Most iOS developers learn Combine or Rx.
Senior interviews test something deeper:
Can you reason about async data flow and trade-offs?
Reactive programming isn’t about operators.
It’s about when it simplifies your system… and when it makes it worse.
That’s where most candidates struggle.
Key signals interviewers look for:
- Understanding streams over time
- Managing complexity (not adding it)
- Handling threading, lifecycle, and cancellation
- Explaining why reactive vs async/await
Reactive is not just a tool.
It’s a thinking model.
👉 Read the full guide:
https://medium.com/@dkvekariya/senior-ios-developer-interview-guide-2026-guide-to-reactive-programming-and-swift-in-depth-c1c9217963b2
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