AT&T Software Engineer interview questions

Brief 30 minute behavioral interview, coding challenge (1 hour), and onsite technical interview (1 hour). The phone interview was with the head of recruiting who was very accommodating and quick to respond. Scheduling the onsite took about two-three weeks after initial phone interview.

Overall 2 part process. First HR gives you call and read through the requirement and ask if you are experienced in it or not. Then resume is sent to the team and if they like your resume they invite you for in person interview. In second part, they ask you do to white boarding. They are looking for scalable/ high performant solution from you. All about threads/thread pool / concurrency. Overall, they are trying to prove they should get people from their India office as people here are not fit for the work they are doing. All Indians in the development team. In fact i saw no woman on the floor except for HR on that day.