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Entry-Level Software Engineer Interview Questions

These questions are tailored for aspiring software engineers, offering essential interview prep and guided practice to help you build confidence and showcase your foundational skills effectively.

Overview

Content

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Entry-level software engineer interviews focus on your grasp of programming fundamentals, problem-solving ability, and understanding of how software systems work. In this set of interview questions, you’ll tackle problems and scenarios that reflect the types of challenges commonly faced by new software engineers. You’ll practice writing and debugging functions in your preferred programming language, solving algorithmic problems involving arrays, strings, hash maps, and recursion, and analyzing time and space complexity. The questions also cover foundational technical knowledge, such as explaining core concepts like HTTP, databases, and APIs. Additionally, you’ll be asked to reason through simple system design tasks, like structuring a basic to-do app or implementing a queue—helping you develop both technical clarity and practical design thinking. Each question is designed to reinforce your understanding of computer science fundamentals and help you build fluency in solving problems under time constraints.

Entry-level software engineer interviews focus on your grasp of programming fundamentals, problem-solving ability, and understan...Show More

WHAT YOU'LL LEARN

Strategies to approach entry-level software engineer interview questions with clarity and a solid understanding of the basics.

Pattern-based problem solving using techniques like two pointers, sliding windows, and hash maps.

Methods to clearly communicate your thinking, improve your code, and reflect on time-space trade-offs.

Key programming principles include object-oriented design, databases, APIs, and version control.

Guidance for succeeding in behavioral interviews and communicating technical decisions.

Ways to practice effectively and grow your confidence through consistent, focused preparation.

Strategies to approach entry-level software engineer interview questions with clarity and a solid understanding of the basics.

Learning Roadmap

1057 Lessons545 Quizzes544 Challenges

Getting Started

Course Overview

Who Should Take This Course

Two Pointers

Introduction to Two Pointers

Valid Palindrome

Solution: Valid Palindrome

3Sum

Solution: 3Sum

Remove Nth Node from End of List

Solution: Remove Nth Node from End of List

Sort Colors

Solution: Sort Colors

Reverse Words in a String

Solution: Reverse Words in a String

Valid Word Abbreviation

Solution: Valid Word Abbreviation

Strobogrammatic Number

Solution: Strobogrammatic Number

Minimum Number of Moves to Make Palindrome

Solution: Minimum Number of Moves to Make Palindrome

Next Palindrome Using Same Digits

Solution: Next Palindrome Using Same Digits

Lowest Common Ancestor of a Binary Tree III

Solution: Lowest Common Ancestor of a Binary Tree III

Count Pairs Whose Sum is Less than Target

Solution: Count Pairs Whose Sum is Less than Target

Count Subarrays With Fixed Bounds

Solution: Count Subarrays With Fixed Bounds

Get the Maximum Score

Solution: Get the Maximum Score

Find the Lexicographically Largest String From Box II

Solution: Find the Lexicographically Largest String From Box II

Create Maximum Number

Solution: Create Maximum Number

Append Characters to String to Make Subsequence

Solution: Append Characters to String to Make Subsequence

Squares of a Sorted Array

Solution: Squares of a Sorted Array

Reverse String

Solution: Reverse String

Intersection of Two Linked Lists

Solution: Intersection of Two Linked Lists

Remove Element

Solution: Remove Element

String Compression

Solution: String Compression

Partition Labels

Solution: Partition Labels

Next Permutation

Solution: Next Permutation

Rotate Array

Solution: Rotate Array

Remove Duplicates from Sorted Array

Solution: Remove Duplicates from Sorted Array

Is Subsequence

Solution: Is Subsequence

Reverse Vowels of a String

Solution: Reverse Vowels of a String

Merge Strings Alternately

Solution: Merge Strings Alternately

Compare Version Numbers

Solution: Compare Version Numbers

Valid Palindrome II

Two Pointers

Mock Interview

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Fast and Slow Pointers

21 Lessons

Fast and Slow Pointers

Mock Interview

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Sliding Window

39 Lessons

Sliding Window

Mock Interview

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Intervals

20 Lessons

Merge Intervals

Mock Interview

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In-Place Manipulation of a Linked List

28 Lessons

In-place manipulation of a linked list

Mock Interview

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Heaps

25 Lessons

Heaps

Mock Interview

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K-way merge

15 Lessons

K-way merge

Mock Interview

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Top K Elements

37 Lessons

10.

