Databricks Coding & Algorithms Interview Questions

Databricks Coding & Algorithms interview questions focus on clean, scalable problem solving under realistic constraints. Expect interviews that often resemble LeetCode-style algorithm problems but with an emphasis on optimizations that matter at scale: time and space complexity, edge cases, and clear, maintainable code. Interviews typically use an online IDE for live coding and are woven into a loop that also assesses system design and collaboration. For candidates targeting data, platform, or ML infrastructure teams, concurrency, streaming, and data-structure tradeoffs commonly surface alongside pure algorithmic challenges. For effective interview preparation, prioritize deliberate practice of medium-to-hard algorithm problems, timed mock interviews, and explaining complexity tradeoffs aloud. Solidify one primary programming language so you can write correct, testable code quickly, and revisit concurrency primitives and common distributed-systems patterns if your role touches platform work. Practice communicating assumptions, iterating from a brute-force approach to optimized solutions, and writing concise test cases. This combination of technical depth, clear communication, and systems awareness is what Databricks typically evaluates.

60 Questions 1 Company08.13.2026
Showing 20 results
Role
Databricks logo
Databricks
Medium
Software Engineer

Find the First Anagram Window in a String

Problem Given a lookup string and a nonempty query string, return the starting index of the first contiguous substring of the lookup string that is an...

Coding & Algorithms
2
0
37 people solved
Aug 13, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+

Detect a K-in-a-Row Win on a Rectangular Board

Detect a K-in-a-Row Win on a Rectangular Board Implement winning_move(board, row, col, k) after a valid move has placed a player's nonzero integer tok...

Coding & Algorithms
1
0
19 people solved
Jul 30, 2026
Databricks logo
Databricks
Hard
Software EngineerSenior+

Build a Constant-Time Snapshot Set Iterator

Build a Constant-Time Snapshot Set Iterator Design SnapshotSet, a set of integers whose iterators observe an immutable logical snapshot without copyin...

Coding & Algorithms
9
0
107 people solved
Jul 7, 2026
Databricks logo
Databricks
Hard
Software EngineerSenior+

Implement Generalized Tic-Tac-Toe

Implement Generalized Tic-Tac-Toe Implement a TicTacToe class for two players on an m by n board with a configurable winning length k. `text TicTacToe...

Coding & Algorithms
16
0
160 people solved
Jul 7, 2026
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Databricks
Hard
Software Engineer

Implement a Snapshot Set Iterator

Design and implement a set data structure that supports snapshot iteration. The set stores unique values. It must support the following operations: - ...

Coding & Algorithms
23
0
204 people solved
Apr 12, 2026
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Databricks
Medium
Software Engineer Locked

IPv4 CIDR Range Membership Queries

This question evaluates a candidate's ability to design an efficient longest-prefix-match lookup structure for IP address ranges, a core networking an...

Coding & Algorithms
2
0
20 people solved
Jun 23, 2026
Databricks logo
Databricks
Medium
Software Engineer

Find the Earliest Anagram Window

Find the Earliest Anagram Window Problem Implement firstAnagramStart(text, pattern) -> index. Return the zero-based start index of the earliest contig...

Coding & Algorithms
1
0
22 people solved
Jun 29, 2026
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Databricks
Hard
Software Engineer Locked

Find a Path Between Nodes in a Fibonacci Tree

Practice a Databricks coding interview problem focused on find a path between nodes in a fibonacci tree. The prompt emphasizes edge cases, clean imple...

Coding & Algorithms
2
0
21 people solved
May 30, 2026
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Databricks
Medium
Software Engineer Locked

Implement a Snapshot Set Iterator

This question evaluates data structure design, versioning, and iterator consistency concepts within the Coding & Algorithms domain, focusing on implem...

Coding & Algorithms
4
0
34 people solved
May 24, 2026
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Databricks
Medium
Software Engineer Locked

Design an n x n Tic-Tac-Toe Game

This question evaluates a candidate's ability to design a class-based data structure that tracks game state and efficiently detects a win condition af...

Coding & Algorithms
4
0
32 people solved
Jun 23, 2026
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Databricks
Hard
Software Engineer Locked

Determine allow/deny for an IP via CIDR rules

This question evaluates understanding of IPv4 addressing, CIDR range matching, rule ordering and precedence, and algorithmic correctness in determinin...

Coding & Algorithms
21
0
192 people solved
Feb 12, 2026
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Databricks
Medium
Software EngineerSenior+ Locked

Optimal Commute: Nearest Transit Distance in a City Grid

This question evaluates a candidate's ability to apply multi-source breadth-first search to a grid-based shortest-path problem. It tests graph travers...

Coding & Algorithms
1
1
24 people solved
Jun 9, 2026
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Databricks
Hard
Software EngineerNew Grad

Find path in implicit Fibonacci tree

You are given a special family of binary trees called Fibonacci trees. The k‑th order Fibonacci tree T(k) is defined recursively: - T(1) is a single n...

Coding & Algorithms
138
1
1041 people solved
Dec 10, 2025
Databricks logo
Databricks
Hard
Software EngineerNew Grad

Implement streaming RLE and bit-packed codec

You are implementing a simple compression scheme for sequences of 32‑bit signed integers. The codec should support two encoding strategies: 1. Run‑Len...

