Can I work for as a software engineer for a company that also does pornography?

I am a software engineer in India and striving Muslim. Recently I got new job offer from a company and after all the legal clarification, I accepted the job offer. But recently I heard from my friend the company also does work for a pornography website. My work is not going to relate with that in any manner but that company do the work in that field. Please suggest me with the authentic hadith or Quran Ayath. Should I work with them or not?