Location: California, USA / San Francisco, California
Level: Senior
Type: Hybrid (2 days/week in-office)
Employment: Permanent
Salary: $140,000 – $170,000 + Equity (0.5%–0.8%) + US Health Insurance

About Margins

At Margins, we’re building the go-to app for book lovers.
Our vision? To be the first thing one billion people think of when they think of books.

We started with a beautifully crafted native iOS app to help users track, discover, and engage with books — focusing on the 20 million Americans who read a book a week and the hundreds of millions who aspire to read more.

Since our launch on Christmas Eve, we’ve achieved:

  • 100,000 users
  • 13 million books tracked
  • 250,000 hours of reading logged

Now, we’re seeking a San Francisco-based iOS Engineer to help us take the app to the next level — and win an Apple Design Award.

The Team

We are:

  • Paul (Founder & CEO, SF)
  • Paulo (Founding Engineer, Brazil)
  • Nick (Founding Designer, SF)

Between us, we have:

  • Read over 5,000 books
  • Founded 5 companies with $35M+ raised
  • Led product, software, and AI initiatives at startups that have raised $300M+
  • Built open-source Swift libraries with 5,000+ stars
  • Developed social apps, AI apps, and even a Kindle competitor (Daylight)
  • Studied at Stanford (CS, Education, Business)

Our Advisors & Investors include:

  • Founder of Goodreads
  • Head of Marketing at Notion
  • Founder of Twitch
  • Top BookTok influencers and bestselling authors

FAQ

  • Tech Stack:
    SwiftUI (local-first, MVVM, Structured Concurrency, @Observable), Supabase, GraphQL, TypeScript, Next.js, Vercel, Python
  • Compensation:
    $140,000–$170,000 base salary + 0.5–0.8% equity + US Health Insurance
  • In-person:
    2 days/week in our San Francisco office
  • Runway:
    3+ years
  • Monetization Strategy:
    Subscriptions, book sales, publishing partnerships
  • Product References:
    Spotify, Duolingo, Netflix, Day One, Instagram Stories
  • Why Now:
    AI (LLMs), BookTok explosion, self-publishing boom, creator economy rise, dissatisfaction with traditional social media platforms
  • Book Recommendations:
    Gideon the Ninth, Braiding Sweetgrass, Blindness

Technologies You’ll Work With

  • SwiftUI
  • Supabase
  • GraphQL
  • TypeScript
  • Next.js
  • Vercel
  • Python

Requirements

Must-Haves:

  • Proven experience shipping multiple native iOS apps to the App Store
  • Ability to work in-person 2 days/week in San Francisco
  • Strong passion for collaborative product design

Nice-to-Haves:

  • Ability to contribute across web, backend, or design
  • Recent experience at an early-stage startup
  • A drive for continuous product improvement
  • Previous founder experience
  • Long-term commitment mindset (multiple years in past roles)
  • Described as **”obsessive” about your craft
  • Can name at least three books that changed your life

Your Responsibilities

  • Ship high-quality production features reaching millions of users
  • Elevate the app’s craftsmanship, focusing on performance, edge cases, and fine details
  • Ensure strong test coverage to prevent recurring bugs
  • Integrate the latest Apple platform features into our product

Ready to join a mission-driven, book-loving team and build something meaningful?
Let’s create something unforgettable together.

If you are interested, please send your CV to iuliana@euroasiarecruiting.com.
We look forward to hearing from you!