How to quit a good job
Long story short, I got a job as an intern 1.5 year ago in the and I've been promoted to full time employee 1 year ago in the tech industry. I work in a small team and even though I wouldn't say we're really friends on a personal level, there is a great vibe in the team and we're very casual between us, manager included. My manager is really a good guy, found an arrangement with me so I can continue my masters degree and work full time. Honestly I can find no negative point to the manager and the team.
The thing is that I'll complete my masters degree really soon and I'm considering continuing to do a PhD. That would require me to quit my job and renounce to the relatively good pay I have (no issues with the latter still living with my parents lol and I have savings). I'm involved in important projects at my job, how can I quit without negatively impacting my team?
When should I inform my manager about my decision to quit? Enough for him to get an intern/full time employee and giving my replacement adequate training for my tasks/processes? 1 month? 2 weeks?
For those who would use the argument that it's just business and I should look for myself and not the company, I'd reply in advance that I was treated very well and putting my team in a short staffed position would be far from fair...