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GoogleApplication Engineer

Google Application Engineer Interview Questions

Prepare for this exact position with 4 real candidate reports. Review the levels, locations, interview formats, and questions that appeared most often for Google Application Engineer candidates.

4

role-specific reports

20

questions found

2

levels represented

2

locations represented

Updated 2026-07-30

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Google Application Engineer candidate reports

Search within this position by level, location, interview type, outcome, or a specific question.

4 matching interviews

Application Engineer · Intern

Oct 2024MixedRejected
3 questions
  1. 01

    Flatten an n-ary tree into a linear structure

    Coding & Algorithms · Medium

  2. 02

    Perform preorder traversal on a tree with parent, left child, and right sibling pointers

    Coding & Algorithms · Medium

  3. 03

    Design the architecture of an e-commerce website

    System Design · Hard

Application Engineer · L4

IndiaSep 2024MixedPending
3 questions
  1. 01

    Solve a medium-difficulty dynamic programming problem

    Coding & Algorithms · Medium

  2. 02

    Design a ticket workflow system

    System Design · Medium

  3. 03

    Design integration of two systems with different performance speeds, including data flow, API design, authentication, and encryption

    System Design · Hard

Application Engineer · L4

HyderabadMay 2024MixedRejected
11 questions
  1. 01

    Find managers who work in a different location than their employees using self join.

    SQL & Databases · Medium

  2. 02

    Find the longest consecutive elements sequence in an unsorted array.

    Coding & Algorithms · Medium

  3. 03

    Find the longest substring containing at most two distinct characters.

    Coding & Algorithms · Medium

Application Engineer · Intern

Mar 2024MixedRejected
4 questions
  1. 01

    Describe your resume, projects, and competitive programming experience.

    Behavioral & Leadership · Easy

  2. 02

    Solve a breadth-first search algorithm problem.

    Coding & Algorithms · Medium

  3. 03

    Solve a dynamic programming follow-up problem.

    Coding & Algorithms · Medium

Most-asked Google Application Engineer questions

Ranked by how often each question appeared in reports for this exact position. Answers are written by our team.

Solve a BFS related problem.

asked in 1 reportsmediumO(V + E) time, O(V) space

BFS explores graphs level-by-level to find shortest paths in unweighted graphs. Initialize a queue with the source node (mark visited), then repeatedly dequeue and enqueue all unvisited neighbors. The first path reaching your target is guaranteed shortest—this is BFS's defining advantage. Key insight: level-by-level exploration ensures no shorter path exists. Implement careful visited tracking to avoid cycles. Google values clean queue-based implementations, proper edge handling, and demonstrating why BFS guarantees optimality over other traversal approaches.

Solve a one-dimensional dynamic programming problem

asked in 1 reportshardO(n) time, O(n) space

Define your state clearly—typically dp[i] representing the optimal solution for the first i elements. Derive the recurrence relation by analyzing valid transitions from prior states, then compute forward iteratively. The key insight: identify minimal state dependencies. Most 1D DP problems need only the previous value(s), enabling space reduction from O(n) to O(1). Correctly handle base cases—they anchor your computation and must match your recurrence definition.

More reported questions

  1. 01

    Answer behavioral and cultural fit questions.

    asked in 1 reports
  2. 02

    Design a car warehouse system with database schema, table design, and SQL query optimization.

    asked in 1 reports
  3. 03

    Design a data pipeline integrating distributed warehouse inventory into a central ERP system.

    asked in 1 reports
  4. 04

    Design a multi-tenant car rental reservation system supporting tiered vehicles, time-based booking, and discount management.

    asked in 1 reports
  5. 05

    Design a ticket workflow system

    asked in 1 reports
  6. 06

    Design integration of two systems with different performance speeds, including data flow, API design, authentication, and encryption

    asked in 1 reports
  7. 07

    Design the architecture of an e-commerce website

    asked in 1 reports
  8. 08

    Find managers who work in a different location than their employees using self join.

    asked in 1 reports
  9. 09

    Find the complete management hierarchy chain from an employee up to the top level.

    asked in 1 reports
  10. 10

    Find the longest sequence of consecutive integers in an unsorted array.

    asked in 1 reports
  11. 11

    Find the longest substring containing at most two distinct characters.

    asked in 1 reports
  12. 12

    Find the maximum profit from buying and selling a stock once.

    asked in 1 reports
  13. 13

    Find the maximum profit from multiple buy-sell transactions of a stock.

    asked in 1 reports
  14. 14

    Find two numbers in an array that add up to a target value.

    asked in 1 reports
  15. 15

    Flatten an n-ary tree into a linear structure

    asked in 1 reports
  16. 16

    Implement a recursive CTE solution in both SQL and Python.

    asked in 1 reports
  17. 17

    Perform preorder traversal on a tree with parent, left child, and right sibling pointers

    asked in 1 reports
  18. 18

    Solve a medium-difficulty dynamic programming problem

    asked in 1 reports