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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.
- 9403
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- 546
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- 11
- Topics
- 8
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Showing 1621–1650 of 9403 results
- BlackRockMediumSoftware EngineerImplement sorting and set intersection with input parsing
This question evaluates proficiency in algorithm design and implementation, specifically sorting algorithms, set intersection logic, input parsing, and analysis of time/space complexity and algorithm stability within the Coding & Algorithms domain.
Coding & AlgorithmsOnline Assessment - BlackRockMediumSoftware EngineerSolve hierarchy distance and digit-square convergence
This question evaluates understanding of tree and graph modeling, shortest-path reasoning, iterative function behavior and cycle detection, along with time and space complexity analysis within the Coding & Algorithms domain.
Coding & AlgorithmsOnline Assessment - BlackRockMediumData EngineerSolve two interval array problems
This question evaluates proficiency with array and interval-manipulation concepts—specifically sorting, merging overlapping ranges, and robust edge-case handling in interval operations.
Coding & AlgorithmsTechnical Screen - BlackRockEasyProduct ManagerWhy BlackRock and Beyond Resume?
Prepare for the Why BlackRock and Beyond Resume? interview question with a structured prompt, clarifying questions, answer rubric, follow-up probes, and a stronger model solution. This behavioral & leadership guide helps candidates frame assumptions, trade-offs, metrics, and role-relevant evidence without relying on generic answers.
Behavioral & LeadershipTechnical Screen - BlinkHardSoftware EngineerDesign a Support Ticket Processing System
This question tests your ability to design a distributed, asynchronous ticket processing system that handles high volume, prioritizes SLAs, and ensures reliable data delivery.
System DesignOnsiteScalabilityMessage QueuesDistributed Systems - Block (Square)MediumData ScientistBuild referral chains and detect cycles
This question evaluates graph algorithm competencies such as referral-chain traversal, cycle detection, handling noisy input data, and reasoning about time and space complexity for efficient per-node computation.
Coding & AlgorithmsTechnical Screen - Block (Square)MediumData ScientistWrite left-join queries with tricky filters
This question evaluates SQL data-manipulation skills including LEFT JOIN semantics, aggregation functions like COUNT(DISTINCT) and SUM, GROUP BY/HAVING logic, and date-window filtering for referral and order analytics.
Data Manipulation (SQL/Python)Technical Screen - BloombergMediumSoftware EngineerAdd Two Forward-Order Lists
This problem tests your ability to perform manual addition on numbers represented by linked lists where the most significant digit comes first, requiring either stack-based reversal or recursive backtracking.
Coding & AlgorithmsTechnical ScreenLinked ListMathStack - BloombergMediumSoftware EngineerAnswer project and leadership behavioral questions
This question evaluates leadership, project management, communication, reflection, conflict resolution, and task-allocation competencies within the Behavioral & Leadership domain for a software engineering role.
Behavioral & LeadershipTechnical Screen - BloombergMediumSoftware EngineerCheck equal character frequencies
This problem tests your ability to use frequency mapping to determine if a string can be transformed into a state where all characters appear the same number of times through a single character removal.
Coding & AlgorithmsTechnical ScreenStringHash MapFrequency Analysis - BloombergEasySoftware EngineerCompute meeting rooms and evaluate RPN
This problem tests interval management using sorting and heap-like logic for resource allocation, combined with stack manipulation to evaluate mathematical expressions.
Coding & AlgorithmsTechnical ScreenSortingHeapStack - BloombergMediumSoftware EngineerCount friend requests based on age rules
This question evaluates algorithmic problem-solving skills involving array processing, counting and combinatorics under conditional constraints and frequency handling.
Coding & AlgorithmsTechnical Screen - BloombergMediumSoftware EngineerCount islands by requested sizes
This problem tests your ability to use graph traversal (DFS/BFS) to identify connected components in a grid and efficiently query their sizes using frequency maps.
Coding & AlgorithmsTechnical ScreenGraphsDFSGrid - BloombergHardSoftware EngineerDescribe leading an end-to-end client project
This question evaluates leadership, client‑facing project management, requirements elicitation, scope negotiation, stakeholder communication, and maintainability practices within full‑stack software delivery.
Behavioral & LeadershipTechnical Screen - BloombergMediumSoftware EngineerDesign A Real-Time VWAP Analytics Provider
Tests the ability to design an ultra-low-latency, stateful streaming pipeline that ingests heterogeneous market data feeds, maintains running volume-weighted aggregates, handles trade adjustments, and serves high-throughput subscriber fanout.
