> I'm not thinking of quitting over this or anything, but it seriously bums me out. I don't know if I have a future at this company if the boss thinks I'm not a good dev, and I really like it here. A month or so ago they added someone else to my project and I trained him on my code, and he's super smart and capable, and I'm thinking that now they probably feel that they could fire me if they wanted and not lose much.
You need to start applying to other companies immediately. Please take this as a MAJOR warning that they are setting you up to fire you. There are many reasons why they might do this, but you've ALREADY TRAINED YOUR REPLACEMENT. Changes are good that other person is either cheaper or better qualified and they want to free the chair/pay up for them.
I've been in this exact situation and it's better to just hit the job boards as fast and hard as possible. Given 100 years, this manager wouldn't change their opinion of you. You were blindsided and scolded without your direct manager's involvement. If you "stay loyal" you'll either be fired or treated the same way over and over. If you have 6 months of Rust and Computer Vision experience it should be pretty easy to find new work right now. This is the best job market in decades, take advantage!
You need to start applying to other companies immediately. Please take this as a MAJOR warning that they are setting you up to fire you. There are many reasons why they might do this, but you've ALREADY TRAINED YOUR REPLACEMENT. Changes are good that other person is either cheaper or better qualified and they want to free the chair/pay up for them.
I've been in this exact situation and it's better to just hit the job boards as fast and hard as possible. Given 100 years, this manager wouldn't change their opinion of you. You were blindsided and scolded without your direct manager's involvement. If you "stay loyal" you'll either be fired or treated the same way over and over. If you have 6 months of Rust and Computer Vision experience it should be pretty easy to find new work right now. This is the best job market in decades, take advantage!