Cobaltid

Staff Software Engineer

New York City · Staff+ · Full-time

Sponsorship not specifiedDetected 173 days ago

Distributed SystemsCode ReviewMachine LearningData EngineeringLeadership

About the role

Company Description We have an internet for money - but still can't tell real companies apart from fake ones.
While others focus on consumers, we separate real companies from synthetic ones.
With AI accelerating fraud rings and shell companies at global scale, distinguishing a legitimate business from a sophisticated fraudster is now one of the hardest problems in fintech.

Make critical infrastructure decisions (data modeling, system design, build-vs-buy) that will define how this platform scales for the next several years
Design and build core systems spanning graph storage, entity resolution, inference, and production data pipelines
Ship to production constantly - we're a small team and everything you build matters
Significant experience building production backend systems (we care more about skill and impact than years alone)
Cobalt ID is building the business identity infrastructure for the financial internet.
You'll make foundational decisions about how we model entities at massive scale, how we fuse messy data sources into a coherent graph, and how we build the inference layers for fraud intelligence.
You'll define what we build and how it works.

Experience with large-scale data processing infrastructure or distributed systems
Strong architectural instincts-you have opinions on how systems should scale, but hold them loosely
Comfort with ambiguity and fast iteration in an early-stage environment

Background in fintech, fraud detection, or identity systems
Experience with graph databases, entity resolution, or network analysis at scale
Experience with ML systems in production, particularly models applied to structured or relational data
Familiarity with data fusion from messy, heterogeneous real-world sources
You've built or scaled a platform that had to process tens of millions of entities with complex relationships between them

As a Staff Engineer, you'll own the technical vision and architecture of the system.

We're a small, tight-knit, and highly technical team.
Our founders and early team members come from Waymo, Google, Meta, Brex, and Virtu Financial.
We value technical depth and curiosity, low ego, and fast execution.
We've partnered with investors who understand the plumbing of the global financial system.
We recently raised a round led by Nyca Partners, with participation from operators who built the modern fintech stack at Ramp, Plaid, and Brex.
Work directly with founders, customers, and financial institutions to translate hard domain problems into technical solutions

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