I'm so sorry for your loss. And sorry I'm coming to this thread a little late, but I still felt it might be helpful if I reply.
I lost my father to suicide almost a year ago. It does get better, as I'm sure you've found out by now, but things will never be the same. A parent's suicide changes you forever.
When my dad first died, I felt physically ill. I was physically ill in some ways - digestive issues and headaches and insomnia. I had night terrors where I felt like this terrifying darkness was coming for me. After a few weeks, that horrible period came to an end.
I moved into this period where life was like a fog. I felt disconnected from everything and everyone - even my husband. Even though I was never physically alone, I felt more alone than ever. I had no emotions about anything, nothing mattered anymore. The only thing I felt anything about was the notion that life has no purpose. I questioned/worried if those thoughts it would lead me to suicide too. I felt like I had lost myself. Things were very grey for me at that time - somehow I managed to work and keep my job and stay married, but I didn't know if I would ever find myself again.
I was also irritable, sensitive and angry. If my husband even so much as touched a newspaper clipping about my dad, I freaked out. I was so afraid of losing anything tangible about my dad, cards, old presents, the funeral brochure - if there was even a fingerprint on them I would be furious.
All this to say, eventually I did start feeling more like myself. I started laughing again. I got my silly sense of humour back. I even planned my wedding (which I cared substantially less about without my dad there) and had an amazing time there - although I missed my dad immensely, I thought about what he would have wanted for me and I acted on that. I had a great time for my dad. A part of me senses that he is very happy for me too.
One thing that has been immensely helpful to me is conversations that I had with my dad when he expressed his wishes for me and for my life. He made it very clear to me that all he wanted for me was happiness. I've achieved a sense of peace that there is no way that my dad was thinking rationally when he took his life - the pain was just so intense in that moment that he felt he had no other option.
For me, that's really important to remember. Suicide is not rational. It's really difficult to come to terms with that, because we are wired to try to make sense of everything around us, particularly the loss of a loved one. But if you can wrap your head around the fact that your dad was not rational when he took his life, at least for me, I find that it helps a lot.
My advice to you would be to try to remember your dad for what he was to you. Write down memories you have of the good times. Remember the lessons he taught you and apply them to your life. You can keep your father alive in a way through imitation. For example, my dad had this game he used to play with kids - I make a point of playing that game with my nieces and nephews. Because my dad is not around to play that game, I see it as my duty to do that for my dad. It sounds like your dad inspired your career path - initially, your feelings might be to reject that because it is painful. I would advise you to stick with it, though, especially if it's something you are passionate about. If your dad prioritized work over spending time with friends and family and that was a bad thing, that might also be a lesson that he taught you - maybe you can still work in development but with the work-life balance that your father was unable to find. No one is perfect - my dad certainly wasn't, and that's okay to acknowledge too.
So, to cut a very long response short, does it get better? Yes. Time does heal, to a degree, but the loss will always be there. And in a way, it's a good thing. I can't imagine "getting over" my father's death. I mourn him and I miss him because I love him. In death, I still love him. The only way I could stop missing my dad would be if I didn't love him - and although his life ended and our physical relationship changed, my love for him will always remain the same.