It's hard to say what's my primary role. I do lots of stuff. From client-side development (HTML, JS, CSS), browser extensions development, UX design and consulting, to product design, product management and team leading. I am very curious. I believe that "to know" is much more valuable than "to guess", so I do lots of experiments and I try to measure everything. I am also very lazy. That makes me very good at automation and finding the easiest effective solution to any problem.