两名工程师用AI重构FedEx供应商交付平台，效率提升4倍

Two forward deployed engineers rebuilt a live FedEx supplier's delivery platform in 3.5 months. The original estimate was eight.

Their advantage did not begin with faster code generation, but with a repository-wide knowledge graph covering modules, dependencies, data flows, and domain language.

2 years ago you'd need 5 engineers and double the timeline for this output.

They mapped the entire repository into markdown files covering modules, dependencies, and data flows.

Agents read that map first, so generated code matched the real architecture.

That structure kept every task inside a context window the model could hold.

Humans reviewed all 122 merged pull requests, and the models wrote about 90% of the code.

You set up that infrastructure and two engineers produce what used to take a full team.

Kudos to @mardehaym’s Limestone Digital team.