I applied online. The process took 5 weeks.

Talked with a recruiter then had 2 1h tech screens about a week later (1 frontend, 1 general programming). The next day I heard these went well and scheduled the virtual onsite for two weeks later. It consisted of another 4 1h interviews (1 frontend, 1 general programming, 1 system design, 1 manager interview). The recruiter said we'd have a prep chat before these, but they never followed up to schedule it. I heard back about the onsite a week later. The recruiter called me to give feedback, and despite doing exceptionally well on the frontend interviews, they thought I didn't do well enough on the other technical portions.

General programming interviews started with a LeetCode type of problem, then added more parts that built on the last step.

Frontend interviews were building a React component. Started with rendering a simple data structure, then adding more features like fetching from a mock API.

The system design interview talked through data structures and algorithms I would use to build a feature related to Retool's product. No coding in this interview, but I explained some concepts using pseudo-code.