interviews

50 Most Common Tech Interview Questions USA 2026

By Joshua Giles16 January 202612 min read

What to Expect in US Tech Interviews

US tech interviews typically follow a structured process with multiple rounds. Here's what you'll face and how to prepare.

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The Typical Interview Process

  • Recruiter Screen (30 min phone call)
  • Technical Phone Screen (45-60 min coding)
  • Onsite/Virtual Onsite (4-6 hours):
  • - 2 coding rounds - 1 system design (senior+) - 1-2 behavioral rounds
  • Team Matching (at some companies)
  • Offer Discussion
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    Behavioral Questions

    Leadership & Impact

  • "Tell me about a time you led a project that had significant impact."
  • "Describe a situation where you had to influence without authority."
  • "Tell me about your biggest professional achievement."
  • "Describe a time you mentored someone."
  • "Tell me about a project you initiated on your own."
  • Problem Solving & Conflict

  • "Tell me about a time you disagreed with your manager."
  • "Describe a conflict with a teammate and how you resolved it."
  • "Tell me about a time you made a mistake. What did you learn?"
  • "Describe a situation where you had to make a decision with incomplete information."
  • "Tell me about a time you received critical feedback."
  • Amazon Leadership Principles Style

  • "Tell me about a time you simplified a complex process." (Bias for Action)
  • "Describe a time you dove deep into data to solve a problem." (Dive Deep)
  • "Tell me about your most innovative solution." (Invent and Simplify)
  • "Describe a time you raised the bar for your team." (Insist on Highest Standards)
  • "Tell me about a time you delivered results under pressure." (Deliver Results)
  • Meta/Facebook Style

  • "Why do you want to work at Meta?"
  • "How do you handle ambiguity?"
  • "Tell me about a product you built from scratch."
  • "How do you prioritize competing demands?"
  • "Describe your approach to building relationships with stakeholders."
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    Technical Questions: Coding

    Data Structures & Algorithms

  • "Implement a function to reverse a linked list."
  • "Find the longest palindromic substring."
  • "Implement a LRU cache."
  • "Find all anagrams in a string."
  • "Merge k sorted lists."
  • Array/String Problems

  • "Two Sum - find indices of two numbers that add to target."
  • "Maximum subarray sum (Kadane's algorithm)."
  • "Validate if a string has valid parentheses."
  • "Merge overlapping intervals."
  • "Product of array except self."
  • Tree/Graph Problems

  • "Validate a binary search tree."
  • "Level order traversal of binary tree."
  • "Find lowest common ancestor."
  • "Number of islands in a grid."
  • "Clone a graph."
  • Dynamic Programming

  • "Climb stairs - count ways to reach top."
  • "Coin change - minimum coins needed."
  • "Longest increasing subsequence."
  • "Edit distance between two strings."
  • "Word break problem."
  • ---

    System Design Questions (Senior+)

    Common Design Problems

  • "Design a URL shortener (like bit.ly)"
  • "Design Twitter's feed system"
  • "Design a distributed cache"
  • "Design a rate limiter"
  • "Design a notification system"
  • Tips for System Design

    • Always clarify requirements first
    • Start with high-level architecture
    • Discuss trade-offs (consistency vs availability)
    • Consider scale (millions of users)
    • Mention specific technologies you'd use
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    Questions to Ask Your Interviewer

  • "What does success look like in this role after one year?"
  • "What are the biggest challenges facing the team right now?"
  • "How do you approach technical debt vs new features?"
  • "What's the team's on-call rotation like?"
  • "What's something you wish you knew before joining?"
  • ---

    The STAR Method for Behavioral Questions

    Structure your answers:

    • Situation: Set the context
    • Task: Describe your responsibility
    • Action: Explain what YOU did
    • Result: Share the outcome (quantify if possible)
    Example:

    "Tell me about a time you improved a process."

    S: "At my previous company, deployments took 3 hours and required manual steps." T: "As the senior engineer, I was tasked with improving deployment reliability." A: "I implemented a CI/CD pipeline using GitHub Actions, added automated testing, and created rollback procedures." R: "Deployments went from 3 hours to 15 minutes, and we reduced production incidents by 60%."

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    Company-Specific Prep

    Google

    • Focus on scalability in system design
    • Expect very hard coding problems
    • "Googleyness" matters - be collaborative

    Amazon

    • Study Leadership Principles deeply
    • STAR method is essential
    • Expect multiple behavioral rounds

    Meta

    • Move fast culture - discuss shipping quickly
    • Product sense questions are common
    • Design for scale

    Microsoft

    • More traditional interview style
    • Expect whiteboard coding
    • Problem-solving approach matters more than perfect solution
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    Final Tips

  • Practice out loud - Talking while coding is a skill
  • Use LeetCode/HackerRank - At least 100 problems
  • Mock interviews - Pramp, interviewing.io, or friends
  • Research the company - Know their products and challenges
  • Prepare questions - Shows genuine interest
  • Good luck with your interviews!

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    Prepare for Salary Discussions

    After acing the interview, be ready to negotiate:

  • Take-Home Pay Calculator - Calculate your net pay
  • tech interviewinterview questionscoding interviewfaang interviewsystem design
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