Full Stack Engineer — Node/Express + React (On-site Scottsdale)

Mastermind.com; Arizona; On-site; USD 110,000 - 160,000; Full time

Job summary

Mastermind.com in Scottsdale, AZ, seeks a hands-on Full Stack Developer (4–6 years) to own end-to-end features on a lean, senior team. Roughly 70% backend and 30% frontend, focusing on the admin suite, member experience, and affiliate system.

This role requires on-site work and US work authorization without sponsorship. You will work in a modern stack: Node.js/Express with MySQL on the backend; React, Next.js, TypeScript, and Tailwind on the frontend.

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
• Collaborative problem solving: you think fast with the team and pressure-test the plan before building
• 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.

Responsibilities

• Customer Service Admin Suite: build a unified panel for end-to-end client fixes across one tool.
• Member Experience: ensure login, billing, account management flows run smoothly end to end.
• Affiliate System: maintain, extend, and improve growth-driving links.
• How You Ship: own work through production, validate with tests, and ship via peer review.

Skills

Full stack

React/Next.js

TypeScript

Tailwind

AI fluency

Tools

Node.js

Express

MySQL

Heroku

GCP

Job description

Mastermind.com in Scottsdale, AZ, seeks a hands-on Full Stack Developer (4–6 years) to own end-to-end features on a lean, senior team. Roughly 70% backend and 30% frontend, focusing on the admin suite, member experience, and affiliate system.

This role requires on-site work and US work authorization without sponsorship. You will work in a modern stack: Node.js/Express with MySQL on the backend; React, Next.js, TypeScript, and Tailwind on the frontend.