The Google interview process is structured and multi-stage, focusing on technical proficiency, problem-solving ability, and cultural fit.

Recruiter Screening The process begins with a short phone call with a recruiter. They review background, relevant technical experience, job fit, and logistics such as role preferences and timeline.

Technical Phone/Virtual Interviews (1–2 rounds) Candidates participate in 45–60 minute coding interviews using an online collaborative editor. These rounds assess:

• Data structures and algorithms
• Problem-solving and analytical thinking
• Code quality and test case coverage
• Communication and clarity of thought

On-Site / Virtual On-Site Interviews (4–5 rounds) The on-site stage typically includes:

• 2 Coding Rounds: Algorithms, complexity optimization, correctness
• 1–2 System Design Rounds (for mid-level and above) or role-related knowledge for entry-level roles
• Behavioral Interview: Focused on teamwork, ownership, leadership, and “Googleyness”

Hiring Committee Review Feedback from all interviewers is submitted to a committee that independently evaluates overall performance to ensure fairness and consistency.

Team Matching Successful candidates are matched with hiring managers and teams based on mutual interests and hiring needs.

Offer & Onboarding Once a match is finalized, the offer is extended and the standard background check is completed.

They asked me to design a data structure that supports insert, delete, and getRandom in average O(1) time.