Hello,sir.
How are you?
No problem!
I am a senior android developer.
I have 5+ years of experience to develop various android projects with login function, backend api & databases so your job is very easy for me and my major skills.
You can count on me from my portfolio and good reviews.
Here are my faviourite projects.
I am very confident that you will be completely satisfied with the quality, timeliness, and professionalism of my work.
Please contact me with a reasonable price for this project in more detail.
I am hoping to hear from you soon.
Best regards.