The problem
Distributing vaccines across a country is a logistics problem with a hard constraint: the cold chain. Shipments have to be tracked in real time, and any break in temperature control has to be visible quickly, because a lapse can spoil the product before it ever reaches a patient.
What I built
I helped build a nationwide vaccine logistics platform with real-time tracking and cold-chain monitoring, using PHP and Vue.js on PostgreSQL. The platform followed shipments across the distribution network and surfaced cold-chain status so the condition of stock was visible throughout its journey.
Outcome
Nationwide vaccine distribution was tracked in real time, with cold-chain monitoring giving visibility into the integrity of every shipment.