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Online Assessment DSA / Coding Machine Coding Low-Level Design

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Online Assessment DSA / Coding Machine Coding Low-Level Design System Design Tech Deep-Dive Hiring Manager Behavioral / HR

Round 05 · 60 questions

System Design

High-level architecture of a large-scale system.

1Password
Design a typeahead / autocomplete service.
Full-stackSeniorHard◆ Commonly asked
#trie#cache#ranking
PracticeGeeksforGeeks Search
1Password
Design an append-only, queryable audit-log service.
Full-stackSeniorMedium◆ Commonly asked
#storage#immutability
PracticeGeeksforGeeks Search
1Password
Design a content delivery network (CDN).
FrontendSeniorHard◆ Commonly asked
#cdn#cache#edge
PracticeGeeksforGeeks Search
1Password
Design a component/design-system architecture for many teams.
FrontendSeniorMedium◆ Commonly asked
#frontend#design-system
PracticeGeeksforGeeks Search
1Password
Design a news feed / timeline.
BackendStaff+Hard◆ Commonly asked
#fanout#ranking#cache
PracticeGeeksforGeeks Search
1Password
Design a distributed unique ID generator.
BackendStaff+Medium◆ Commonly asked
#snowflake#distributed
PracticeGeeksforGeeks Search
Abridge
Design a ride-sharing service like Uber.
FrontendStaff+Hard◆ Commonly asked
#geospatial#matching
PracticeGeeksforGeeks Search
Abridge
Design a distributed key-value store.
FrontendStaff+Hard◆ Commonly asked
#replication#consistency
PracticeGeeksforGeeks Search
Abridge
Design a distributed task queue like Celery.
Full-stackStaff+Hard◆ Commonly asked
#queues#workers
PracticeGeeksforGeeks Search
Abridge
Design a video-call UI with grid and speaker views.
Full-stackStaff+Hard◆ Commonly asked
#frontend#webrtc#perf
PracticeGeeksforGeeks Search
Acko
Design a search indexing pipeline (crawl to index to serve).
BackendSeniorHard◆ Commonly asked
#indexing#pipeline
PracticeGeeksforGeeks Search
Acko
Design a video streaming service like YouTube.
BackendSeniorHard◆ Commonly asked
#cdn#storage#transcoding
PracticeGeeksforGeeks Search
Acko
Design a chat application like WhatsApp.
FrontendStaff+Hard◆ Commonly asked
#websocket#fanout#storage
PracticeGeeksforGeeks Search
Acko
Design a news feed / timeline.
FrontendStaff+Hard◆ Commonly asked
#fanout#ranking#cache
PracticeGeeksforGeeks Search
Activision Blizzard
Design a webhook delivery system with retries.
BackendSeniorMedium◆ Commonly asked
#reliability#queues
PracticeGeeksforGeeks Search
Activision Blizzard
Design an online code judge / evaluator.
BackendSeniorHard◆ Commonly asked
#sandboxing#queues
PracticeGeeksforGeeks Search
Adobe
Design a multi-tenant SaaS data model.
BackendStaff+Hard◆ Commonly asked
#multi-tenancy#databases
PracticeGeeksforGeeks Search
Adobe
Design a search indexing pipeline (crawl to index to serve).
BackendStaff+Hard◆ Commonly asked
#indexing#pipeline
PracticeGeeksforGeeks Search
Adobe
Design a feature-flag service.
BackendSeniorMedium◆ Commonly asked
#config#rollout
PracticeGeeksforGeeks Search
Adobe
Design a distributed unique ID generator.
BackendSeniorMedium◆ Commonly asked
#snowflake#distributed
PracticeGeeksforGeeks Search
Affirm
Design a large dashboard with many live widgets.
FrontendStaff+Hard◆ Commonly asked
#frontend#realtime#perf
PracticeGeeksforGeeks Search
Affirm
Design an object storage service like S3.
FrontendStaff+Hard◆ Commonly asked
#storage#scale
PracticeGeeksforGeeks Search
Affirm
Design a video-call UI with grid and speaker views.
Full-stackStaff+Hard◆ Commonly asked