Coding & Algorithms
51
0
688 people solved
Dec 10, 2025
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Databricks
Medium
Software Engineer Locked

Choose the Best Travel Mode

Solve a grid-based pathfinding problem where a traveler must choose the transportation mode with the lowest travel time and cost tie-breakers. The que...

Coding & Algorithms
2
0
6 people solved
Jun 4, 2026
Databricks logo
Databricks
Medium
Software Engineer

Design IP/CIDR rule matcher

Design and implement a rule matcher that returns 'accept' or 'deny' for a given IPv4 address based on a set of rules. Each rule can be either an inclu...

Coding & Algorithms
28
0
267 people solved
Sep 6, 2025
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Databricks
Medium
Software Engineer

Implement run-length encoding and decoding

You are given a string consisting of lowercase English letters. You need to implement run-length encoding (RLE) and its corresponding decoding. 1. Enc...

Coding & Algorithms
44
0
378 people solved
Dec 8, 2025
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Databricks
Medium
Software Engineer

Implement a snapshotable set with iterators

Implement a SnapshotSet data structure with the following API: add(x), remove(x), contains(x), snapshot() -> sid, and iterate(sid) -> iterator over th...

Coding & Algorithms
34
0
504 people solved
Aug 11, 2025
Databricks logo
Databricks
Medium
Software EngineerIntern

Design Tic-Tac-Toe and QPS data structures

You are given two independent coding problems that focus on data structure and API design. --- Problem 1: Generalized Tic-Tac-Toe Game with Simple AI ...

Coding & Algorithms
52
0
377 people solved
Nov 13, 2025
Databricks logo
Databricks
Medium
Software Engineer Locked

Solve Grid Path and Graph Sampling

This question evaluates graph algorithms and probabilistic/combinatorial reasoning, covering multi-criteria shortest-path optimization (minimizing tra...

Coding & Algorithms
4
0
44 people solved
Apr 3, 2026

Frequently Asked Questions

How difficult are Databricks Coding & Algorithms interviews compared to other tech companies?
Databricks coding and algorithms interviews are typically challenging and often skew toward medium-to-hard LeetCode problems. Interviewers expect correct, efficient solutions and clear complexity analysis; a brute-force approach can show progress but interviewers commonly expect subsequent optimizations. Many problems emphasize algorithmic thinking—graphs, dynamic programming, intervals, and tricky edge cases—while some rounds focus on concurrency, synchronization, and memory behavior. You’ll be evaluated on producing clean, runnable code, reasoning through trade-offs, and explaining how your solution scales. Practicing under timed conditions helps simulate the pressure and pacing of actual rounds.
Where in the Databricks interview process does Coding & Algorithms appear, and what formats should I expect?
Coding & Algorithms typically appears across multiple stages: a proctored online assessment for many candidates, a technical phone screen conducted in a shared editor like CoderPad, and two to three onsite coding rounds during the virtual onsite loop. Those sessions can be pure algorithmic problems or implementation-heavy tasks; some interviews concentrate on concurrency or large-input performance. Data-focused roles may combine algorithm questions with SQL or data-processing tasks. Interviews emphasize writing runnable code, walking through test cases, and discussing time/space trade-offs while communicating your thought process clearly throughout each format.
How should I structure my interview preparation timeline for Databricks' coding rounds?
If time allows, plan a structured 6–8 week schedule: begin with fundamentals and complexity analysis, spend weeks practicing arrays, strings, trees, and graph problems, then focus a week on dynamic programming, intervals, and greedy approaches. Reserve time for concurrency and performance-minded problems, and finish with mixed timed mocks and reviewing mistakes. For a condensed timeline, prioritize high-frequency problem patterns and daily timed practice over three to four weeks, adding focused concurrency and optimization sessions. In all cases include regular mock interviews, writing tests, and reviewing optimized solutions to build speed and robustness.
What key subtopics and problem types should I focus on for Databricks Coding & Algorithms interviews?
Focus on core algorithmic areas: arrays and strings, linked lists, trees, graphs and traversals, BFS/DFS, dynamic programming and memoization, intervals and sorting, sliding-window, hashing, greedy strategies, and bit manipulation. For Databricks roles also emphasize handling large inputs, streaming-style constraints, efficient I/O, and performance-minded optimizations for memory and runtime. Advanced items often include concurrency and multithreading, union-find, priority queues, and careful complexity trade-offs. Equally important is pattern recognition and habitually writing test cases that cover edge cases and performance boundaries during practice.
What standout tips should I follow, and what common pitfalls should I avoid in these interviews?
Speak your thought process clearly, ask clarifying questions about constraints, and start with a correct brute-force solution if needed, then iterate toward optimization. Write clean, well-structured code you can run through simple tests and explain complexity. Avoid common pitfalls: premature optimization before correctness, ignoring edge cases and input constraints, failing to test with representative cases, and not handling concurrency pitfalls like race conditions or deadlocks when relevant. Also don’t stop at a solution—discuss trade-offs, alternative approaches, and how your code would behave on large-scale inputs or in a distributed setting.

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