TCS (Tata Consultancy Services) Mobile Engineer Interview Questions

6400+ verified questions, indexed by team and level. Real questions submitted by candidates who completed TCS (Tata Consultancy Services) loops in the last 24 months.

About the TCS (Tata Consultancy Services) Mobile Engineer hiring loop

TCS hires across three tracks — TCS NQT (₹3.36 LPA), TCS Ninja (₹3.36–4.5 LPA), and TCS Digital (₹9–11 LPA). Each track has different rubric weights, coding-language acceptance (C/C++/Java for Ninja; Python added for Digital), and HR-round expectations.

Mobile rounds score on platform-native fluency, offline-first architecture, performance awareness, and security posture. iOS vs Android role-specific depth is expected; cross-platform breadth is a plus.

Topics covered in TCS (Tata Consultancy Services) Mobile Engineer interviews

  • 01iOS internals (Swift / Objective-C, ARC, GCD, SwiftUI vs UIKit, Core Data)
  • 02Android internals (Kotlin / Java, Coroutines, Jetpack Compose, Room, WorkManager)
  • 03Cross-platform (React Native, Flutter — when to pick vs native)
  • 04Mobile system design (offline-first, sync conflict resolution, push, background tasks)
  • 05App performance (cold-start time, frame rendering, battery, memory)
  • 06Mobile security (keychain / keystore, certificate pinning, jailbreak detection)

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