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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 1111–1140 of 5874 results
- BelvederetradingMediumSoftware EngineerImplement Concurrent Utilities in C++
This question tests your ability to implement a thread-safe, generic blocking queue in C++ using synchronization primitives like mutexes and condition variables.
Coding & AlgorithmsOnsiteC++ConcurrencyMultithreading - Bilt RewardsMediumSoftware EngineerDebug and Fix Failing Unit Tests in Java
This question evaluates proficiency in debugging and maintaining a Java codebase with failing unit tests, testing competencies in unit testing, fault isolation, reading test assertions and stack traces, and verifying regression-free fixes.
Coding & AlgorithmsTechnical Screen - Bilt RewardsMediumSoftware EngineerDesign a Configurable Reward Points Service
Design a highly available and auditable reward points service that ingests credit card and rent transactions, evaluates versioned earning rules, and maintains an append-only double-entry ledger.
System DesignTechnical ScreenLedgerIdempotencyFintech - Bilt RewardsMediumSoftware EngineerRepair and Extend a Transaction Reward Processor
Implement and debug a layered transaction reward processing engine that calculates category-based points, applies promotional multipliers, enforces monthly qualification thresholds, and maintains strict idempotency.
Software Engineering FundamentalsTechnical ScreenSoftware EngineeringData StructuresSystem Design - Bilt RewardsMediumSoftware EngineerWrite SQL to Join Merchants and Triple Restaurant Points
This question evaluates SQL querying and data engineering competencies—specifically JOINs, conditional logic (CASE), ETL staging, data cleaning, indexing, and approximate string matching—within the data manipulation and database domain and emphasizes practical application of SQL for transforming transactional datasets.
Data Manipulation (SQL/Python)Technical Screen - BitGoMediumSoftware EngineerExplain your most impactful project end-to-end
This question evaluates project leadership, end-to-end technical ownership, system design reasoning, stakeholder management, and impact measurement competencies within software engineering.
Behavioral & LeadershipTechnical Screen - BitGoMediumSoftware EngineerSolve and extend the Knapsack problem
This question evaluates a candidate's understanding of dynamic programming for optimization problems, specifically the 0/1 knapsack formulation, space-optimized DP and the ability to reconstruct a chosen item set from compressed state.
Coding & AlgorithmsTechnical Screen - BitdeerHardSoftware EngineerDefend an AI Infrastructure Project's Architecture Step by Step on a Flow Diagram
Walk interviewers through a past project, with questions leaning toward AI infrastructure, by drawing its end-to-end flow and explaining the architecture of each step while being interrupted and challenged. Tests technical depth, ownership, design rationale, trade-off reasoning and composure under probing.
Behavioral & LeadershipTechnical Screen - BitkernelMediumSoftware EngineerAnalyze TCP three-way handshake states
This question evaluates understanding of TCP connection establishment and the TCP state machine, testing recognition of correct state transitions during the three-way handshake and related transport-layer behavior.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerChoose best prompt for AI code debugging
This question evaluates a candidate's competency in prompt engineering and AI-assisted debugging, focusing on structuring diagnostic information, providing error context, and communicating expected versus actual behavior.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerClassify concurrency anomaly between two transactions
This question evaluates proficiency in database concurrency control and transaction isolation within the Software Engineering Fundamentals domain, focusing on identifying concurrency anomalies that affect data integrity and update correctness.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerCount binary search steps for specific keys
This question evaluates understanding of binary search mechanics, counting comparisons during a specific execution, and competency in algorithmic analysis and control-flow reasoning.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerEvaluate C for-loop execution count
This question evaluates understanding of C expression evaluation and control-flow semantics, focusing on how assignment expressions interact with loop conditions and variable updates.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerFind minimum two’s-complement value with three ones
This question evaluates understanding of two's-complement representation and bit-level reasoning, specifically how constrained bit counts affect signed 8-bit integer values.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerIdentify incorrect HTTP status code description
This question evaluates understanding of HTTP status code semantics, including the meanings of response classes and individual status numbers, testing knowledge of web protocols and HTTP behavior within Software Engineering Fundamentals.
Software Engineering FundamentalsOnline Assessment - BitkernelHardSoftware EngineerImplement popup and redirect in JavaScript
This question evaluates proficiency with client-side JavaScript, including browser APIs, DOM-based UI creation for popups, event handling, navigation mechanisms, and simple input validation for redirects.
Coding & AlgorithmsOnline Assessment - BitkernelMediumSoftware EngineerOrder SQL query logical processing steps
This question evaluates a candidate's understanding of SQL-92 logical query processing order and relational query semantics, testing competency in reasoning about clause evaluation, aggregation, and filtering.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerSolve cups logic puzzle with one true statement
This question evaluates logical reasoning and propositional-logic skills, assessing the ability to analyze mutually dependent statements and derive consistent conclusions within a constraint-satisfaction context.
Software Engineering FundamentalsOnline Assessment - BitkernelMediumSoftware EngineerTrace first pass of heap sort
This question evaluates understanding of heap sort and heap operations, specifically max-heap construction, root extraction, and subsequent heapify steps during an in-place array sort.
Software Engineering FundamentalsOnline Assessment - BlackRockMediumSoftware EngineerDemonstrate alignment with UBS culture
This question evaluates a candidate's behavioral alignment with company culture by testing client focus, collaborative problem-solving across cross-functional teams, risk awareness, and integrity, along with the ability to quantify impact.
Behavioral & LeadershipOnline Assessment - BlackRockEasySoftware EngineerDesign paint editor with undo/redo
This question evaluates a candidate's ability to implement mutable state management, efficient data structures and algorithms for pixel operations (draw, erase, flood fill) alongside correct undo/redo history tracking and state consistency.
Coding & AlgorithmsTechnical Screen - BlackRockEasySoftware EngineerEvaluate a verbal reasoning passage
This question evaluates verbal reasoning and logical inference by requiring classification of statements as True, False, or Cannot Say from a short passage; it belongs to the Cognitive Ability/Logic domain and targets conceptual understanding rather than practical application.
Statistics & MathOnline Assessment - 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 - 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 - 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
Bloomberg