Via GFT Technologies, I worked solely on GFT's client, the London Stock Exchange Group (LSEG), specialising on their main public-facing websites, both Drupal 8 and 7 development.
https://www.londonstockexchange.com/ Drupal 8 development front-ended by Angular JS, incorporating a REST API later and integrated with many ancillary systems including Java applets, custom APIs to other LSEG systems and data feeds. Included significant custom module development, and a heavily modularised back-end content management approach.
https://www.lseg.com/ Drupal 7 development, I did some work on general site maintenance and bug-fixing.