When I joined google, the only way I could get hired was as a test engineer on an SRE team, which I then converted into an SRE via mission control and wrote docs and shared them internally with folks until the principal engineers read them, and then they gave me infinite resources (Google Exacycle) to do everything I described above. I used that to get promoted to Staff SWE, and used that to launch a product (Google Cloud Genomics) and do some interesting machine learning for drug discovery (BTW, at this point mny career was effectively complete- I had set out to do everything I wanted, and was interested in what to do next).

The above happened because (beyond a wide range of boosts provided by parents and country) I have an intense drive, wanted to work at Google more than anything, and exploited the internal structure of the company to maximize my power. I kept networking to meet more and more people, and by meeting those people I got more access and support. I helped build up a team- Google Accelerated Sciences- which does basically what I thought Google should be doing all along.

unfortunately, at that point Google politics and personalities intervened and I was kicked out of the cool kid's club.