Assistast back end Developer for LMS Online Education Platform in php. -- 2

Our organization own an online web platform writen in php. The structure is complicated and has many modules. We need one experienced in php developer as a new member of the team to work on daily basis (6/7) for 4 hours per day for long time with daily basis briefing. Every time we start a new module we set a timetable estimation but the project is hourly paid because every day we test and change our plans and directions if this is mandatory for the project.