Answer technical-challenge and motivation questions

Prepare responses for these behavioral interview questions:

1. Tell me about the hardest technical problem you have solved. What made it difficult, what steps did you take, and what effect did it have?
2. Why are you interested in joining this company or team (the interviewer's organization)? Use the structured guidance below to answer these well in an interview: what to include, how to organize the story, and what interviewers are evaluating.

Overview: This question probes a candidate's most challenging engineering work and reasons for joining the team to evaluate technical problem-solving depth, communication of impact, leadership and ownership, and intrinsic motivation and cultural fit.