Google L3 Software Engineer — referral to offer

How I applied

I was referred after reaching out on LinkedIn and sharing my resume.

Timeline

1. Recruiter call — role, background, logistics
2. Technical phone screen (DSA)
3. Onsite loop — 3 DSA rounds
4. Googliness (behavioural / culture fit)

Round-by-round

1. Recruiter call

Unexpectedly technical for an intro call — complexity of Bubble Sort and how heap operations work at a high level. Don't treat this as a pure logistics call; keep fundamentals warm from day one.

2. Technical phone screen

A graph problem. Not the hardest of the loop, but clearly designed to filter anyone without solid traversal basics.

3. Onsite 1 — Strings

String manipulation. The interviewer mostly watched how cleanly I handled edge cases while parsing/transforming.

4. Onsite 2 — Optimisation (Bucket Sort)

The toughest round for me. I first solved it with heaps at O(n log n); the interviewer kept pushing for better. Thinking out loud, I reached a bucket sort solution — constant time for this specific problem. Really a test of how far you can optimise a working solution under pressure.

5. Onsite 3 — Range queries

Hardest round of the loop: range queries on an array, with a follow-up that needed binary search to make querying efficient.

6. Googliness

A conversation rather than an interrogation — background, deep dive into projects and my exact contribution, and why Google specifically.

Verdict

Selected for L3.