Senior Platform Engineer (Backend & Infra)

Our backend works. It was built by a small team moving fast, and it now needs to scale from 100 to 1,000 facilities and beyond. It also has to become safe enough to act on its own. Dosing changes, pump sequencing, and setpoints are increasingly executed by software on live plants, which means every action must be observable and every deploy reversible. This role owns that safety rail. You'll be…