The typical stages of a hiring funnel look like this: new candidate to screen, screen to onsite, onsite to offer, offer to acceptance. The respective ratios for each stage are: 17%, 32%, 31%, and 69%. On average, you'll look at about 88 candidates to make 1 hire. [1]

For CircleCI, their new candidate to screen is 25%. This is higher than the 17% average. Their screen stage looks considerably larger than I've seen at most companies: it's 4 different steps. From the 250 candidates, it looks like 7 go into an onsite. That's about 3% which is significantly below the 32% benchmark. Of those 7, 3 will receive offers (it's not mentioned how many accept those offers). So the onsite to offer is 42%, which is higher than the 31% average. We can't determine the offer acceptance from the data.

I think it's great they're looking at the funnel and conversion rates. Most recruiters aren't able to tell you these figures which is a red flag. The only way to improve those metrics is to know them first and then measure how changes impact each stage.

[1] https://medium.com/@jmtame/surprising-insights-from-talking-...