Interview prep

Mobile Developer interview questions

13 questions mobile developers get asked, grouped by type. Under each one are the skills it is really testing, so you can pick a story from your own work that shows them.

Technical

  1. How do you design a feature so it still works reasonably well when a user loses network connectivity mid-use?
    Tests: system design, reliability
  2. You get a crash report from a device and OS version you don't have on hand. How do you investigate it?
    Tests: debugging, attention to detail
  3. How do you approach keeping an app's install size and startup time under control as it grows?
    Tests: performance, code quality
  4. Users report that your app drains their battery faster than expected. How do you investigate?
    Tests: performance, debugging

Situational

  1. An app update gets rejected by the app store review process close to your planned release date. What do you do?
    Tests: delivery risk, communication
  2. A feature needs a sensitive permission, such as location or contacts. How do you decide when and how to ask the user for it?
    Tests: user experience, attention to detail
  3. A new operating system version breaks behavior your app relied on. How do you handle it?
    Tests: reliability, debugging
  4. You're maintaining the same feature on two mobile platforms and one gets a bug fix the other doesn't. How do you keep them from drifting apart?
    Tests: code quality, process

Behavioral

  1. Tell me about a time you disagreed with a coworker and how you handled it.
    Tests: conflict resolution, communication
  2. Describe a project or task that did not go well and what you did about it.
    Tests: ownership, reflection
  3. Give an example of persuading someone to adopt an idea they initially resisted.
    Tests: influence, communication
  4. Walk me through how you decided what to work on when you had more requests than time.
    Tests: prioritisation, judgment
  5. Tell me about a time you had to learn something new quickly to get a job done.
    Tests: learning agility, ownership
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Mobile Developer interview questions — Gurus Consulting