Member of Technical Staff: Full-stack

Monk is an AI-native accounts receivable platform for B2B companies. We automate billing, collections, and payments so finance teams can turn outstanding invoices into cash, faster.

We believe the AR stack is broken and the finance function deserves much better. We are bringing AI, speed, and real craftsmanship to a space that has been ignored for too long.

We are looking for a Member of Technical Staff: Full-stack to join us in NYC in person. We do not care about your education, age, or past titles. All that matters is whether you can ship, lead, and raise the bar for everyone around you.

What you will do

• Own and architect core systems: billing engines, payment integrations, collections workflows, AI agents, and the infrastructure underneath all of it

• Ship full-stack features end-to-end, from database schema to API to UI. No handoffs

• Set technical direction. Make architectural decisions that hold up as we scale

• Mentor other engineers and raise the quality bar across the codebase

• Work shoulder to shoulder with customers and feed what you learn directly into what you build

• Build with AI as a core capability, not a feature bolted on

Who you are

• 6+ years of production-level experience shipping full-stack products

• Deep TypeScript fluency across backend and frontend

• Experience with modern web infrastructure: Next.js, Vercel, Supabase, or comparable tools

• Owner. You do not wait for specs. You figure out what needs to be built and go build it

• Extreme drive and a track record of getting things into production, repeatedly, at high quality

• You set the standard for code quality and you hold others to it

• AI-native. You default to using AI to move faster. You see it as a multiplier, not a novelty

• Excited to build in person in Flatiron, NYC

• Bonus if you are: (1) ex-founder or founding engineer, (2) have shipped fintech or payments products, (3) world-class in a domain

Why join

• Competitive salary, meaningful equity, full health/dental

• Freedom and trust. You will have complete ownership over your work and real architectural authority

• We are all in. Expect motivated teammates who ship fast and hold a high bar

• Experienced founders with real traction and happy customers

• You will produce more here in a month than you would at most companies in a year

• Build in person in Flatiron, NYC. It is more fun

We hire for intensity, craft, and attitude. Everything else can be learned.