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Google's Interview Process (2026)

Blog / Google's Interview Process (2026)

Google's software engineer interview process is one of the most well-known in tech, and it typically follows a structured multi-stage pipeline. The specifics can vary based on your level and team, but most candidates go through something like the following:

Recruiter Screen: A phone call covering your background, logistics like location and visa status, and general interest in the role. Recruiters in 2025 are often asking about specific areas like Google Cloud or AI-integrated products.
Online Assessment (OA): Primarily for new grad and L3 candidates, this is usually a timed coding challenge with around two algorithmic problems. Experienced L4+ candidates often skip this stage entirely.
Technical Phone Screen: One or two video rounds where you solve a medium-to-hard coding problem in a shared Google Doc. Expect to explain your thinking out loud and walk through time and space complexity.
Onsite / Virtual Loop: The core of the process, typically four to five back-to-back interviews covering coding, system design (usually required for L4 and above), and a behavioral round focused on Googliness and teamwork.
Hiring Committee (HC) Review: Your interview feedback is reviewed by a committee rather than a single hiring manager. This adds time but helps reduce individual bias in the decision.
Team Matching and Offer: After HC approval, you typically interview with specific engineering managers to find a team that fits. This stage is the most variable and can take anywhere from a week to a couple of months.

Once you understand the stages, the next step is building a focused study plan. Google's SWE interviews generally test across these core areas:

Data Structures & Algorithms (DSA): The backbone of every Google coding round, from phone screens to the full onsite loop.
System Design (High-Level Design): Required for L4 and above, focused on designing systems at Google scale.
Low-Level Design: Object-oriented and class-level design problems that test how you structure code and systems.
Behavioral (Googliness): Google's behavioral round evaluates culture fit, teamwork, and how you handle ambiguity.

1. Data Structures & Algorithms (DSA)DSA is the heart of Google's technical interviews, appearing in the phone screen and in two to three rounds of the onsite loop. Google has largely moved away from brain teasers and now favors complex, multi-part problems that test your ability to optimize a working solution.Graphs and trees are among the most frequently reported topics. Expect BFS and DFS in various forms, Dijkstra's algorithm, and classic tree problems like Serialize and Deserialize Binary Tree or Lowest Common Ancestor. Our graphs and trees topic pages are a good place to start.Dynamic programming tends to show up as a follow-up optimization after you've written a recursive solution. A reported 2025 example: "Find the longest increasing subarray. Follow-up: if you can replace exactly one element to make the subarray longer, how does your solution change?" You can try this exact problem as Longest Increasing Subarray with One Modification.Arrays and strings often appear as warm-up problems within the 45-minute block. Sliding window and two-pointer patterns are common, so make sure you're comfortable with problems like Minimum Window Substring and Fruit Into Baskets. For a curated starting point, work through our 100 most commonly asked DSA questions to cover the patterns that show up most often at Google.One thing to practice that catches many candidates off guard: Google is reported to sometimes still use a plain Google Doc for coding, with no syntax highlighting or auto-complete, and other times just use a basic text editor.Practice writing code in a similar environment regularly so you're not thrown off during the real interview.

2. System Design (High-Level Design)System design is typically required for L4 (mid-level) candidates and above, and Google frames these problems at massive scale, think billions of users and global infrastructure. L3 candidates may get a lighter version of this round or an additional coding round instead.Common 2025 prompts include designing a global file storage system like Cloud File Sharing Service (Dropbox, Google Drive), a Web Crawler for indexing, or a real-time Notification System. Interviewers want to hear you reason about load balancing, sharding, caching, and API design, not just arrive at an answer.The key to doing well is showing your trade-off thinking. Saying "I chose NoSQL here because of write throughput, but the trade-off is weaker consistency guarantees" is far more valuable than a technically correct answer with no reasoning. Brush up on system design core concepts and caching fundamentals to build that vocabulary.For hands-on practice, use our System Design Whiteboard to sketch out architectures interactively. Combining that with our High-Level Design question library will give you solid coverage of the scenarios Google is known to ask.

3. Low-Level DesignLow-level design questions at Google tend to focus on class structure, object-oriented principles, and building small but well-thought-out systems. These are more common in specialized infrastructure or platform roles, but any candidate may encounter one.Typical prompts involve designing things like a Parking Lot System, a Logger Rate Limiter, or an in-memory file system like Design In-Memory File System. The emphasis is on clean abstractions, sensible interfaces, and code that could realistically be extended.For structured practice across this category, visit our Low-Level Design practice library, which covers the patterns and problem types most commonly seen in Google-style LLD rounds.

4. Behavioral (Googliness)Google's behavioral round is officially about "Googliness," which in practice means how you handle ambiguity, how you give and receive feedback, and whether you thrive on challenges that don't have obvious answers. It's one dedicated round in the onsite loop.Structure your answers using the STAR format. Google interviewers are specifically listening for a clear situation, a defined action you personally took, and a concrete result. Read through the STAR principle before your interview to make sure your stories land clearly.Common themes include navigating disagreements with teammates, handling a project that went sideways, and describing a time you tackled something you'd never done before. Prepare four to six strong stories from your experience that can flex across different question types. Our Behavioral Playbook can help you build and refine those stories.

ConclusionGoogle's interview process rewards candidates who are technically sharp, think out loud, and can clearly reason about trade-offs at every level. Start by locking in your DSA fundamentals, then layer in system design and behavioral prep as you get closer to your interviews. Follow the Google Interview Roadmap for a structured, stage-by-stage plan to get you from first principles to offer-ready.