Full Stack Developer
Mastermind.com · Scottsdale, AZ · 1 mo ago
On-siteEngineering$105k–$120k/yrFull-time
About the role
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.
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
- Maintain, extend, and improve the affiliate system that drives growth
- Ship the Customer Service Admin Suite (primary)
- Ship the Member Experience (ongoing)
- Ship the Affiliate System (ongoing)
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
Qualifications
- 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
Skills
- The core skill: Change Resilience
Benefits
Eligibility: This role requires US work authorization without sponsorship, now or in the future (US citizens and green card holders).
Pay
$105,000 - $120,000 depending on experience, plus benefits.
Schedule
Full-time, W2.