Senior Software Engineer, Identity Graph

Baselayer is building the most comprehensive, accurate, and continuously-current identity graph of US businesses and consumers. Every entity, officer, address, relationship, and public record we can responsibly source - ingested, normalized, linked, and kept fresh. That graph powers fraud detection, KYB onboarding, portfolio monitoring, sanctions screening, and a growing surface of customer-facing API products. We're hiring a senior engineer to own product features across that surface end-to-end: schema design, data ingestion, entity resolution, API endpoints, scope and multi-tenancy, and performance under real customer load.

Ingest and normalize heterogeneous public records into the graph, owning the full pipeline: ingestion to normalizer to repository to API surface.

Build and maintain entity resolution and linking systems - matching the same business or person across sources where keys don't line up, names are misspelled, and addresses are formatted six different ways.

Design and ship customer-facing APIs for search, lookup, monitoring, and webhook delivery - built for engineers who'll be live in production within a day of signing up.

Own schema design and zero-downtime migrations on a database hot 24/7.

Optimize performance and scale: query patterns for 10x volume, ingestion pipelines that finish before the next batch arrives, API latencies that don't drift as the graph deepens.

Build multi-tenancy and access control: every query in the system scoped by org/user/permission at the data layer.

Entity resolution / record linkage / fuzzy matching at scale.

Search infrastructure - full-text, fuzzy, or vector - kept in sync with a Postgres system of record.

KYC/KYB/fraud/underwriting data-pipeline experience.

Address parsing/normalization at country scale.

Webhook delivery infrastructure: retries, signing, idempotency, and ordering guarantees.

GCP experience with Cloud Run, Cloud Tasks, Cloud SQL, and batch pipelines.