I work in the tech industry in the US, where professional networking requires one to speak of his accomplishments, and to display his employment history publicly on LinkedIn, Does this expose one to al ayn? Should one hide where he works if for example he works at a prestigious company.

You have to be careful. How you can achieve that is by always making the adhkar (mentioning the name of Allah). If somebody gets impressed, you ask him to say, "Allahumma barik," and so on. Never forget the adhkar: 1. Of the morning and the night 2. Before sleep 3. After every salah This is something that people sometimes neglect. No, after every salah, make the adhkar as well, and recite the three Quls and Ayatul Kursi.