An online casino built with great care for their customers.
My role was to handle multiple small bugs in authorization and authentication as well as migrating knockout.js app to React. The architecture is really complex and it required seniorty level of knowledge. We were using some services like Contentful, Cloudflare and Keycloak. I was part of the scrum ceremonies.
One of the latest task was to enable US players to see the correct error message. Since US players are not allowed to use this app, they were supposed the see the error message customized for them. They were getting general error, instead of US error message. My task was to detect location of the player and then display the correct error message.