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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.
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Showing 3391–3420 of 9403 results
- Goldman SachsEasyData ScientistCompute the Arc Length of a Curve
Tests single-variable calculus fundamentals, specifically calculating the derivative, setting up the standard arc length integral, and evaluating it using substitution.
Statistics & MathOnline Assessmentcalculusintegrationgeometry - Goldman SachsEasyData ScientistCount Palindromic Substrings
This question tests your ability to identify palindromes within a string using expansion around centers or dynamic programming.
Coding & AlgorithmsOnline AssessmentStringsTwo PointersDynamic Programming - Goldman SachsMediumSoftware EngineerCount segments and optimize 3-server assignment
This two-part problem evaluates array-processing and counting competency for identifying fixed-length strictly increasing subarrays and combinatorial partitioning and optimization competency for assigning elements to three groups to maximize a minimal pairwise-difference metric, and is commonly asked to assess efficient algorithm design, correctness under constraints, and the ability to handle large inputs. Belonging to the Coding & Algorithms domain, it tests practical algorithmic application, data-structure-aware implementation and complexity analysis rather than purely theoretical understanding.
Coding & AlgorithmsOnline Assessment - Goldman SachsMediumSoftware EngineerDescribe a proud project and handling credit conflict
This question evaluates interpersonal and ethical competencies such as ownership, leadership, communication, conflict resolution, and professional integrity in the context of software project work.
Behavioral & LeadershipTechnical Screen - Goldman SachsEasySoftware EngineerDesign a Pastebin Service: Requirements, Entities, APIs and End-to-End Architecture
Design a scalable text sharing (Pastebin) service that generates unique short URLs for submitted text snippets. This question assesses API design, data modeling, storage decoupling, key generation strategies, and caching mechanisms under high read concurrency.
System DesignOnsiteObject StorageCachingKey Generation - Goldman SachsMediumSoftware EngineerDesign a Streaming Metrics Dashboard: Time-Range Queries and Event-Time Watermarks
Design the backend of a dashboard that shows metrics computed from a continuous event stream and lets users query any time range. The discussion focuses on answering range queries from pre-aggregated data and on how watermarks decide when event-time windows are complete despite late or out-of-order events.
System DesignOnsite - Goldman SachsMediumSoftware EngineerDesign a Ten-Minute In-Memory Notification Deduplication Engine
Design a high-throughput, low-latency in-memory deduplication service that identifies and suppresses duplicate notifications within a 10-minute sliding window.
System DesignOnsiteIn-Memory CachingConcurrencyHigh Throughput - Goldman SachsMediumSoftware EngineerDesign a Workspace Resource Manager
This problem tests your ability to design a tree-based hierarchical resource management system and implement efficient operations for path-based access, relocation, and cycle detection.
Coding & AlgorithmsTechnical ScreenTreesGraphsData Structures - Goldman SachsMediumQuantitative ResearcherEstimate Pi with a Square Cardboard and a Fair Die to 5-6 Decimal Places
Using only a square piece of cardboard and a fair six-sided die, design an experiment that estimates pi empirically, then explain how many trials 5 to 6 correct decimal places would require and how you would get there. It tests Monte Carlo design, bias versus variance, and error analysis.
Statistics & MathTechnical Screen - Goldman SachsHardMachine Learning EngineerEvaluate TPR/FPR, sigmoid, and activations
This question evaluates competency in binary classification metrics (confusion matrices, TPR/FPR), basic neural network forward computation (sigmoid neuron z and output), and knowledge of activation function selection and pitfalls.
Machine LearningOnline Assessment - Goldman SachsEasyData ScientistExpected Number of Runs in Coin Tosses
Tests understanding of linearity of expectation and indicator random variables through counting consecutive runs in a sequence of coin tosses.
Statistics & MathOnline Assessmentprobabilityexpected-valuecombinatorics - Goldman SachsMediumSoftware EngineerFind the Root of the Largest Tree in a Child-to-Parent Forest
Given a list of child-to-parent pairs that form a forest of rooted trees, return the root ID of the tree with the most nodes, breaking size ties by the smallest root ID. Tests building a forest from an edge list, identifying roots, counting tree sizes, and applying a precise tie-break rule.
Coding & AlgorithmsTechnical Screen - Goldman SachsMediumQuantitative ResearcherFrom Alpha Signal to Portfolio: Reliability, Regime Dependence and Entropy
Walk through how a quantitative equity team turns a predictive signal into portfolio holdings, then explain how to judge whether the signal is reliable, whether its performance depends on the market regime, and how entropy and mutual information can be used to evaluate signals and portfolios.
Statistics & MathTechnical Screen - Goldman SachsMediumSoftware EngineerHighest Average Student Score: Out-of-Memory Input, Overflow and Thread Safety in Java
Compute the highest average score among students from name and score records, then extend the code for data larger than memory, negative scores, integer overflow and multithreaded processing. The question also covers what atomic operations are in Java and how synchronized differs from ReentrantLock.
Software Engineering FundamentalsOnsite - Goldman SachsMediumProduct ManagerHow to answer HireVue behavioral prompts
Prepare for the How to answer HireVue behavioral prompts 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 - Goldman SachsMediumSoftware EngineerHow would you handle conflict and data pressure?
