The first web browser made for work!

Founding Senior iOS Developer at SigmaOS

London, UK
Job Type
6+ years
Connect directly with founders of the best YC-funded startups.
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Ali Attar
Ali Attar

About the role


  • Build Chrome extensions system for WebKit in Swift
  • Salary £120k in salary and stock options + 0.5% equity in stock options
  • Get good perks and work from a dope office!

Does this sound like you?

🤔 Likes to solve hard problems

😤 Takes ownership of their tasks

🔊 Always communicates when there is an issue or a need


  • 5+ years industry / startup experience
  • Experience with SwiftUI
  • Experience with AppKit
  • Experience with GCP / AWS
  • Experience with PostgreSQL
  • Experience with iOS / iPadOS / macOS development
  • Experience with Xcode instruments

Bonus points

  • Experience with WebKit

What would you be doing?

You would make sure SigmaOS is the best browser for productive work.

You would work alongside the team to build out and maintain our extension system and our cross device syncing. You would take charge on making sure our app's performance always outperforms the competition!

Show me the money

We do our best to compensate everyone fairly, therefore we offer choice of stock options vs salary and additional equity on top of your base salary

💰 £89,000 in base salary

💸 you choose on a slider between £31,000 base salary increase and £124,000 stock options

🥇 0.5% equity in stock options


🏥  Private Healthcare included

🏡  £1000 for your set up

📚  £200 per month for health and wellbeing, (e.g mental health, gym, online courses & more)

💻  MacBook Pro for work

What’s next?

So wanna be part of building the future of the workOS? Well, apply now!

We have a pretty straight forward process with no fuss:

  1. Introductory 15 min call with us: This is where we get to tell you more about SigmaOS and meet you for the first time.
  2. 30 min Team/Culture fit chat: You'll jump on a call with Mahyad (CEO) where we'll gauge if we're a great team/culture fit for each other - it's a two way street!
  3. 15 min Technical challenge: You’ll chat with Saurav (CTO) on a Zoom call to check how your approach to produce code or solve problem is 🧑‍💻
  4. Come and work with us for two days: The best way to figure out if we can work together is by actually working together. You’ll get to meet the rest of the team and work closely with Saurav (CTO), Ali (CPO) and your potential future colleagues on SigmaOS related work! You will be paid for those two days 😊
  5. Make the offer: Finally after a reference check, if all is good and well we will contact you with our offer! 😊

Why you should join SigmaOS

The first web browser made for work!

SigmaOS is a new type of browser designed for founders, researchers, and content creators to make you better and faster at working on the web.

We are a YC backed company on the path to create the next era of browsers, what we call the workOS! 🚀

We became Product Hunt’s number 1 product of day, week and month during August! 🥇

After our success on Product hunt we didn’t slow down, we continued building the best product for our users with our users! ❤️