I’m in the process of becoming self employed and have saved enough money for almost a year of joblessness.
To ease the transition I would however like to continue to work two days a week in my current position. I’ve got a unique position and it would be difficult to replace me (not impossible of course). I have developed a lot of systems for the workplace and my understanding of them is unique.
I’m a permanent employee with fixed hours, they can’t be changed I’ve checked this with HR. My manager is in early stages of hiring someone as a contractor to work for me to extend capability of my role. I would like to quit and offer to take that contract position at two days a week until they have fully replaced me.
I both like and respect my boss, and feel like this might be a dick move, on the other hand I’ve worked very hard and delivered a lot of wins for his department. Essentially I feel like it’s my life and I should go for the best situation for myself following several years of diligent and hard work.
What would be the best way of approaching my boss with this proposed plan for converting to part time?
Edit: My position consists of two main aspects; 1) Creation of new tools 2) Maintenance and customer support for tools I've already created. Moving to 2 days per week would stop 1 but allow enough time for 2. Training a successor might be tricky but not impossible in that time, easier if they have a strong relevant technical standing