Senior Identity Graph Engineer — Real-Time, Scalable

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

Benefits offered by this job

Flexible PTO

Hybrid in SF

Equity

Health/Dental/Vision

401(k) Match

Gym stipend

HSA contributions

In-person collaboration

Job summary

Baselayer is building the identity graph for US businesses and consumers, ingesting public records, sanctions lists, and more to power fraud detection and KYB onboarding. The senior engineer will own product features across the surface end-to-end: schema design, data ingestion, entity resolution, API endpoints, scope and multi-tenancy.

Based in San Francisco, the team works in a hybrid model with in-office presence four days per week.

Qualifications

• Shipped product features from ingestion to storage to API to customer, in production.
• Owned a Postgres schema that supports real money or real decisions, with active evolution.
• Strong async Python with experience running async services at scale.
• Deep PostgreSQL expertise: schema design under live load, EXPLAIN ANALYZE, and zero-downtime migration tooling.
• FastAPI (or close equivalent): shipped real APIs with auth dependencies, OpenAPI contracts, and structured response models.
• Built multi-tenant APIs with load-bearing access control 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 high volume, ingestion pipelines with timely processing, API latencies that stay stable.
• Build multi-tenancy and access control: every query scoped by org/user/permission at the data layer.

Skills

Async Python

PostgreSQL

FastAPI

OpenAPI contracts

Multi-tenant APIs

API authentication

Performance optimization

Tools

PostgreSQL

OpenAPI

Cloud Run

Cloud Tasks

Cloud SQL

GCP

Job description

Baselayer is building the identity graph for US businesses and consumers, ingesting public records, sanctions lists, and more to power fraud detection and KYB onboarding. The senior engineer will own product features across the surface end-to-end: schema design, data ingestion, entity resolution, API endpoints, scope and multi-tenancy.

Based in San Francisco, the team works in a hybrid model with in-office presence four days per week.