Android / iOS development guru

Looking for an Android development guru to make an app that controls a hardware device over ---------- S development experience is a big plus.

The job will start with an app with basic functionality during a trial period. If all goes well during the trial job then it will become a long-term position.

Questions

How many Android apps have you developed? Please include examples including specifics about what you coded if it was a team project.

How many iOS apps have you developed, if any? Please include examples including specifics about what you coded if it was a team project.

Where did you learn to code?

What other programming languages do you know?