// Hacker Noon · 13 April 2026

Why LLMs Alone Can't Migrate Your Legacy Code, and What I Built Instead

A new system automates the migration of legacy SAS scripts to PySpark for enterprise clients. The system was built with deterministic parsing to understand the source code. Structured pattern extraction to capture business-critical data. Validation pipelines to catch what the LLM gets wrong.

Hacker Noon

@hacker-noon · Rejin Jose K

hackernoon.com

Hacker Noon@hacker-noon