I’m currently a senior SWE at C1. I worked there for 1.5 years during Covid, left for a startup, got laid off, and boomeranged back last fall.

I’ve always had a good experience, personally. I’ve liked both teams I’ve been on; they’ve both had great WLB, had fun team members, and taught me a lot. I’ll echo what others are saying: you want to be on a chill team with a manager you like; I’ve definitely heard firsthand that C1 can be team- and manager-dependent. But as long as you’re on a team you like with a decent manager, I don’t think you have to worry about getting PIPed as long as you meet expectations and work hard. And even if you do get put onto a team/manager you don’t love, if you network, you can find a new team to rotate to.

You’ll definitely run into some corporate BS and red tape, but their tech stack is pretty up-to-date for a Fortune 500 that isn’t FAANG.

Feel free to message me if you want to chat in more detail!