Baselayer

Senior Software Engineer, Identity Graph

San Francisco, California · Senior

Sponsorship not specified$230k-$340kDetected 8 days ago

PythonFastAPISQLPostgreSQLGCPOpenAPIResearchUnderwriting

About the role

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 solving real-time entity resolution at a scale no one else has cracked - fusing dozens of data sources into a single business identity graph and resolving any entity in milliseconds.

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.
Deep Postgres expertise: schema design under live load, EXPLAIN ANALYZE as a reflex, zero-downtime migration tooling.
Career rocket fuel: You'll help build the foundation of a high-growth startup, working side by side with experienced founders and team members who've done it before

Salary Range: $230k - $340k + Equity
Competitive compensation: We pay well and back it with equity. We want you to think and act like an owner

401(k) with company match: We match your contributions so your future self benefits too
Flexible PTO so you can recharge without red tape
A $250 monthly gym stipend to help you bring your best self to work, and everywhere else
Benefits on us: We cover 100% of your health, dental, and vision premiums.
HSA contributions included: We contribute to your HSA on applicable plans, so your coverage works as hard as you do
$230k - $340k + Equity

It's a graph AI problem, a retrieval problem, and a fraud-modeling problem stacked on top of each other.
The technical depth is real.
You'd be joining a small team where the data moat is defensible, the research problems are open, and the infrastructure you build becomes load-bearing for businesses.
Ownership is real.
Velocity is real.
There's no layer of process between an idea and shipping it.
We're at an inflection point - the graph is built, the match rates speak for themselves, and the hardest problems are still ahead: graph embeddings, fraud propagation models across the business network, real-time traversal at sub-100ms latency, and expanding the identity layer beyond finance into every platform that needs to trust a business.
If you want to work on something foundational - the kind of infrastructure that gets built once, and everything else runs on top of - this is it.

This listing is sourced directly from Baselayer's careers page and normalized into a canonical job model.