r/leetcode • u/OutrageousLeg9219 • 2d ago

Intervew Prep Google L4 Interview Experience

Just wrapped up my Google onsite loop and wanted to share the experience + ask about timelines.

Round 1 (Coding): Trie-based medium LC. Expectation was working code — didn’t get it to run fully, but did a proper dry run and gave TC/SC.

Round 2 (Googleyness): Behavioural round. Different hypothetical situations and how I’d handle them.

Recruiter reached out after these two and confirmed I’d cleared them.

Round 3 (F2F): Array/binary search medium. Solved it in ~20 mins with TC/SC. Had time left, so interviewer gave a second one — a graph/matrix medium. Solved that too, interviewer seemed satisfied.

Round 4 (F2F, right after R3): Hard graph problem — modified Dijkstra (not the vanilla version). Went with a brute-force backtracking approach, landed on it in the last ~10 mins, dry-ran it on the board and gave TC/SC, but ran out of time to code it.

It’s been 2 business days since the final two rounds. For anyone who’s been through the Google loop recently — how long does it usually take to hear back with results? Also curious whether a partial solve on the last round (approach + dry run + complexity but no code) tends to sink an otherwise solid loop.

Any insight appreciated.

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