Interview questions

Collection of interview questions for software developer role. It can be useful for candidates searching for a job and recruiters looking for new developers. These lists contain questions I've got during my interviews and questions, which I gathered from the web and other people. I've also added a list of questions for the pontential employer here, which can be useful during verification if the quality of the company is high or low.

Please note: every company has different hiring politics and knowing answers for these questions may be not enough.

Available lists

• General interview questions (non-technical)
• Java Developer interview questions
• Android Developer interview questions
• JavaScript Developer interview questions
• Google/FANG Developer interview questions

Questions for the employer

• Questions for the employer
• Interview This!

Other lists on GitHub

• https://github.com/MaximAbramchuck/awesome-interviews
• https://github.com/JackyAndroid/AndroidInterview-Q-A
• https://github.com/MindorksOpenSource/android-interview-questions
• https://github.com/kdn251/interviews - algorithmic interview questions at Google, Facebook, Uber, Airbnb, etc.
• https://github.com/SuyashLakhotia/TechInterview
• https://github.com/sherxon/AlgoDS
• https://github.com/karan/Projects - programming problems to solve in different languages
• https://github.com/coells/100days
• https://github.com/ryanbas21/interview_questions
• https://github.com/arialdomartini/Back-End-Developer-Interview-Questions
• https://github.com/anitaa1990/Android-Cheat-sheet - java, android & general
• https://github.com/mission-peace/interview - mostly algorithic questions
• https://github.com/bregman-arie/devops-interview-questions
• https://github.com/rishabh115/Interview-Questions - categorized by company

Questions on-line (Java)

• https://howtodoinjava.com/java-interview-questions/
• https://www.edureka.co/blog/interview-questions/java-interview-questions/
• https://www.journaldev.com/2366/core-java-interview-questions-and-answers
• https://intellipaat.com/interview-question/java-interview-questions/
• https://www.guru99.com/java-interview-questions-answers.html
• https://www.javatpoint.com/corejava-interview-questions
• https://www.tutorialspoint.com/java/java_interview_questions.htm
• https://javarevisited.blogspot.com/2011/04/top-20-core-java-interview-questions.html
• https://www.interviewbit.com/java-interview-questions/

Recruitment Coding Tasks

A few of my own coding tasks:

• Koyo Loans, fin-tech startup, Kotlin Backend Developer (London/Remote): https://github.com/pwittchen/koyo-task-chess (passed)
• Revolut, fin-tech startup, Java Backend Developer (Kraków): https://github.com/pwittchen/money-transfer-api (not passed)
• Contentful, headless cms startup, Android Developer (Berlin): https://github.com/pwittchen/SearchTwitter (passed coding task)

Mind maps

• Interview Map

Books and guides about interviews

• Cracking Coding Interview
  • PL translation
• Tech Interview HandBook

Books about coding

• Clean Code
• Test Driven Development
• Effective Java
• Java Concurrency In Practice
• Algorytmy, struktury danych i techniki programowania [PL] or any good book about algorithms

System design

• System Design Primer
• Grokking System Design

Resources about Java

• Effective Java Summary
• Jenkov Tutorials
• Java Concurrency in Practice

Others

• Hiring without whiteboards
• Coding Interview University
• Tech interview handbook

Remote jobs

• Awesome Remote Job
• We Work Remotely
• Remotive
• StackOverflow - Remote
• No Fluff Jobs - Remote
• JustJoin.it - Remote
• A list of established remote companies

Job Boards

• Poland
  • No Fluff Jobs
  • Just Join IT
  • Pracuj.pl
  • Praca.pl
• World
  • StackOverflow
  • HackerNews
  • Ask HN: Who is hiring? (past month)

Website where you can practice questions for interviews

• HackerRank
• HackerEarth
• GreeksForGreek
• Interview bit
• Leet Code
• CodeForce
• Codechef

Contributing

If you want to improve existing lists or add another list, feel free to create a Pull Request!