Member of Technical Staff: Backend

Monk•New York City, NY

1d•Onsite

About The Position

Monk is an AI-native accounts receivable (AR) platform for B2B companies helping businesses get paid fast. The AR stack is broken. Finance teams still chase payments with spreadsheets, reconcile AR in spreadsheets and use software that was built a decade ago. We think this is one of the largest, most ignored problems in B2B software. Trillions of dollars sit in outstanding invoices and the tools to unlock cashflow are stuck in the past. We are rebuilding Monk with AI, speed, and real craftsmanship. We are already doing this for over $1B of accounts receivables. We are backed by leading investors and our founders bring significant experience to our company. We are early, the upside is enormous, and the hardest, but also the most rewarding work is ahead of us.

Requirements

4+ years building and operating production backend systems. You've built them, broken them, and scaled them yourself
A T-shaped engineer: deep in at least one area, broad enough to push the rest forward, and you do it in TypeScript/Node
Strong with our stack and able to go deep where it counts: Postgres, AWS, data pipelines, observability
You understand the tradeoffs you're making and you know when something has to be rebuilt instead of patched
AI-native, not AI-dependent. You move fast with it and you know exactly when not to use it
An owner. You don't file tickets about infrastructure problems. You fix them, and then make sure they can't happen again
Excited to build in person in Flatiron, NYC

Nice To Haves

Have experience with fintech or payments data systems
Have built backend infrastructure for LLM or agent products
Were a founding or early backend hire

Responsibilities

Build core agent infrastructure at the applied layer: Design and ship the system that powers Monk’s agentic products
Own systems end to end: Build and maintain enduring financial architecture designed for agents
Build for the future: Manage, evolve, and extend your architecture and design to thousands of use cases that slow down payment in B2B
Own reliability at scale: Build and own monitoring, alerting, and incident response to get our customers paid fast
Ship fast: Land changes that help customers daily and default to action