay stuck—good executors, but not real decision-makers.

Engineering on Vignesh Ragupathy

Surviving the Rewrite - Managing Risk and AI Memory Loss in Large-Scale Development

TL;DR:

The Stakes

Stop Handing Out Tools Start Growing Engineers

Stop Handing Out Tools. Start Growing Engineers