Oracle interview questions

Showing 31–60 of 104 results

• Design a Video Upload Service for 100 GB Files with Chunked, Resumable UploadsMedium

  A system design question about building a service that accepts video uploads of up to 100 GB. It covers moving very large files efficiently, splitting them into chunks, resuming interrupted uploads, choosing storage for bytes and metadata, and scaling to many concurrent uploads.

  OracleSoftware EngineerSystem DesignTechnical Screen
• Design a like-count system for a large video platform with viral-video burstsMedium

  A system design question for the like feature of a large video platform. It probes one-like-per-user correctness, serving counts and viewer state at huge read volume, absorbing bursts of likes on viral videos, exact versus approximate counting trade-offs, counter reconciliation, and abuse protection.

  OracleSoftware EngineerSystem DesignOnsite
• Design a photo-sharing social network with follows, media uploads and a home feedMedium

  A system design question for a photo and video sharing social network with follows, media uploads and a home feed. It probes estimation, media storage and delivery, feed generation for ordinary and very popular accounts, data modeling, caching, and defending trade-offs under heavy cross-questioning.

  OracleSoftware EngineerSystem DesignOnsite
• Design a rate limiterMedium

  This question evaluates a candidate's ability to design scalable, correct distributed rate limiting mechanisms, testing competencies in distributed systems, concurrency control, API gateway behavior, observability, and configurability within the System Design domain.

  OracleSoftware EngineerSystem DesignOnsite
• Design an E-Commerce Recommendation System from Browsing HistoryMedium

  This problem tests the ability to architect a scalable, low-latency recommendation engine that translates real-time user activity into personalized product suggestions.

  OracleSoftware EngineerML System DesignOnsite
• Design an Enterprise Remote Browser Isolation SystemMedium

  This problem tests the ability to architect a low-latency, secure isolation platform that bridges the gap between untrusted web content and enterprise endpoints.

  OracleSoftware EngineerSystem DesignOnsite
• Design an Internal Metrics Ingestion ServiceMedium

  Design a scalable internal metrics collection and storage platform capable of ingesting high-throughput time-series data from hundreds of thousands of hosts, decoupling ingestion from query workloads.

  OracleSoftware EngineerSystem DesignOnsite
• Design scalable, highly available GenAI servingHard

  This question evaluates understanding of scalable, highly available generative AI inference platforms and associated competencies in distributed systems, ML model serving, autoscaling and GPU scheduling, global request routing, model/version management, stateful dependency handling, observability, and rate limiting.

  OracleSoftware EngineerML System DesignOnsite
• Design structure for first unique login userEasy

  This question evaluates a candidate's ability to design an efficient online data structure that maintains a stream of login events and supports constant-time updates and queries for the earliest user with exactly one login.

  OracleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Detect whether a directed graph given as an edge list contains a cycleMedium

  A coding question that asks whether a directed graph, given as a node count and a list of edges, contains at least one directed cycle. It tests graph traversal on large inputs and careful handling of self-loops, duplicate edges, converging paths and disconnected components.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Enumerate Right-and-Down Paths Through a Binary MatrixMedium

  This problem tests your ability to explore paths in a grid using depth-first search (DFS) with backtracking while maintaining lexicographical output constraints.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Evaluate Subjective and Nondeterministic Agent OutputsHard

  Create an evaluation program for subjective, nondeterministic AI-agent outputs when direct user feedback is sparse. Cover stratified tasks, versioned rubrics, repeated sampling, calibrated human review, judge agreement and bias, uncertainty-aware comparisons, severe-failure gates, online signals, and rollback criteria.

  OracleSoftware EngineerML System DesignTechnical Screen
• Explain How You Use AI in Software EngineeringMedium

  This question assesses the candidate's practical experience with AI-assisted coding tools, their ability to critically evaluate machine-generated output, and their awareness of engineering rigor regarding security and code quality.

  OracleBackend EngineerBehavioral & LeadershipOnsite
• Explain Java String Storage and Construction ChoicesMedium

  Tests deep understanding of Java string memory representation, the string constant pool, immutability, and construction performance trade-offs.

