Write one page with the absolute priorities to make your time at work better (both for you and the startup) and speak with the highest person in charge with rec

Write one page with the absolute priorities to make your time at work better (both for you and the startup) and speak with the highest person in charge with recruitment, face to face behind closed doors. If the chat is constructive, you both will agree a plan and a timescale to make you happy and productive for the common goals.