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Interview questions from top companies, mapped to the exact round they show up in. Prep for what you will actually face.

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Online AssessmentDSA / CodingMachine CodingLow-Level Design

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The Loop aggregates publicly shared interview experiences and curated commonly-asked questions, each labeled with its source. Not affiliated with any company listed.

CC BY-NC 4.0 · © 2026

← Neo4j

Senior Full-stack at Neo4j

Full-stackSeniorNo offer◆ Commonly asked· 2023

6-round senior fullstack process. Fast-paced; expect follow-ups that push on depth.

The loop · 6 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Implement a trie (prefix tree).
    SeniorMedium◆ Commonly asked
    #trie
    PracticeLeetCode↗GeeksforGeeks↗
  • Set matrix zeroes.
    SeniorMedium◆ Commonly asked
    #matrix
    PracticeLeetCode↗GeeksforGeeks↗
  • Contains duplicate.
    SeniorEasy◆ Commonly asked
    #array#hashmap
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a countdown timer with pause and resume.
    SeniorEasy◆ Commonly asked
    #react#state
    PracticeGeeksforGeeks↗Search↗
  • Build a background job runner with priorities.
    SeniorMedium◆ Commonly asked
    #queue#workers
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

System Design

High-level architecture of a large-scale system.

  • Design a feature-flag service.
    SeniorMedium◆ Commonly asked
    #config#rollout
    PracticeGeeksforGeeks↗Search↗
  • Design a pastebin with expiring links.
    SeniorMedium◆ Commonly asked
    #storage#ttl
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • What is a deadlock and how do you avoid one?
    SeniorHard◆ Commonly asked
    #concurrency
    PracticeGeeksforGeeks↗Search↗
  • How do you implement dark mode without a flash?
    SeniorMedium◆ Commonly asked
    #css#ssr
    PracticeGeeksforGeeks↗Search↗
  • How do you prevent and detect N+1 queries?
    SeniorMedium◆ Commonly asked
    #databases#orm
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 1 question

Hiring Manager

Scope, ownership, and role-fit discussion with the manager.

  • How do you decide what to build vs. buy vs. defer?
    Senior◆ Commonly asked
    #judgment
06

Round 06 · 2 questions

Behavioral / HR

Values, collaboration, and past-experience (STAR) questions.

  • How do you get up to speed on an unfamiliar codebase?
    Senior◆ Commonly asked
    #learning
  • Describe a time you disagreed with a teammate. How did it resolve?
    Senior◆ Commonly asked
    #conflict#star

Practice each round across every company

  • DSA / Coding
  • Machine Coding
  • System Design
  • Tech Deep-Dive
  • Hiring Manager
  • Behavioral / HR

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.