Position: Senior Javascript Developer
Category: JavaScript
English level: upper
Years of experience: 7

Improved average Lighthouse score in the app from ~20/100 to ~70/100 while mentoring the team about web performance optimization.
Reduced CI build time from ~13m to ~5m with the same functionality, saving the billable time.
Implemented a service worker to cache assets, significantly improving the user impression about the app.
7 years in commercial web development. I like Angular, but have been working with React for the past few years. 
Have been leading the team. Have extensive experience in performance optimization of web applications - and I am deeply passionate about it.
I prefer to work as a front-end developer without having to dig down in backend.