What Really Happens in a Google Engineer Interview? A Step-by-Step Insider’s Guide

1. Personal Background

Brief intro: 985 undergraduate, top‑2 master’s, 4+ years experience, former backend TL at DJI.

2. Interview Process

Google interview flow:

Recruiter Prescreen

Phone Interview (1–2 sessions)

Onsite Interview (4–5 sessions, feedback within a week)

Hiring Committee Review

Offer Review

Offer Delivery

The author went through 1 phone round and 5 onsite rounds, total 7 rounds including HR prescreen.

3. Resume Submission

Discusses difficulty of campus recruitment, internal referrals, and reasons resumes may be rejected (mismatch, level, lack of highlights).

4. HR Interview

First round, basic CS fill‑in and multiple‑choice questions (e.g., quicksort complexity, stability of selection sort). Used to filter unsuitable candidates.

5. Phone Interview

Conducted via shared Google Doc, requires stable internet. Example question involved binary‑tree traversal within a business scenario; coding, edge cases, and optimization were discussed.

6. Onsite Interview

Four to five one‑hour coding sessions, plus system design and other topics. Topics included DP shortest‑path matrix, binary‑tree traversals, graph algorithms, and a knowledge‑graph design problem. Also featured a practical scenario‑based algorithm question.

Typical focus areas (from HR guide): coding, algorithms (sorting, searching, DP, greedy, recursion, Dijkstra, A*), data structures, mathematics, graphs, recursion, design, OS.

7. Lunch with Google Engineer

HR arranges a lunch with a Google engineer to answer questions and share work experience.

8. English Interview

Advice to prepare basic technical English vocabulary and practice speaking to avoid nervousness during the English‑only interview.

9. Outcome and Takeaways

Despite passing many stages, the author did not receive an offer. Feedback highlighted areas for improvement; continued practice and preparation are recommended for future attempts. The author offers to share interview materials and can provide internal referrals.