Need experienced C# MVC/JS Programmer to troubleshoot and work with me over teams to fix Json error in my application - Need support right away as job is critical

Need to troubleshoot and come up for a fix for an error I am seeing in my application (MVC application) - Need a highly experienced programmer who is available right away - Error during serialization or deserialization using the JSON JavaScriptSerializer. error - The length of the string exceeds the value set on the maxJsonLength property