DECLARE @JobToRun NVARCHAR(128) = 'My Agent Job'
DECLARE @dtStart DATETIME = GETDATE(),@dtCurr DATETIME
DECLARE @ExecutionStatus INT,@LastRunOutcome INT,@MaxTimeExceeded BIT = 0
DECLARE @TimeoutMinutes INT = 180 
 
EXEC msdb.dbo.sp_start_job @JobToRun
SET @dtCurr = GETDATE()
WHILE 1=1
BEGIN
    WAITFOR DELAY '00:00:10'
    SELECT @ExecutionStatus=current_execution_status,@LastRunOutcome=last_run_outcome 
    FROM OPENQUERY(LocalServer,'set fmtonly off; exec msdb.dbo.sp_help_job') where [name] = @JobToRun
    IF @ExecutionStatus <> 4
    BEGIN -- job is running or finishing (not idle)
        SET @dtCurr=GETDATE()
        IF DATEDIFF(mi,@dtStart,@dtCurr) > @TimeoutMinutes
        BEGIN   
            EXEC msdb.dbo.sp_stop_job @job_name=@JobToRun                   
            -- could log info,raise error,send email etc here
        END
        ELSE
        BEGIN
            CONTINUE
        END
    END
    IF @LastRunOutcome = 1  -- the job just finished with success flag
    BEGIN
        -- job succeeded,do whatever is needed here
        print 'job succeeded'                                   
    END
 
END