Software Engineer
Hybrid (London, UK)£60k - £100k + equityFull-timePosted 11mo ago
About the role
Software Engineer role at SigmaOS focusing on building the Chrome extension system for WebKit, cross-device syncing, and performance improvements for SigmaOS browser.
Responsibilities
- Build Chrome extensions system for WebKit in Swift
- Build out and maintain the Chrome extension API for WebKit (Chrome’s extensions in a Safari engine)
- Work on cross-device syncing to provide seamless user experience
- Ensure SigmaOS performance outperforms the competition
Qualifications
- 3+ years industry / startup experience
- Experience with SwiftUI
- Experience with JavaScript
- Experience with iOS / iPadOS / macOS development
Skills
Required:SwiftUIJavaScriptiOS / iPadOS / macOS development
Benefits
- Private Healthcare included
- £1000 for your set up
- MacBook Pro for work
- £200 per month for mental health, gym, online courses & more
- Generous maternity, paternity, and peternity leave
Last updated May 6, 2026. Interested? Apply on the company site.
About SigmaOS
The new home for your internet 🏡
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. You work 7+ hours a day on the web. Buried in a sea of 100+ tabs and 10+ web-apps 🤯, you constantly lose context for why you did what you did, and are always one click away from being distracted. We took apart the browser for you, and rebuilt a new experience from the ground-up, for the FASTEST and most PRODUCTIVE work. ⚡
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