Backend Engineer; AI & Systems

Join to apply for the Staff Backend Engineer (AI & Knowledge Systems) role at Demand.io

$/yr - $/yr

Annual Bonus and Stock options

Demand.io is a profitable, founder‑led consumer AI commerce player driving $1B+ in annual GMV. We are the team behind Simply Codes (the #1 AI‑powered savings tool) and Product.ai (emerging deterministic AI shopping assistant).

We are seeking a Staff Backend Engineer to operate as a Technical Lead & Systems Architect
. This is not a standard IC role; it is a high‑leverage position for a builder who wants ֆown the technical roadmap for the “nervous system” of a next‑generation intelligence company.

We are pivoting from “Search” (finding links) to “Adjudication” (verifying truth). This requires a fundamental re‑architecture of how we ingest, process, and serve data. You will move beyond building features to architecting the neuro‑symbolic intelligence engine that powers our Here's entire ecosystem, setting the technical standards for the wider engineering team.

• Massive‑Scale Knowledge Infrastructure: Architect and build the intelligent, fault‑tolerant backend for our Commerce Knowledge Graph. Design distributed ingestion pipelines that process millions of data points, ensuring our AI agents have access to high‑fidelity, verified structured data.
• AI‑Native API Architecture: Design and implement high‑performance, real‑time APIs (gRPC, REST) optimized for agent‑to‑agent communication. Build the interfaces that allow menor Saison Reasoning Engine to interact with our Transaction Layer with