Hi sir.
I have experience of develop the chat app and have the project.
If you have the UI Design, this job is very simple and easy to me.
I am working for IT company as mobile developer for 5+ years.
As you can see from My portfolio, developed many mobile apps and work with many clients all over the world.
Your job description really caught my eye and it’s too fit to my skill.
I can finish your job from start to end with high quality in deadline.
Pls check my photofolio