This question evaluates conflict resolution, leadership communication, ethical judgment, and secure-data governance for a software engineer managing collaborator disagreement and requests involving sensitive information.
Behavioral & LeadershipTechnical Screen - Goldman SachsEasySoftware EngineerImplement a String Deque
This question evaluates competence with fundamental data structures and algorithms by requiring an implementation of a string double-ended queue (deque), checking understanding of constant-time (O(1)) operations, manipulation of node links or references, and correct handling of edge cases; category: Coding & Algorithms; level: practical implementation rather than purely conceptual. It is commonly asked to assess the ability to implement low-level data structure mechanics, guarantee performance bounds, and expose attention to correctness and boundary conditions in algorithmic coding tasks.
Coding & AlgorithmsTechnical Screen - Goldman SachsEasyData ScientistInfer BA When AB Is the Identity
This question tests the understanding of matrix invertibility, the properties of the identity matrix, and the fundamental differences between square and non-square matrix multiplication.
Statistics & MathOnline AssessmentLinear AlgebraMatricesRank - Goldman SachsEasyData ScientistIntegrate a Two-Sided Exponential Density
This question tests the ability to integrate probability density functions (PDFs) over specified intervals, specifically handling the absolute value function in symmetric distributions.
Statistics & MathOnline AssessmentCalculusProbabilityDistributions - Goldman SachsMediumProduct ManagerLeading a Distributed Cross-Divisional Team
Practice leading a distributed cross-divisional team in a regulated industry. The solution covers team charters, RACI/DACI, async communication, time-zone fairness, cultural norms, compliance-by-design, decision logs, trust-building rituals, first-30-day priorities, and team-health metrics.
Behavioral & LeadershipOnsite - Goldman SachsMediumProduct ManagerLottery Coupon Winners Calculation
This question tests a candidate's ability to apply digit dynamic programming to efficiently count integers with specific digit-sum properties over large numeric ranges. It evaluates algorithmic thinking at the intersection of combinatorics and optimization, a category commonly assessed in technical interviews to measure comfort with non-obvious problem reductions and complexity trade-offs.
Product / Decision MakingOnline Assessment - Goldman SachsMediumSoftware EngineerMaximize Element Frequency with Limited Increments
Tests sorting and sliding window techniques to maximize an element's frequency within an increment budget.
Coding & AlgorithmsOnsitearraysliding-windowsorting - Goldman SachsMediumQuantitative ResearcherMinimum-Cost Round Trip Visiting Every City Once with Asymmetric Costs
Given a complete matrix of possibly asymmetric travel costs between up to 16 cities, return the minimum cost of a round trip that starts at city 0, visits every other city exactly once and returns to city 0. The problem tests exact optimization over subsets of cities within tight limits.
Coding & AlgorithmsTechnical Screen - Goldman SachsMediumSoftware EngineerOverlapping Meetings and Minimum Rooms: No Sweep Line, No Library Sort, Streams, Logs
Starting from a list of meeting time intervals, decide whether one person can attend them all, then find the minimum number of rooms without a sweep line, order the meetings without a library sort, handle a stream of meetings, and explain how a Kafka-style append-only log broker works. It tests heaps, sorting, streaming and log storage.
Software Engineering FundamentalsOnsite - Goldman SachsMediumSoftware EngineerRolling Ball Maze Reachability
This problem tests your ability to model a grid-based movement simulation as a graph reachability problem, requiring efficient state traversal.
Coding & AlgorithmsOnsiteBFSGraphsSimulation - Goldman SachsEasySoftware EngineerSearch for a Target in a Matrix Sorted by Rows and Columns
Tests the ability to search efficiently in a 2D grid sorted along both dimensions by exploiting boundary invariants to achieve an O(m + n) time complexity.
Coding & AlgorithmsOnsitearraysmatrixbinary-search - Goldman SachsMediumSoftware EngineerSkip-Level Behavioral: Commitment, Working With PMs and EMs, and Following Up on SLAs
A skip-level manager behavioral round that probes a commitment-to-delivery mindset, asks for a walkthrough of a significant past project, and focuses on how the candidate works with product and engineering managers and tracks and follows through on SLAs. It tests ownership, stakeholder management and reliability.
Behavioral & LeadershipOnsite - Goldman SachsMediumSoftware EngineerSolve string and hashmap coding tasks
This problem tests your ability to manipulate strings, utilize hash maps for grouping data, and perform iterative simulations based on sequential command logs.
Coding & AlgorithmsTechnical ScreenStringsHashMapsData-Processing - Goldman SachsMediumSoftware EngineerSolve string and hashmap interview tasks
This question evaluates proficiency in string manipulation and hash-based aggregation, specifically skills such as frequency counting, map/dictionary usage, and numeric aggregation for averages.
Coding & AlgorithmsTechnical Screen - Goldman SachsMediumQuantitative ResearcherTotal Rainwater Trapped Above an Elevation Profile of Unit-Width Bars
Given the heights of adjacent unit-width bars in an elevation profile, compute the total amount of rainwater that stays trapped between them after rain, with water spilling off both open ends. The coding problem tests reasoning about the bars that bound each position and handling up to 100,000 bars efficiently.
Coding & AlgorithmsTechnical Screen
Goldman Sachs