Dear, to use the job Talend on Knowage you have to:
1) Check if the folder [TOMCAT]\resources\DEFAULT_TENANT\talend\RuntimeRepository\java exists.
2) Create a new subfolder using the name of Talend Project's
3) Export the job from Talend on folder
[TOMCAT]\resources\DEFAULT_TENANT\talend\RuntimeRepository\java\[Project name], as zip format
4) extract the zip
Best Regards
Angelo