A long answer short, I'm a full stack developer.
You can see my profile.
I'm 100% sure with C/C++/C#, Java, PHP, JSP, MySQL, Javascript, HTML, CSS, Android, iOS, etc.
Anything you want, I'll satisfy you.
The most important thing is that I've rich experience for developing softwares which are connected to hardware devices, for example J2534 (for OBD).
You won't regret when you hire me and we could expect our long-term cooperation as well.
Regard.
Whenever you need me, you can call me.