I've worked with browser development and testing for the past six years. Each part of the development chain has its interesting parts. Getting the browser engine to work and giving it a usable UI for an exciting new platform is great fun. Working on the browser engine itself, taking part in developing the web standards of tomorrow and making the stuff hundred million people use every day, is even better.

Commenting on whether or not the particular position in question would be good fit for you is however impossible without knowing more about your background, what you like and what you'd be doing, however. Let me know if you have any more specific questions.