Product Engineer (Full Stack), Scottsdale

The AI Advantage; Arizona; On-site; USD 90,000 - 120,000; Full time

Job summary

AI Advantage in Scottsdale, AZ is seeking a mid-level Full Stack Product Engineer to join a lean, two-week sprint team. You will own end-to-end delivery on a modern stack (Node.js/Express with MySQL for backend; React/Next.js, TypeScript, Tailwind for frontend) and focus 70% backend work.

This on-site, full-time role requires 4–6 years of production full stack experience, code review discipline, and US work authorization.

Qualifications

• 4 to 6 years building production full stack applications inside a professional engineering team with code review.
• Front-end: Next.js, React, TypeScript, Tailwind, iframes
• Cloud and hosting: Heroku and GCP
• US citizens and green card holders only. No visa sponsorship.

Responsibilities

• Own your work end to end on a lean senior team that ships in two-week sprints.
• Build and own the Customer Service Admin Suite for client account fixes.
• Maintain the Circle member experience and the plumbing that connects our commerce stack.
• Maintain, extend, and improve the affiliate system that drives growth.
• Ship every sprint with self-validated test cases and peer-reviewed changes.

Skills

Full stack development

React/Next.js

TypeScript

Tailwind

Node.js/Express

MySQL

Code reviews

AI fluency

US work authorization

Tools

Heroku

GCP

n8n

Job description

Full Stack Product Engineer at AI Advantage / Mastermind.com

Location: Scottsdale, AZ, 100% on-site (not open to remote)

Work Structure: Full-time, W2

Eligibility: This role requires US work authorization without sponsorship, now or in the future (US citizens and green card holders).

Tech Stack: Our stack is Node.js and Express with MySQL on the backend, and React, Next.js, TypeScript, and Tailwind on the frontend.

We are looking for engineers whose recent production work is in our stack, not adjacent ones (Java, .NET, or Python-primary backends are not a fit).

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What This Role Is

This is a hands-on, mid-level full stack seat (4 to 6 years), not a lead role. Roughly 70% backend and systems, 30% front-end.

You will own your work end to end on a lean senior team that ships in two-week sprints.

Our team has rebuilt the platform on a clean, modern stack, so you inherit ownership, not years of tech debt.

You will be building the tooling that keeps a large education platform running for real customers: the customer service admin suite that fixes accounts in one click, the Circle member experience members touch every day, and the affiliate system that drives growth. This is tooling and integration work with real leverage, not ticket-shuffling.

The person who fits is organized and autonomous, asks why before building, ships clean through peer review, and genuinely rolls with change when priorities pivot fast. This a pure build seat, pointed where it creates the most value.

What This Role Is Not

• Not a lead or management seat. You architect and ship, not run a team or defend a roadmap in meetings.
• Not a DevOps or platform-ops seat. No pagers, no babysitting deploys, so you spend your time building instead of firefighting.
• Not a solo builder's gig. If your entire background is personal projects with no professional team or code review, this is not a fit.
• Not an "AI writes it, I ship it" role. We want engineers who make sure what AI gives them actually works, not people who hand it off unchecked.
• Build a unified admin panel that lets a non-technical customer team fix accounts end to end in one click
• Own the plumbing that carries the whole company from point of sale into Circle
• Move work from to-do to done with clean hygiene and no one chasing you
• Own your own QA and ship through peer-reviewed pull requests, never work thrown over a wall
• Say "I don't think this is fully thought through, let's talk it through" before you write a line of code
• Set down yesterday's work for today's when priorities shift, without getting precious about it

...then we want to talk to you.

What You'll Own

Customer Service Admin Suite (Primary)

• The unified admin panel that lets Customer Service take a client end to end: one-click account, billing, and login fixes across one tool instead of five.
• This is the highest-leverage surface you will build, and what it can do keeps expanding.

Member Experience (Ongoing)

• The Circle member experience (login, billing, account management, lead flows) and the plumbing that connects our commerce stack to it, running smoothly end to end.

Affiliate System (Ongoing)

• Maintain, extend, and improve the affiliate system that drives growth.

How You Ship (Every Sprint)

• Own your work all the way to production: validate it yourself, walk a reviewer through your test cases, and ship through peer review.
• Keep clean progress and surface blockers early.

What We're Looking For

Requirements

• 4 to 6 years building production full stack applications inside a professional engineering team with code review
• Front-end: Next.js, React, TypeScript, Tailwind, iframes
• Cloud and hosting: Heroku and GCP
• Collaborative problem solving: you think fast with the team and pressure-test the plan before building, no rogue players
• Real AI fluency: you use AI as a craftsman's tool and make sure what it produces actually works
• US citizens and green card holders only. No visa sponsorship.

Strong Differentiators

• AI coding tools used well (Claude Code, Cursor), with the judgment to verify and own the output
• n8n or workflow automation experience
• Based in Scottsdale or Greater Phoenix
• 1 to 2 prior roles of roughly two years each, ownership. No job hopping

The Core Skill: Change Resilience

• Priorities here can pivot fast, and sometimes weeks of work get shelved the same day. Everyone says they are fine with that. Almost nobody is.
• The engineers who thrive treat a scrapped project as a redirect, not a loss. If that is genuinely how you are wired, you will do your best work here.