  OracleSoftware EngineerSoftware Engineering FundamentalsOnsite
• Explain Medical AI Data and EvaluationMedium

  This question tests the ability to design an end-to-end evaluation and data pipeline for a clinical conversational agent, emphasizing safety, bias mitigation, and rigorous validation in a high-stakes environment.

  OracleData ScientistMachine LearningTechnical Screen
• Explain What Motivates You at WorkMedium

  This question assesses your self-awareness, professional values, and how your personal work style aligns with the challenges of a fast-paced software engineering environment.

  OracleSoftware EngineerBehavioral & LeadershipTechnical Screen
• Explain a Difficult Technical DecisionMedium

  This question assesses a candidate's ability to articulate complex technical trade-offs, stakeholder management, and the ability to reflect on past decision-making processes.

  OracleBackend EngineerBehavioral & LeadershipOnsite
• Explain a Team-Owned System ArchitectureMedium

  This question tests your ability to articulate the high-level architecture of a complex system you have worked on, focusing on data consistency, system scalability, and the rationale behind specific design choices.

  OracleSoftware EngineerSoftware Engineering FundamentalsOnsite
• Explain your project system designHard

  This interview question evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer for Explain your project system design states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  OracleSoftware EngineerSystem DesignOnsite
• Extend and optimize an existing CLI toolMedium

  This problem tests your ability to refactor legacy CLI code, implement modular features, and optimize performance for large-scale data processing.

  OracleSoftware EngineerSoftware Engineering FundamentalsOnsite
• Fewest Coins for an Amount with Unlimited or Single-Use CoinsMedium

  Return the fewest coins that add up exactly to an amount, first when every coin value can be reused without limit and then when each listed coin can be used at most once. An onsite coding problem that tests the difference between unlimited and single-use selection and the handling of amounts that cannot be formed.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Find Each Island's Maximum HeightMedium

  This problem tests your ability to perform graph traversal (BFS/DFS) on a 2D grid while maintaining state across connected components.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Find Global and Rolling Top-K URLs Under a Memory LimitMedium

  Design a memory-bounded distributed analytics system to compute both global (all-time) and rolling 24-hour top-K accessed URLs from a high-throughput event stream.

  OracleSoftware EngineerSystem DesignOnsite
• Find shortest subarray meeting target sumMedium

  Find shortest subarray meeting target sum 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.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Find the Best Profit from One Stock TradeMedium

  Tests array traversal, greedy state tracking, and achieving optimal O(n) time and O(1) space complexity for trade optimization.

  OracleBackend EngineerCoding & AlgorithmsOnsite
• Find the Lexicographically Maximum SuffixMedium

  This problem tests string manipulation, greedy algorithm design, and efficiency. It requires an O(n) solution to avoid Time Limit Exceeded errors on long strings, as naive O(n^2) comparisons will fail.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Find users with at least one valid sessionMedium

  This question evaluates the ability to parse and process event logs, pair signin/signout events per user, and handle unordered timestamps and per-user state with time-window constraints.

  OracleSoftware EngineerCoding & AlgorithmsOnsite
• Handle On-Call IncidentsMedium

  Review an evidence-led on-call approach covering severity, reversible mitigation, communication, verified recovery, and durable corrective actions.

  OracleSoftware EngineerBehavioral & LeadershipOnsite
• Handle a Tight Deadline You Could Not MeetMedium

  This question assesses the candidate's ability to identify project risks early, manage stakeholder expectations through transparent communication, and implement process improvements to prevent recurrence.

  OracleBackend EngineerBehavioral & LeadershipOnsite
• How do you prioritize and handle failures?Hard

  This question evaluates prioritization, incident-response and failure-management competencies including stakeholder communication, customer-impact mitigation, and learning-from-failure within the Behavioral & Leadership category for software engineers, emphasizing practical, experience-based application rather than abstract theory.

  OracleSoftware EngineerBehavioral & LeadershipTechnical Screen