Rust Systems Engineer HVG Engine

Nebula is the system of state for enterprise agent workflows, and at its center is a Rust engine that owns how state is represented, stored, queried, and updated. The engine implements Nebula's Hierarchical Vector Graph (HVG) — structured nodes, typed edges, vector representations, and provenance — over a three-tier storage architecture spanning in-memory cache, local NVMe, and S3-compatible object storage. Over time, we expect more of its relationships and execution model to move into latent space.
This role owns and evolves that engine — query execution, indexing, concurrency, storage behavior, and performance as datasets grow from terabytes toward petabytes. It focuses on the performance-critical engine itself, not the cloud infrastructure and deployment systems around it.
What you'll work on