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Software Engineer Interview Questions
Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.
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Showing 5551–5580 of 5874 results
- UberMediumSoftware EngineerSimulate robot on grid with obstacles
Simulate robot on grid with obstacles evaluates algorithm design, data structures, correctness, complexity, edge cases, and implementation details in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Coding & AlgorithmsOnsite - UberHardSoftware EngineerSmallest Palindromic Number Strictly Greater Than n, Up to 18 Digits
Given a positive integer of up to 18 digits as a string, return the smallest palindromic number strictly greater than it, or the input itself when no such palindrome stays within 18 digits. Tests digit-level reasoning and edge cases such as palindromic inputs, carries and changes in digit count.
Coding & AlgorithmsTechnical Screen - UberMediumSoftware EngineerSolve 12 coding interview problems
This multi-problem set evaluates broad algorithmic problem-solving skills, including bitwise reasoning, sliding-window and frequency analysis, stack/monotonic patterns, graph/DP reasoning with constrained jumps, and tree-path parity techniques.
Coding & AlgorithmsOnline Assessment - UberMediumSoftware EngineerSolve BFS and grid tasks
This collection evaluates understanding of search techniques (binary search and BFS), graph and grid traversal, state-space shortest-path reasoning, randomized placement with adjacency counting, and attention to implementation quality and complexity trade-offs.
Coding & AlgorithmsOnsite - UberMediumSoftware EngineerSolve Balanced Permutations and Tree Reversals
This two-part prompt evaluates array and permutation reasoning for detecting contiguous value ranges and directed graph/tree reasoning for minimizing edge reversals when choosing a root, testing competencies in index and interval management, graph traversal and orientation, and algorithmic counting.
Coding & AlgorithmsOnline Assessment - UberHardSoftware EngineerSolve Knight and Reversal Problems
This question evaluates graph modeling, state-space exploration, and shortest-path/reachability reasoning for nonstandard movement rules and constrained state transformations.
Coding & AlgorithmsOnline Assessment - UberMediumSoftware EngineerSolve Prime Jumps and Pipeline Scaling
This question evaluates algorithmic problem-solving skills in constrained path optimization and resource-allocation throughput maximization, including concepts such as graph modelling with prime-step constraints, dynamic programming, number-theoretic reasoning, and combinatorial optimization.
Coding & AlgorithmsTechnical Screen - UberHardSoftware EngineerSolve Two OA Algorithm Problems
This problem tests your ability to optimize resource allocation using a greedy approach with a priority queue and to determine graph reachability within a constrained network.
Coding & AlgorithmsOnline AssessmentGreedyGraphsBFS - UberHardSoftware EngineerSolve Wonderful Strings and Grid Queries
This problem tests your ability to optimize string transformations using bitmask dynamic programming and to perform efficient range-based queries on a grid using a 2D data structure or sweep-line approach.
Coding & AlgorithmsTechnical ScreenBitmaskDynamic ProgrammingOffline Queries - UberHardSoftware EngineerSolve jump maximization and palindromic path queries
This problem tests dynamic programming with array constraints and tree-based traversal combined with bitwise parity checks for palindromic properties.
Coding & AlgorithmsOnline AssessmentDynamic ProgrammingSliding WindowTrees - UberMediumSoftware EngineerSolve stock profit and vertical tree traversal
Assesses proficiency in array processing and binary tree traversal algorithms—specifically single-pass analysis of time-series data and coordinate-based vertical ordering of tree nodes; Category: Coding & Algorithms; Level of abstraction: implementation-level algorithmic coding.
Coding & AlgorithmsOnsite - UberMediumSoftware EngineerSolve two interview coding problems
These two problems evaluate algorithmic problem-solving skills: the first focuses on spatial reasoning and grid-based distance computation relative to obstacles, while the second targets tree traversal and character-frequency reasoning for ancestor-path palindrome checks.
Coding & AlgorithmsTechnical Screen - UberHardSoftware EngineerSort a Matrix into Snake Order Using Adjacent Swaps
Construct any legal adjacent-swap sequence that sorts a numbered matrix into snake order, prove correctness, validate the output, and discuss reducing swap counts.
Coding & AlgorithmsTechnical Screen - UberEasySoftware EngineerSort a String of Clothing Sizes
This problem tests the ability to perform a custom sort on a constrained set of characters using an O(n) counting approach rather than a standard comparison-based O(n log n) sort.
Coding & AlgorithmsTechnical ScreenSortingCounting SortString Manipulation - UberMediumSoftware EngineerSort by squares and find k-th smallest
This question evaluates array manipulation, ordering by derived keys (squares/absolute values), order-statistics reasoning, and algorithmic complexity analysis within the Coding & Algorithms domain.
