Y/n

Play a fun story

Founding Engineer

$120K - $300K0.50% - 2.00%San Francisco, CA, US
Job type
Full-time
Role
Engineering, Full stack
Experience
Any (new grads ok)
Visa
Will sponsor
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Gabriel Birnbaum
Gabriel Birnbaum
Founder

About the role

Hi, my name is Gabriel and I'm the founder of Y/n.

Y/n is an app where you can create, share, and play interactive stories. Today, 100K+ teenagers spend 3+ hours a day in the app playing characters in text stories of their own making.

A few facts about why you should join Y/n:

  • We launched 8 months ago and are already one of the top books apps in the world (reached #4 app in the App Store this month).
  • We serve ~2T tokens (~200M user messages, growing 40% MoM) per month with a team of 3.
  • We raised $14M from top VCs.
  • My co-founder Eric is a technical genius. He trained the first-ever image editing AI in the world. Before Y/n, I was the founding designer at Substack.

We're looking for a founding full-stack engineer to own most of the app surface and our personalized recommendations infrastructure. This is a role with a lot of ownership across the product!

What we expect from you:

  • You’ve built actual infrastructure (not just pushed to Vercel).
  • You’ve worked at a startup or built meaningful side projects.
  • You’re into fandom, reading, and fanfiction!
  • You're based in (or willing to relocate to) San Francisco.

Hollywood authored the dominant stories of the last century. Our mission at Y/n is to create the most entertaining stories of the next one. If creating this entertainment machine sounds interesting, do reach out.

About the interview

  1. Send us your Github
  2. 30 min interview with Eric (CTO)
  3. Live coding session with Eng team
  4. 30 min call with Gabriel (CEO)
  5. Offer

About Y/n

Y/n is the most entertaining app in the world.

On Y/n, you play a character in a story. Be a boarding school transfer student and get the boys to fall in love with you, or figure out a jailbreak with Sherlock Holmes.

Your choices change the story and how characters feel about you (oops!) – so no two playthroughs are the same (but you can rewind).

■ Play interactive romance, drama, fanfiction, mysteries, fantasy, fluff (or angst), and more. ■ Discover 1M+ stories written by the community. ■ Write and publish your own interactive stories.

Download Y/n and play a fun story yourself!

Y/n
Founded:2025
Batch:S23
Team Size:2
Status:
Active
Location:San Francisco
Founders
Gabriel Birnbaum
Gabriel Birnbaum
Founder
Eric Meier
Eric Meier
Founder