Senior Identity Graph Engineer — Real-Time Entity Resolution

Baselayer; San Francisco (CA); Hybrid; USD 230,000 - 340,000; Full time

Benefits offered by this job

Flexible PTO

SF office presence

Salary + equity

Career growth

Health benefits

401(k) match

HSA contributions

Gym stipend

Transparent culture

Job summary

Baselayer is building the most comprehensive identity graph of US businesses and consumers. We ingest public records, normalize and link data to power fraud detection, KYB onboarding, portfolio monitoring, sanctions screening, and customer-facing APIs.

We’re hiring a senior engineer to own features across that surface end-to-end: schema design, data ingestion, entity resolution, API endpoints, multi-tenancy, and performance under real customer load. Based in SF with a hybrid 4 days in office.

Qualifications

• Shipped end-to-end product features touching ingestion to storage to API to customer, in production.
• Owned a Postgres schema that real money or real decisions depended on, and stayed on top of its evolution.
• Strong async Python with experience running async services at scale.
• Deep Postgres expertise: schema design under live load, zero-downtime migration tooling.
• FastAPI (or close equivalent): shipped real APIs with auth dependencies, OpenAPI contracts, and structured response models.
• Built multi-tenant APIs where access control is load-bearing and scoped correctly at the data layer.

Responsibilities

• 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.

Skills

Async Python

PostgreSQL

FastAPI

Multi-tenant APIs

API design

OpenAPI contracts

Scale at production

Data ingestion pipelines

Tools

Cloud Run

Cloud Tasks

Cloud SQL

PostgreSQL tooling

Job description

Baselayer is building the most comprehensive identity graph of US businesses and consumers. We ingest public records, normalize and link data to power fraud detection, KYB onboarding, portfolio monitoring, sanctions screening, and customer-facing APIs.

We’re hiring a senior engineer to own features across that surface end-to-end: schema design, data ingestion, entity resolution, API endpoints, multi-tenancy, and performance under real customer load. Based in SF with a hybrid 4 days in office.