Backend Engineer (AI-Native) — Risk Infrastructure & Integrations

Coris, Palo Alto, California

What you will do

What you'll do

Own processor and platform integrations. Build and operate ingestion from Stripe, Adyen, Fiserv, TSYS, Repay, and new processors as we sign them: APIs, webhooks, and batch file feeds. Make them correct, idempotent, observable, and PCI-safe.
Own the partner API and customer-specific work. Extend the v2 API, build per-customer configuration and signals, and work directly with customers' risk and ops teams to turn a vague report into a fix, fast.
Build the risk engine. Add signals and rules to the DAG engine that scores merchants and transactions; design Postgres schemas, indexes, partitions, and aggregations that stay fast at billions of rows.
Run it in prod. Celery workers, backfills, deadlocks, circuit breakers, latency, Sentry monitoring. You ship it, you own it.
Use AI everywhere it earns its place. Coding agents for first drafts and refactors, AI review on every PR, and LLMs inside the product (dispute agents, document parsing, structured extraction). You'll also help set the team's standards for how we use these tools.

About Coris

Coris is the AI platform for risk and financial operations. Platforms, marketplaces, payment providers, and banks - GoFundMe, Clio, Cherry, and a growing list - use Coris to onboard merchants faster, monitor them continuously, and act on fraud without adding headcount. One customer described us as "Cursor + Lovable for risk teams."

We're backed by Y Combinator, Lux Capital, and Pathlight, founded by payments-domain experts, and growing quickly on customer pull. We're a small team; this hire owns a large share of the backend.

👥 Who you'll work with

Coris was started by Vinodh (CEO) and Shyam (CTO). We've each spent 20+ years in fraud and risk management, running risk engineering, operations and product teams at Google, eBay, PayPal and WePay. You'll work directly with both of us in Palo Alto.

🚀 Why this role matters

Every Coris decision runs on data we pull from payment processors and platforms: Stripe, Adyen, Fiserv, TSYS, Repay, and more, over APIs, webhooks, and SFTP file feeds - hundreds of millions of events a month, billions of rows in Postgres. On top of that sits a signals and rules engine, an account graph, and the partner-facing API our customers build on.

Here's the honest version of the work. Files arrive out of order over SFTP. One processor sends dates in UTC, another in the merchant's local time, and neither says which. A processor's decline code lives in a different column than the spec says. A webhook ships malformed JSON at 2am. A backfill worker runs out of memory on a 40B-row table. A customer's risk lead says "our numbers look off" and needs an answer today.

We're hiring the engineer who will own all of that end-to-end, and who thinks it's the interesting part - because every integration we make reliably is one a competitor hasn't, and that's the moat. Getting the boring work right every time is how enduring companies are built!

How we work

Bias toward action and measurable impact; we ship fast, measure, and iterate with real customer feedback.
Everyone owns their code in prod.
AI-first development: agents write, humans own. Every PR gets an AI review and a human one if necessary.
In-person, 5 days a week in Palo Alto. Like any high-growth startup, we go well beyond the usual 40–50 hours a week.

Backend Engineer (AI-Native) — Risk Infrastructure & Integrations

What you will do

What you'll do

Backend Engineer (AI-Native) — Risk Infrastructure & Integrations

What you will do

What you'll do

Your first 90 days

Nice to have

About Coris

About Coris

How we work

Similar jobs at other companies

Full-Stack Engineer - Cortex Team

Senior Backend Engineer - Connect Team

Integrations Engineer

Back End Engineer

Senior AI Platform Engineer

Software Engineering Manager

Coris

Compared with similar jobs