Coding & AlgorithmsTechnical Screen - UberMediumSoftware EngineerTrack Customer Referral Revenue
This problem tests your ability to model a tree structure and maintain aggregated values across subtrees using recursion or iterative tree traversal.
Coding & AlgorithmsTechnical ScreenTreesRecursionDFS - Uber FreightMediumSoftware EngineerDesign a Distributed URL Shortener for Very High Redirect Traffic
A system design interview question asking you to design a distributed URL shortener. It tests API design, unique short-code and distributed ID generation, collision handling, storage and sharding, caching for very high redirect traffic, availability, fault tolerance, and link expiration.
System DesignOnsite - Uber FreightMediumSoftware EngineerDesign a Real-Time Restaurant Analytics Dashboard
This problem tests the ability to design a distributed, low-latency analytics pipeline capable of handling high-throughput event ingestion, time-windowed aggregations, and efficient cache retrieval.
System DesignOnsiteDistributed SystemsStreamingCaching - Uber FreightMediumSoftware EngineerLargest Rider Group Where Every Rider's Companion-Count Limits Hold
A coding problem about forming the largest group of riders for a shared car, where each rider accepts only a minimum and maximum number of fellow passengers. It tests reasoning about per-rider interval constraints, careful handling of group-size edge cases, and meeting a linear-time requirement.
Coding & AlgorithmsOnsite - Uber FreightMediumSoftware EngineerLow-Level Design of an In-Memory File System with mkdir and ls
A low-level design interview question asking you to model a basic in-memory file system that supports mkdir and ls. It tests entity and class design for files and directories, representing the directory hierarchy and parent-child links, path resolution, and clear operation semantics.
Software Engineering FundamentalsOnsite - UiPathMediumSoftware EngineerCompute longest distinct substring, case-insensitive
This question evaluates competency in string processing, character normalization for case-insensitivity, algorithmic complexity analysis, and handling large-scale or streaming inputs.
Coding & AlgorithmsTechnical Screen - UiPathMediumSoftware EngineerDescribe project scope and ownership
This question evaluates ownership and technical leadership, including end-to-end project execution, architectural and product decision-making, trade-off analysis, and the ability to quantify impact under constraints.
Behavioral & LeadershipTechnical Screen - UiPathHardSoftware EngineerExplain database design and consistency
This question evaluates proficiency in database design and consistency concepts, covering competencies such as data modeling, datastore selection, partitioning and indexing strategies, consistency semantics, operational trade-offs, validation and testing, and privacy/compliance considerations.
System DesignTechnical Screen - UnityMediumSoftware EngineerDesign a Feature Store for Offline Training and Low-Latency Online Serving
Design a feature store that ingests high-volume event data, produces point-in-time correct training sets, and serves the latest features at low latency in production. It tests streaming and batch feature computation, leakage-free historical joins, online store design, and keeping training and serving consistent.
ML System DesignOnsite - UnityMediumSoftware EngineerImplement a Lightweight ETL Pipeline Scheduler in Python
Implement a small Python scheduler that registers ETL tasks with dependencies and runs a pipeline so that each task executes only after its upstream tasks succeed. It tests clean interface design, dependency ordering with validation, failure and retry handling, and clear reporting of what happened to each task.
Software Engineering FundamentalsOnsite - UpstartEasySoftware EngineerCompute a Point Set's Bounding Rectangle
This problem tests the ability to find the extrema of a coordinate set in a single linear pass to define an axis-aligned bounding box.
Coding & AlgorithmsOnline AssessmentArraysGeometryAlgorithms - UpstartMediumSoftware EngineerCompute buffet revenue with capacity and waiting
This question evaluates event-driven simulation and state-management skills, including handling customer lifecycle, capacity constraints, FIFO queuing behavior, and revenue aggregation.
Coding & AlgorithmsTechnical Screen - UpstartMediumSoftware EngineerCount Words in Lexicographic Order
This problem tests your ability to efficiently process a collection of strings, count their occurrences using a hash map, and output them in a sorted format.
Coding & AlgorithmsOnline AssessmentHash MapSortingStrings - UpstartMediumSoftware EngineerDecode an anagram sentence using vocabulary constraints
This question evaluates string manipulation, anagram detection, and constrained dictionary mapping skills, testing attention to character-level constraints and correct disambiguation among similar vocabulary entries.
Coding & AlgorithmsTechnical Screen - UpstartMediumSoftware EngineerDemonstrate Project Ownership
Practice showing genuine end-to-end ownership through problem framing, trade-offs, delivery, recovery, and operational follow-through.
Behavioral & LeadershipHR Screen
Uber
Uber Freight
UiPath
Upstart