After taking over the modules of the service we’ve been asked to modernize, we’ve noticed that they were pretty old, based on server-side rendering and rather slow. That’s why the first thing we had to do was to upgrade the existing elements. We updated PHP and React to the newest version, and decided to introduce strongly-typed TypeScript language.

After that, we restored and upgraded server-side rendering to make sure that everything works as necessary. We also refreshed it to make the service works faster. Also, we introduced lazy loading to make all the sections load separately – it significantly shortened the loading time.

With the aforementioned new Data Finder platform and its API, we had to prepare everything from scratch. We decided to go with the newest version of PHP, with the Symfony framework, and we chose PostgreSQL as one of the most advanced databases. Wanting to deliver the cleanest code possible, we based the frontend part of the service on TypeScript and React. Moreover, we wrote a lot of detailed automated tests to make sure all the components work properly and securely.