Zoox interview questions

Showing 1–22 of 22 results

• Build a Stateful CalculatorHard

  This question tests the ability to manage complex state transitions in a UI component, specifically handling input sequences, operator precedence, and state consistency in a stateful calculator.

  ZooxFrontend EngineerSoftware Engineering FundamentalsOnsite
• Can a Car Meet a Truck?Hard

  This problem tests your ability to determine if two entities moving on a 2D grid can ever occupy the same coordinate at the same time, using interval arithmetic and pathfinding logic.

  ZooxSoftware EngineerCoding & AlgorithmsOnsite
• Choose fastest way to transfer 2 TBEasy

  This question evaluates a candidate's ability to compare large-scale data transfer methods and reason about trade-offs among bandwidth, latency, security, cost, and logistics, reflecting competency in data engineering, networking, and systems design.

  ZooxData ScientistCoding & AlgorithmsOnsite
• Compute Roller Coaster ScoresMedium

  Tests string parsing, floating-point evaluation, conditional logic, and the implementation of an extensible rule-based scoring engine for ride telemetry.

  ZooxMachine Learning EngineerCoding & AlgorithmsTechnical Screen
• Compute posterior for biased coin after 3H1TMedium

  This question evaluates a candidate's understanding of Bayesian inference, computation of posteriors and Bayes factors, posterior predictive probabilities, and decision-theoretic model selection in a simple biased-coin scenario.

  ZooxData ScientistStatistics & MathTechnical Screen
• Describe resolving a high-stakes research disagreementMedium

  This question evaluates a data scientist's competency in stakeholder communication, leadership in research contexts, and technical reasoning about research design and probability/statistics assumptions, and is categorized under Behavioral & Leadership.

  ZooxData ScientistBehavioral & LeadershipTechnical Screen
• Design Nearby Search for Autonomous VehiclesMedium

  Design a real-time geospatial search and filtering system for an autonomous vehicle fleet. The service must index streaming vehicle telemetry, handle out-of-order updates, and query nearby eligible vehicles with strict latency bounds.

  ZooxSoftware EngineerSystem DesignTechnical Screen
• Design Real-Time Vehicle Location TrackingMedium

  Design a high-throughput, low-latency telemetry ingestion and distribution system that streams autonomous vehicle coordinates to client dashboards and rider apps.

  ZooxBackend EngineerSystem DesignTechnical Screen
• Design Transaction Data Quality ChecksMedium

  This question evaluates the ability to design and implement data quality checks for relational transaction and vendor datasets, focusing on integrity constraints, referential integrity, business-rule validation (refund logic), missing/invalid values, and anomaly detection.

  ZooxData EngineerSoftware Engineering FundamentalsTechnical Screen
• Design a Ride-Hailing PlatformHard

  This question tests your ability to design a highly scalable, real-time geo-spatial matching system that handles low-latency requests for vehicle dispatching and location tracking.

  ZooxBackend EngineerSystem DesignOnsite
• Design navigation-safety simulation parameters and experimentsMedium

  This problem tests your ability to design a high-reliability simulation framework using variance reduction techniques and statistical validation methods to evaluate rare-event autonomous driving scenarios.

  ZooxData ScientistMachine LearningTechnical Screen
• Design teleoperations data models and pipelinesMedium

  This question evaluates competency in data modeling, real-time and batch pipeline architecture, telemetry ingestion, metrics design, and operational monitoring for teleoperations and autonomous vehicle stability.

  ZooxData EngineerSystem DesignOnsite
• Explain C++ References, Pointers, Virtual Methods, and OverridesMedium

  Tests core C++ object model mechanics, including memory representation of pointers versus references, dynamic dispatch internals, and correct usage of virtual methods and the override specifier.

  ZooxSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Explain GPU Memory And Matrix Transpose OptimizationMedium

  Tests understanding of GPU memory hierarchy, memory coalescing, shared memory bank conflicts, and optimization techniques through the canonical matrix transpose problem.

  ZooxSoftware EngineerSoftware Engineering FundamentalsOnsite
• Explain seasons and compound interestMedium

  This question evaluates quantitative reasoning and basic scientific literacy by testing understanding of Earth's axial tilt and seasonal temperature variation alongside exponential growth and compound interest calculations.

  ZooxData EngineerSoftware Engineering FundamentalsOnsite
• Lane-Change Safety and Longitudinal Motion SimulationMedium

  Implement a discrete-time kinematic simulator to evaluate whether an autonomous vehicle can safely execute a lane change given adjacent lead and lag vehicles.

  ZooxSoftware EngineerCoding & AlgorithmsTechnical Screen
• Predict the Output of Go Code Storing Pointers to a for-Loop VariableMedium

  A Go output-prediction question about a for loop that appends the address of its loop variable on every iteration and prints the stored values afterwards. It tests loop-variable semantics across Go language versions, escape analysis, and whether such pointers are safe to dereference.

  ZooxSoftware EngineerSoftware Engineering FundamentalsOnsite
• Predict the Output of a Go Program That Appends to a Sub-SliceMedium

  A Go output-prediction question: a short program takes a sub-slice of a slice, appends to it inside a helper function and prints three slices. It tests how slice headers, length, capacity and shared backing arrays interact with append, and whether a candidate can trace them precisely.

  ZooxSoftware EngineerSoftware Engineering FundamentalsOnsite
• Solve estimation and probability brainteasersEasy

  This question evaluates quantitative estimation, unit conversion, geometric scaling, and basic probability skills across multiple short brainteaser prompts.

  ZooxData ScientistStatistics & MathOnsite
• Three Array Problems for Trading Geometry and GroupingMedium

  Implement three foundational utility functions for an algorithmic trading log analyzer: maximum single-transaction profit, detection of four collinear price points, and deterministic equivalence grouping of trader nicknames.

  ZooxSoftware EngineerCoding & AlgorithmsTechnical Screen
• Write SQL revenue and anomaly queriesMedium

  This question evaluates SQL proficiency and data engineering competency in revenue aggregation, netting purchases and refunds, joining transaction and vendor tables, and designing data quality and anomaly detection checks.

  ZooxData EngineerCoding & AlgorithmsOnsite
• Write Transaction Analytics SQL QueriesMedium

  This question evaluates proficiency in SQL for analytical queries, covering aggregation, time-based filtering, joins between transactions and vendor metadata, and the use of ranking/window functions for top-N calculations.

  ZooxData EngineerCoding & AlgorithmsTechnical Screen