Pros
I was part of a company that got acquired by Kin + Carta, and then Valtech. The folks who I worked with at the original company who are still at Valtech are some of the kindest people I've worked with in my career. We had great hiring practices back in the day. I was well-supported.
Cons
The company management are duplicitous and willing to cheat their employees out of significant sums of money. When we were acquired by Kin + Carta, senior management told us that we would be eligible for a prorated bonus based on our previous employment contract. They led us on about this for 11 straight months, at which point they revealed (for reasons unknown) that they had known the entire time they would be unwilling to pay the prorated bonus. This matters because our salary/bonus ratios were changing under the acquisition. I took a ~15% loss year-over-year, meaning that I lost over $10k in income. Nobody ever took responsibility for this decision. My trust in them was shattered irreparably. Career growth opportunities are scarce, and it is well known if you're on the bench you'll be let go within weeks. The company was doing so poorly for so long, and I didn't see any signs while I was there that the ship would right. Until I see the C-Suite change completely, I would never recommend this job to anyone.