iOS Developer

OneSignal’s 15 first-party Mobile and Javascript SDKs are installed into nearly 100,000 websites and applications that reach 900 Million unique users a month. Our SDKs must remain easy to install, work alongside other services and consistently improve as we add new features.

This is no small feat, but the effort is well worth it: Our clients rave about the quality, documentation, and ease of use of our service.

We're looking for a skilled developer to help us build upon and maintain SDKs across over a dozen platforms. The right candidate must have the skill and confidence to learn new programming languages, programming techniques, and fearlessly troubleshoot bugs in mobile devices and web browsers.


  • Writing code in Objective-C and Swift. Additionally writing SDK bindings for C#, Lua, C++, JavaScript, and more.
  • Writing high quality code in previously unfamiliar programming languages.
  • Creating and maintaining open source SDKs used by hundreds of thousands of developers.

We’re looking for someone who

  • Is a polyglot programmer and enjoys learning new programming languages.
  • Has built and published a native app for iOS.
  • Enjoys diving deep to find solutions to tricky bugs.
  • Gets excited about the opportunity to join a small but fast growing startup company.


  • Salary: $120k - $170k
  • Equity: 0.2% - 0.5%

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