Full Stack Engineer, Scottsdale (On-Site)

Location: Scottsdale / Greater Phoenix, on-site preferred (open to US remote for strong candidates). US work authorization required without sponsorship (US citizens and green card holders).

About Mastermind.com

Mastermind.com, built in partnership by Tony Robbins and Dean Graziosi, is the number one online platform for people who want to market and monetize their knowledge. We are an all-in-one ecosystem for education, entertainment, implementation, and community, serving entrepreneurs worldwide who are committed to growth, clarity, and results. Behind that platform is a small, senior engineering team that builds the tooling members and our customer team rely on every day: the admin suite that solves almost anything in one click, the member experience, and the affiliate system that drives growth.

About the Role

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 own your work end to end on a lean senior team that ships in two-week sprints. The team recently rebuilt the platform on a clean, modern stack, so you inherit ownership, not years of tech debt.

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 is a pure build seat, pointed where it creates the most value.

Responsibilities

• 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.

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.
• 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.

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.
• Backend: Node, Express, MySQL, Redis.
• 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 (on-site preferred).
• 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. 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.

Pay

$105,000 - $120,000 depending on experience, plus benefits.

Tech Stack

Node.js and Express with MySQL on the backend, and React, Next.js, TypeScript, and Tailwind on the frontend.