Dear Sir!
I am so excited to see your request.
I am a senior Game Developer.
I have lots of experience to develop many Games using UNITY.
In the past, I have ever taken a part in making a large-scaled 3D-game developing using Unity, and also made lots of simple-2D-Games that can run on mobile by myself.
I am sure I can satisfy all your needs, and promise you to do my best for this project.
My motto is just one single-word "Credit based on Belief".
Whether you accept my request or not is your choice, but , it seems that I wanna help you and work together.
I can dedicate 30+hr per week for this job, we can negotiate working schedule.
Waiting for your kind response.
Have a nice day!