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Erich Grundman

Portfolio

The mechanics, made playable.

Parcel economics are not complicated, they are just invisible. Each piece here takes one cost mechanism, models it on synthetic data I control, and lets you move the inputs until the behavior is obvious. Every dataset states where it came from, because none of it may come from an employer.

Working tools

Pkg 1 of 2Interactive model

Dim weight break-even

The box size at which dimensional weight overtakes actual weight, and what a packaging change is worth across a real order profile.

  • parcel
  • packaging
  • shipping cost
Pkg 2 of 2Interactive model

Parcel zone optimizer

Place one, two, or three fulfillment nodes, then see what the zone distribution and the blended cost per package do in response.

  • parcel
  • network design
  • shipping cost