Execute a C# program via PowerShell remotely using Java

Environment: Windows 10 (Java) -> Windows 10 (PowerShell and C#) Java: 1.8.0_252

Trying to remotely execute a C# program via PowerShell from Java. Seem to be having issues with the path. The C# program is in a subdirectory under a shared drive.

import java.io.*;
public class CallCSharp {
    public static void main(String[] args) {
        try {
            ProcessBuilder builder = new ProcessBuilder("powershell.exe", "/c",
             "\\SharedDrive\\Data\\Bin\\Program.exe \\\\10.1.1.1 -u user -p password");
            builder.redirectErrorStream(true);
            Process p = builder.start();
            BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String line;
            while (true) {
               line = r.readLine();
               if (line == null) {
                    break;
               }
                System.out.println(line);
            }
        } catch (Exception e){
           e.printStackTrace();
        }
    }
}

The error returned is

The term '\SharedDrive\Data\Bin\Program.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

The path is correct and the C# program can be run successfully. Suspect I am not formatting the ProcessBuilder call correctly.