System DesignTechnical ScreenStream ProcessingLow LatencyFinancial Systems - BloombergMediumSoftware EngineerDesign a Card Deck with Shuffling, Dealing, and Five-Card Poker Comparison
Design an object-oriented card deck with unbiased shuffling, atomic dealing, and complete five-card poker rankings, kickers, ace-low straights, and ties.
Software Engineering FundamentalsTechnical Screen - BloombergHardSoftware EngineerDesign a data structure for dynamic top‑K frequency
This question evaluates data structure and algorithm design skills, focusing on frequency counting, dynamic maintenance of top-K elements, and efficient update and query operations in a multiset within the Coding & Algorithms domain.
Coding & AlgorithmsTechnical Screen - BloombergMediumSoftware EngineerDesign a fair event registration queue API
This question tests the ability to design a thread-safe, high-concurrency registration system that handles FIFO ordering, capacity constraints, and efficient cancellation operations.
System DesignOnsiteConcurrencyData StructuresAPI Design - BloombergMediumSoftware EngineerDesign a packet reassembler API
This question evaluates API design, stream-oriented buffer management, stateful packet assembly, input validation, concurrency control, testing strategy, and time/space complexity reasoning.
System DesignTechnical Screen - BloombergMediumSoftware EngineerDesign an in-memory TODO list API
This problem tests your ability to design a thread-safe, in-memory API for managing tasks, focusing on selecting efficient data structures for retrieval and update operations.
Software Engineering FundamentalsTechnical ScreenAPI DesignConcurrencyHash Maps - BloombergMediumSoftware EngineerDesign in-memory trade subscription processor
This question evaluates a candidate's ability to design concurrent, high-throughput in-memory subscription matching systems, covering skills in data structure selection, algorithmic complexity analysis, and concurrency control.
System DesignOnsite - BloombergHardSoftware EngineerDesign streaming mention analytics with search and alerts
This question tests the ability to design a distributed, low-latency streaming pipeline that aggregates mention counts for entities, provides search capabilities, and triggers alerts based on configurable thresholds.
System DesignOnsiteDistributed SystemsStream ProcessingReal-time Analytics - BloombergMediumSoftware EngineerDesign variable-size LRU cache
This question evaluates understanding of cache design and eviction policies (LRU), management of variable-sized entries and memory budgeting, and the implementation of efficient data structures that support amortized O(1) access, updates and correct capacity accounting.
Coding & AlgorithmsTechnical Screen - BloombergHardSoftware EngineerDetect Recent Duplicate Records with Bounded Memory
Design a memory-bounded streaming duplicate detector that identifies repeated news/document records within a sliding time window and evicts expired content to prevent memory leaks.
Coding & AlgorithmsTechnical ScreenSliding WindowHash TableQueue - BloombergMediumSoftware EngineerDetermine Balloon Popping Time
This problem tests your ability to model a grid-based propagation process as a shortest-path problem on a weighted graph, requiring an understanding of Dijkstra's algorithm or Breadth-First Search variants.
Coding & AlgorithmsTechnical ScreenGraphBFSShortest Path - BloombergHardSoftware EngineerExplain Kafka partitions and delivery semantics
This question evaluates understanding of distributed messaging and stream-processing concepts—specifically Kafka internals such as partitions, replication, consumer groups, and delivery semantics—and the candidate's competency in reasoning about ordering, scalability, fault tolerance, and transactional guarantees.
System DesignTechnical Screen - BloombergMediumSoftware EngineerFind maximum cable length by cutting
This question evaluates a candidate's proficiency in algorithm design, particularly applying binary search over a monotonic answer space and managing integer versus floating-point precision when maximizing piece length.
Coding & AlgorithmsTechnical Screen - BloombergMediumSoftware EngineerFind the Lowest Common Ancestor of Two Nodes in an N-ary Tree
Given a rooted tree whose nodes can have any number of children, stored as child lists, return the lowest common ancestor of two labeled nodes. The problem generalizes the binary-tree version to arbitrary fan-out and tests tree traversal, ancestor reasoning, and robust handling of very deep, path-shaped trees.
Coding & AlgorithmsTechnical Screen - BloombergMediumSoftware EngineerFlag Fraudulent Transactions by Amount and Travel Time
This problem tests your ability to use hash maps for efficient lookups and filtering collections based on conditional business logic.
Coding & AlgorithmsTechnical ScreenHash MapsAlgorithmsData Structures - BloombergMediumSoftware EngineerGenerate all strings by expanding wildcards
This question evaluates algorithmic string manipulation and combinatorial enumeration skills, focusing on handling wildcard characters and generating all possible binary outcomes from a pattern.
Coding & AlgorithmsOnsite
Bloomberg