After graduating high school in 2015, I joined Heap. While there I worked on scaling their cluster of Postgres instances that has around a Petabyte of data. I eventually took over and lead the database team there.
While at Heap I shipped a large number of performance improvements and cost savings. You could say I was the primary person who scaled Heap. Due to the number of cost reduction projects I shipped, I was given the nickname "Michael Margins".