Full-Stack Engineer – Music-Learning AI

**You write solid backend code and you play an instrument. Now combine the two.** A seed-stage AI startup in San Francisco helps people learn the music they love. Upload any song and its own AI transcribes it in minutes, into notation, guitar tabs, MIDI or a playable piano view. Hundreds of thousands of people use it every month, and it's growing around 30% a month, entirely organically. The team is small and fast, and they're music people building for music people. **What you'll own** * The backend and infra behind a busy, fast-growing web app * Keeping it stable and fast: bug fixes and improvements from your first weeks * Growing into product work after a few months, side by side with the product engineer * Code you write and reason through yourself, using AI tools as help rather than a replacement **Must-haves** * A real passion for music: you play an instrument and read music. A music project you built, at a hackathon or for fun, is a big plus. * Full-stack, with your strength on the backend (front-end-only profiles won't fit) * 2+ years of industry experience after graduating * You think through problems yourself instead of handing all the thinking to AI * Working from the San Francisco office, 9-9-5 (relocation is fine) **Bonus points** * Experience at a consumer, music, audio or learning-app company * A backend system you ran in production at real scale * A hard production problem you diagnosed and solved yourself **What's in it for you** * $150k–$200k base * Work that connects directly to your passion * Full insurance (medical, dental, vision, life), vacation, a gym at the office, and meals provided * Visa sponsorship available **Good to know** * Full-time, on-site in San Francisco, 9-9-5 * You'll share product ownership with a teammate; this isn't a role where you set the product vision alone Process: intro call with the CTO technical round (take-home or live) on-site* offer **When you apply, please include** * Your CV (PDF), your **LinkedIn URL**, and GitHub or a link to something you built * The instrument you play, and any music project you built * A backend system you owned in production, and the scale it ran at * Your current location, and confirmation that on-site San Francisco works for you * Your visa or citizenship status, and if you'll need sponsorship * Your base salary expectation, your notice period, and any other interview processes you're in Does this sound like you? Apply now. If you're a match, we'll be in touch within 3 working days. RnB Consultancy | Netherlands | 3604 AB Maarssen | KvK 71489703