Fidelity interview notes, page 1 of 2

“This question is wider than it looks.” The rest of the author's notes on Backend Engineer interview at Fidelity, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is the kind of question where you can start confidently and then slowly realize how many layers there are.” The rest of the author's notes on Backend Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Started with the DENSE_RANK() approach because it felt cleanest, wrapping it in a CTE and filtering where rank = 3.” The rest of the author's notes on Software Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is a lot to hold in your head at once.” The rest of the author's notes on Software Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I went straight for the brute force: take the shortest string, iterate over all its substrings, check each one against the rest.” The rest of the author's notes on Software Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I went in thinking this was just a warmup and kind of winged it.” The rest of the author's notes on Software Engineer interview at Fidelity, Recruiter / HR Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started rambling about coverage percentages and could tell that wasn't landing.” The rest of the author's notes on Software Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I had a story ready but fumbled the 'what did you learn' part.” The rest of the author's notes on Software Engineer interview at Fidelity, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This question is broader than it looks.” The rest of the author's notes on Software Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I knew the basics: Spring only rolls back on unchecked exceptions by default, and rollbackFor lets you extend that to checked ones.” The rest of the author's notes on Backend Engineer interview at Fidelity, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.