Modified Binary Search

42 Lessons

Modified Binary Search

Mock Interview

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11.

Subsets

16 Lessons

12.

Greedy Techniques

45 Lessons

13.

Backtracking

39 Lessons

14.

Dynamic Programming

80 Lessons

Dynamic Programming

Mock Interview

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15.

Cyclic Sort

12 Lessons

16.

Topological Sort

22 Lessons

Topological Sort

Mock Interview

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17.

Sort and Search

33 Lessons

18.

Matrices

39 Lessons

19.

Stacks

34 Lessons

20.

Graphs

35 Lessons

Graphs

Mock Interview

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21.

Tree Depth-First Search

43 Lessons

22.

Tree Breadth-First Search

26 Lessons

Tree Breadth First Search

Mock Interview

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23.

Trie

30 Lessons

24.

Hash Maps

60 Lessons

25.

Knowing What to Track

38 Lessons

Knowing what to track

Mock Interview

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26.

Union Find

28 Lessons

Union Find

Mock Interview

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27.

Custom Data Structures

32 Lessons

28.

Bitwise Manipulation

36 Lessons

Bitwise Manipulation

Mock Interview

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29.

Math and Geometry

79 Lessons

Math and Geometry

Mock Interview

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30.

Challenge Yourself

40 Lessons

31.

Conclusion

Where to Go from Here?

Coding Patterns

Mock Interview

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Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Course Author:

Fahim ul Haq

Developed by MAANG Engineers

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Personalized Interview Prep

Skip the LeetCode grind with a custom roadmap that adapts to your goals. Hands-on practice for Coding Interviews, System Design, and more.

Mock Interviews

Test your skills in a simulated interview setting. Receive personalized feedback based on your performance. Available for Coding Interviews, System Design, and more.

AI Prompt

Build prompt engineering skills. Practice implementing AI-informed solutions.

Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

Explain

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!

Free Resources

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Frequently Asked Questions

What do entry-level software engineer interviews actually test?

Core problem-solving with data structures and algorithms, code correctness, time/space complexity, and your ability to communicate clearly while iterating.

Will I face hands-on tests or whiteboard exercises at entry-level SE interviews?

Yes. Many interviews include a live coding segment—either writing code on a whiteboard or in a shared online editor. The focus is on clear thinking, effective approach, and correctness rather than perfect syntax.

Are behavioral questions included for entry-level software engineer roles?

Absolutely. Interviewers want to know about your education, projects, teamwork, leadership, adaptability, and why you’re passionate about software engineering.

What soft skills matter for an entry-level software engineer interview?

Communication, collaboration, and openness to mentorship are key. Interviewers test whether you can learn quickly, clarify requirements, and contribute positively in a team.

How much System Design is expected for an entry-level software engineer interview?

Usually fundamentals only: simple API boundaries, pagination, caching basics, or how you’d structure a small feature. Depth is limited; clarity and trade-offs matter more than scale diagrams.

Will I face debugging or refactoring tasks during an entry-level SE interview?

Commonly. You might fix an off-by-one bug, remove quadratic hotspots, or refactor into cleaner helpers without changing behavior.

What are common pitfalls to avoid during an entry-level software engineer interview?

Skipping edge cases, not reading constraints, premature optimization, unclear variable names, no tests, and hand-waving complexity.

How should I structure my on-the-spot approach during an entry-level SE interview?

Restate the problem → clarify constraints → propose a baseline → analyze complexity → implement cleanly → test with cases → discuss improvements.

What does an “excellent” entry-level answer sound like for a software engineer interview?

It’s precise (inputs/outputs defined), justifies a data structure choice, states complexity, handles edges, includes quick tests, and explains trade-offs plainly.

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