Founding Engineer; Full Stack

Position: Founding Engineer (Full Stack)
# Founding Engineer (Full Stack)
Peasy Be an Early Applicant Full Timemid Seattle, Washington, US $150k – $180k Posted Today##

Role Overview Peasy is hiring a mid-level Founding Engineer (Full Stack). This is a full-time role in Seattle, Washington. Part of Peasy's Fullstack hiring, posted today. The posted range is $150k to $180k; applications are still in the early window, before most candidates have applied. Full responsibilities, required qualifications, and the apply link are listed in the description below.## Resume Keywords to Include Make sure these keywords appear in your resume to improve ATS scoring

TypeScriptSQLCSSReact

Next.jsTailwind

SupabaseRESTSign up free to auto-tailor your resume with all these keywords and get a higher ATS score## Job description

Founding Engineer (Full Stack)
Full-Time
* Competitive Equity
* Free Healthcare
* West Coast required (Seattle Preferred)
About Peasy Peasy is the operating system for independent CPG brands (the things you buy at a store, from food to home cleaning supplies). Running a CPG business today means juggling spreadsheets, disconnected tools, and guesswork across inventory, purchasing, production, and sales. We replace that chaos with one platform that integrates with the tools brands already run on, like Shopify and Quick Books.

The software is 100% free. We make money on the payment transactions that flow through it. We have brands actively using the platform, lots of early traction, and $2M raised with 2+ years of runway. We believe Peasy can be a generational company in the mold of Toast: the operating platform for restaurants, valued at $25B and making 85% of its revenue from payments.

The Role As our founding engineer, you'll work directly with the founders to shape Peasy's product, architecture, and engineering culture from the ground up. You'll own features end-to-end, make foundational technical decisions, and build the systems that scale us to thousands of users. Brands trust us with the operational backbone of their business, so what you ship has to be beautiful, performant, and rock solid.###

Who You Are
* A builder who ships. You take ideas from 0→1 and take pride in the craft of what you put your name on.
* AI-native. You build with AI every day as real leverage, and know when to trust it and when to think for yourself.
* An owner, not a passenger. You see the problem, pick it up, and carry it to done—without waiting to be told what matters.
* At home in ambiguity. Early-stage means no map. You create clarity instead of waiting for it.
* A genuinely good teammate. Low ego, high standards. You disagree well and care more that the work is right than that you were.
* Bought into the mission. You want independent brands and small businesses to win.

What You’ll DoOwn feature development end-to-end, from prototype to production. Make foundational calls on architecture, infrastructure, and tooling. Help build Beacon and the AI-driven workflows at the core of the product. Deepen integrations with the systems brands rely on (Shopify, Quick Books). Ship fast, iterate on real feedback, and establish the engineering practices and culture the team will grow on.### Basic Qualifications
* West Coast required. Seattle strongly preferred. We work best in the room together. U.S. work authorization required.
* 5+ years of full-stack engineering experience, shipping production systems with modern frameworks.
* Deep Next.js experience. Our entire app runs on Next.js (App Router) with React and Type Script. This is the day-to-day, so you should be strong here, not just familiar.
* Solid SQL experience, plus building and consuming REST APIs and third-party integrations.
* Strong product sense and a track record of executing quickly in ambiguous environments.
* Comfort working with LLMs.Nice to have: experience with LLM/AI products (prompting, evals, agentic workflows—we use Anthropic and Codex APIs); payments/fintech (Stripe, Moov, Plaid); commerce/ERP/inventory software or building for SMBs; CPG or retail familiarity; prior 0→1 or founder experience.

Our Stack You don't need every item on this list, but it's what you'll be working in day to day:
* Framework &…