Software Engineer
AI, Infrastructure
Location
San Francisco, California, United States
Work type
Hybrid
Employment
Full Time
Experience
1-5 years
Compensation
$120K - $300K per year
Posted
3d ago
Summary and responsibilities
Role overview
Summary
Y/n is seeking a Software Engineer to join as one of its first engineers, taking significant ownership across product and infrastructure. This role involves building personalized recommendation systems and developing features for both mobile and web applications, adapting and growing with the company.
Hi, my name is Gabriel and I'm the co-founder of Y/n.
Y/n is an app where you play the main character in a story written for you. Be the new kid at a boarding school and get everyone to fall for you, or plan a jailbreak with Sherlock Holmes. Every text you send changes the plot and how characters feel about you, so no two playthroughs are the same.
Our mission at Y/n is to create the most entertaining storyteller in the world, and give it to everyone.
Why you should join us
People love Y/n:
Users spend on average 3+ hours playing Y/n everyday
We are top #10 books apps in the world (reached #4 app in the App Store last month), even though we just launched
We raised $14M from top VCs
We work on interesting technical problems:
We serve ~3T tokens (~300M user messages, growing 40% MoM) per month with a team of 4
We manage a LOT of compute!
Training an AI to be fun and creative is incredibly interesting
The founders + team are fun to work with:
My co-founder Eric trained the first-ever image editing AI in the world
Before Y/n, I was the founding designer and one of the first employees at Substack, where I learned a lot about product and media
Together, we previously co-founded Can of Soup, a hit AI image sharing app, which you can read about in the New York Times
Some examples of what you would do
You'd be one of our first engineers, with real ownership across the product and the infrastructure. In practice that could mean:
Building our personalized recommendation system infrastructure
Building features in our mobile and web application
The role will adapt and grow as we do, so don’t worry if you haven’t worked on recommender systems or ML yet!
What we’re looking for
You’ve built actual infrastructure (not just pushed to Vercel)
You’ve worked at a startup or built meaningful side projects
Optional: you’re into fandom, reading, games, or fanfiction!
You're willing to relocate to San Francisco. If you do not have US work authorization, we can help with that
Technology
Our mission to solve one of the hardest challenges in computing: to train an AI to write the most creative stories in the world. It brings its own fun sub-challenges: we run our own datacenter, collect data in-house, and serve trillions of inference tokens each month.
Interview Process
Send us your Github
30 min interview with Gabriel (CEO)
Technical with Eric (CTO)
Possible take-home or work trial
Offer
Updated 3d ago
Candidate fit
Skills and qualifications
Additional skills
Experience
1-5 years
How this role is positioned
Role classification
Job domains
Industries
Employment
Full Time
Contract duration
Permanent
Hiring type
Direct
Global hiring
Location specific
Offer details
Compensation and benefits
Compensation
$120K - $300K per year
Location, schedule, and role shape
Work setup
Work conditions
Bandwidth profile
Context on the employer
Company snapshot
Company
Y/n
Team size
Growing team
Location
San Francisco, California, United States
Y/n is an app where you play a character in your story. Be a boarding school student and get the boys to fall in love with you, or plan a jailbreak with Sherlock Holmes. Stories are made for you. Your texts change the plot and how characters feel about you, so no two playthroughs are the same (but you can rewind). There's a Y/n story for every mood: romance, fanfiction, fluff, mystery, and more. Discover 10M+ stories created by the community. Can't find the one you want? Write and publish your own.
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Software Engineer
San Francisco, California, United States • Full Time