Skilled .NET Developer Needed (C#)

Job ID: 38175620

Budget: $10 – $30 USD

I'm in need of a
Hello and Thank you for joining such a wonderful Journey,
I'm looking for a senior developer C3, for a 1 year of work.

for now, for this current Gig,
i need 1 fix for 1 problem.

what is the problem?
Launching the app duration time increasing when longer im outside the app.
1: First time user opens the app they put their Email and Password, Then they Logged-in = 1-2 Seconds to see feed
2: If they close the app / Minimize the app they are still logged-in - Waiting 1 minute, Re-opening the app = 10 Seconds for feed
3: If they close the app / Minimize the app again, Waiting 1 hour = 40 seconds for the app to show feed

The logic is: If user is still logged-in (didn't click on Logout)
they should always skip login step.
same as in Facebook and in all other apps

of what api?
Client\login

when?
Changes, depends of how long Account was already logged-in
First time response: milliseconds (First time login)
seconds time: 5 seconds (User remained logged-in)
third time: 40 seconds (user remained logged-in)

How?
Create new DB:
1:CMD: sqllocaldb create "StagingQA"
2:MSSQL connect screen: (localdb)\StagingQA
3:MSSQL DataBases > Restore DB > Import DB File (Show all files)
4:MSSQL Security: Add dbo.admin user to this DB,
User and Password are located on
Backend Project Appsettings.json
5: Run the Project: Webapi (Set it locally)
6: Verify working: API Client\login with user: testing48blablog.com
password: 111158541 highly skilled .NET developer with expertise in C#. This will be a vital asset to my project.