Big tech

Oracle.

Databases, enterprise applications and Oracle Cloud Infrastructure (OCI) - compute, storage, networking and managed services.

its questions lean on

cloud control-plane services
rate limiting
workflows and sagas
scheduling and notifications
schema design
LLD with changing requirements

The rounds, as candidates describe them

HLD/LLDAn OCI IC2 loop opened with a 60-minute design round where the interviewer changed requirements mid-way.source ↗
Hiring managerTeam products, what you would work on, and a deep dive on a recent project.source ↗
DSA, design and behaviouralLater rounds mix DSA, HLD or system design, and behavioural questions.source ↗
Bar raiserOCI calls it the "bar tender" round; it digs into your current project, design patterns and multithreading.source ↗

Reported by candidates

From public interview write-ups; each links its source.

Design a Rate LimiterSystem design
IP-02 · Design a Rate Limiter →W01 · DAY 03 · Rate Limiting at Scale →reported in:LeetCode Discuss · Oracle OCI IC3, Bangalore (2023) ↗LeetCode Discuss · OCI MTS IC2 (2024) ↗
Design a URL ShortenerSystem design
IP-01 · Design a URL Shortener →W01 · BOSS · Design a URL Shortener at Scale →reported in:LeetCode Discuss · Oracle OCI IC3, Bangalore, June 2021 ↗LeetCode Discuss · Oracle OCI SMTS (UI), Feb 2025 ↗
Design a File Sync ServiceSystem design
IP-10 · Design a File Sync Service (Dropbox / Google Drive) →SQ-08 · AWS S3 →reported in:LeetCode Discuss · OCI IC3, Bangalore, Jan 2021 ↗
Design InstagramSystem design
SQ-21 · Instagram Feed and Stories →IP-07 · Design a News Feed →reported in:LeetCode Discuss · OCI IC3, Bangalore, Jan 2021 ↗LeetCode Discuss · Oracle OCI SMTS (2024) ↗
Design a Parking Finder that Shows Free Spaces NearbySystem design
IP-13 · Design a Proximity Service →LLD-01 · Design a Parking Lot →reported in:LeetCode Discuss · Oracle OCI IC2, Bangalore, March 2022 ↗
Design a Video Streaming ServiceSystem design
SQ-19 · YouTube Video Platform →SQ-06 · Netflix Streaming →reported in:LeetCode Discuss · Oracle OCI IC3, India (2023) ↗
Design a Task Scheduler (LLD)Low-level design
IP-17 · Design a Distributed Job Scheduler →W02 · DAY 05 · Distributed Cron & Job Scheduling →reported in:LeetCode Discuss · Oracle OCI IC3, Bangalore (2023) ↗LeetCode Discuss · OCI SMTS, 6 Years, Reject (2024) ↗
Design a Notification SystemSystem design
IP-06 · Design a Notification System →W06 · DAY 02 · Core Notification Flow →reported in:LeetCode Discuss · OCI SMTS, 6 Years, Reject (2024) ↗
Design a Resource Inventory Service for a Cloud ProviderSystem design
W01 · DAY 01 · Partitioning Deep-Dive →W07 · DAY 01 · Search Fundamentals & Architecture →W09 · DAY 01 · Tenant Isolation Strategies →reported in:LeetCode Discuss · OCI SMTS, 6 Years, Reject (2024) ↗
Design a Workflow Service for Cloud Resource ProvisioningSystem design
W05 · DAY 03 · Saga Orchestration Deep Dive →W05 · DAY 02 · Distributed Transactions — The Saga Pattern →reported in:LeetCode Discuss · Oracle OCI SMTS (2024) ↗
Design a Recommendation System for an Online Book StoreSystem design
W08 · DAY 02 · Streaming vs Batch Processing →reported in:LeetCode Discuss · Oracle OCI IC3, India (2023) ↗
Design a Log Scanner that Raises Tickets on ExceptionsSystem design
W10 · DAY 02 · Observability →W08 · DAY 01 · Event Ingestion at Scale →reported in:LeetCode Discuss · Oracle OCI IC3, India (2023) ↗
Design a Live Cricket Score App like Cricbuzz (Schema)Low-level design
W04 · DAY 03 · Thundering Herd →W08 · DAY 03 · Data Modeling for Analytics →reported in:LeetCode Discuss · Oracle OCI IC2, Verbal offer (2024) ↗

Likely, from what they build

Our pick, not a report: questions that fit Oracle's products.

Design an Object Storage ServiceSystem design
SQ-08 · AWS S3 →IP-03 · Design a Distributed Key-Value Store →W01 · DAY 02 · Replication Trade-offs →

Study path

Every lesson the questions above point to, once, in order.

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