Senior Full Stack Engineer

MrBeast is a media and entertainment company building a consumer membership ecosystem for a global audience. The Senior Full Stack Engineer will ship consumer-facing features end-to-end across APIs, backend services, data models, and web or mobile clients, while owning quality and helping establish technical patterns and engineering culture.

Responsibilities:

• Ship consumer-facing features end-to-end — from API and data model through to the client experience — inside the first ideal squad
• Work across the stack daily: backend services, APIs, and the client layer (web and/or mobile, React Native or similar is fair game)
• Partner tightly with the Lead Product Designer and the rest of the squad in short, fast iteration loops — built to show, not just tell
• Use AI coding agents and modern tooling as a default — your output should feel multiplied, not the same as it was a year ago
• Own quality at consumer scale: performance, reliability, and the details that matter when millions of users are on the other end
• Help set the technical patterns and culture the rest of Product Engineering will build against as the team grows

Requirements:

• You have shipped production features inside consumer products used by millions
• You're comfortable across the stack — you go deep where it matters and integrate cleanly everywhere else
• You aren't just curious about AI; you are burning through tokens, using coding agents daily, and integrating modern AI tooling deeply into your development workflow
• You have a track record of actually owning and shipping features, not just participating inside a large team
• You have the startup experience to build from zero with a nimble team, plus the big-tech exposure to know what breaks when a product hits massive scale