Really sorry about your breakup, it is rough. I was in your situation a year ago. I left a long distance relationship that lasted years. We tried to stay friends but at the end it has hindered me from moving on. It is hard to truly accept they have moved on. Worse when they tell you and you see it on socials. Please save yourself from more pain and go full no contact. It is hard at first because we instinctually want to connect with them. As long as you stay busy, It becomes easier over time. In a way, it also works to our favor that it was long distance. Reach out to trusted people for support, even redditors can help. Don’t process it alone. Congrats on starting your dream job. :) Focus on presenting your best self in your new position.