Member of Technical Staff: Full-stack

Monk; New York (NY); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Competitive salary

Meaningful equity

Full health/dental

Complete ownership of your work

Motivated teammates

Job summary

Monk is seeking a Member of Technical Staff: Full-stack to join our team in Flatiron, NYC. You will own and architect core systems including billing engines and payment integrations, and ship full-stack features end-to-end. With a strong focus on AI capabilities, you will mentor engineers and maintain high code quality.

If you have over 6 years of production-level full-stack experience, deep TypeScript fluency, and are excited to build in person, we want to hear from you!

Qualifications

• 6+ years of production-level experience shipping full-stack products.
• Deep TypeScript fluency across backend and frontend.
• Experience with modern web infrastructure tools.

Responsibilities

• Own and architect core systems including billing engines and payment integrations.
• Ship full-stack features end-to-end without handoffs.
• Set technical direction and make architectural decisions as the company scales.
• Mentor other engineers to maintain code quality standards.

Skills

Production-level experience shipping full-stack products

Deep TypeScript fluency

Experience with modern web infrastructure

Ability to take ownership

Extreme drive and a track record of high-quality production

High code quality standards

AI-native mentality

Tools

Next.js

Vercel

Supabase

Job description

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.