#frontend#webrtc#perf
PracticeGeeksforGeeks Search
Affirm
Design an online code judge / evaluator.
Full-stackStaff+Hard◆ Commonly asked
#sandboxing#queues
PracticeGeeksforGeeks Search
Airbnb
Design a ride-matching backend (riders ↔ nearby drivers).
BackendSeniorHard◆ Commonly asked
#geospatial#matching#realtime
PracticeGeeksforGeeks Search
Airbnb
Design a webhook delivery system with retries.
BackendSeniorMedium◆ Commonly asked
#reliability#queues
PracticeGeeksforGeeks Search
Airbnb
Design a pastebin with expiring links.
FrontendStaff+Medium◆ Commonly asked
#storage#ttl
PracticeGeeksforGeeks Search
Airbnb
Design a file-sharing service with permissions.
FrontendStaff+Medium◆ Commonly asked
#storage#acl
PracticeGeeksforGeeks Search
Airtable
Design a leaderboard for millions of players.
BackendSeniorMedium◆ Commonly asked
#redis#ranking
PracticeGeeksforGeeks Search
Airtable
Design a file-sharing service with permissions.
BackendSeniorMedium◆ Commonly asked
#storage#acl
PracticeGeeksforGeeks Search
Airtable
Design a chat application like WhatsApp.
FrontendStaff+Hard◆ Commonly asked
#websocket#fanout#storage
PracticeGeeksforGeeks Search
Airtable
Design an offline-capable web app with sync.
FrontendStaff+Hard◆ Commonly asked
#frontend#offline#sync
PracticeGeeksforGeeks Search
Airtel
Design an accessible internationalized form system.
FrontendStaff+Medium◆ Commonly asked
#frontend#a11y#i18n
PracticeGeeksforGeeks Search
Airtel
Design a component/design-system architecture for many teams.
FrontendStaff+Medium◆ Commonly asked
#frontend#design-system
PracticeGeeksforGeeks Search
Airtel
Design an object storage service like S3.
Full-stackStaff+Hard◆ Commonly asked
#storage#scale
PracticeGeeksforGeeks Search
Airtel
Design a webhook delivery system with retries.
Full-stackStaff+Medium◆ Commonly asked
#reliability#queues
PracticeGeeksforGeeks Search
Airtel
Design a news feed / timeline.
Full-stackSeniorHard◆ Commonly asked
#fanout#ranking#cache
PracticeGeeksforGeeks Search
Airtel
Design a rate limiter for a public API.
Full-stackSeniorMedium◆ Commonly asked
#token-bucket#redis
PracticeGeeksforGeeks Search
Akamai
Design a real-time collaborative editor (client side).
FrontendStaff+Hard◆ Commonly asked
#frontend#crdt#realtime
PracticeGeeksforGeeks Search
Akamai
Design a content delivery network (CDN).
FrontendStaff+Hard◆ Commonly asked
#cdn#cache#edge
PracticeGeeksforGeeks Search
Akamai
Design a payment processing + idempotency system.
Full-stackStaff+Hard◆ Commonly asked
#idempotency#consistency
PracticeGeeksforGeeks Search
Akamai
Design a notification system (push/email/SMS).
Full-stackStaff+Medium◆ Commonly asked
#queues#fanout
PracticeGeeksforGeeks Search
Algolia
Design a rate limiter for a public API.
BackendStaff+Medium◆ Commonly asked
#token-bucket#redis
PracticeGeeksforGeeks Search
Algolia
Design a file-sharing service with permissions.
BackendStaff+Medium◆ Commonly asked
#storage#acl
PracticeGeeksforGeeks Search
Algolia
Design a ticket booking system (inventory + concurrency).
BackendSeniorHard◆ Commonly asked
#concurrency#transactions
PracticeGeeksforGeeks Search
Algolia
Design a search indexing pipeline (crawl to index to serve).
BackendSeniorHard◆ Commonly asked
#indexing#pipeline
PracticeGeeksforGeeks Search
Alibaba
Design an inventory reservation system for checkout.
Full-stackSeniorHard◆ Commonly asked
#concurrency#transactions
PracticeGeeksforGeeks Search
Alibaba
Design a multi-tenant SaaS data model.
Full-stackSeniorHard◆ Commonly asked
#multi-tenancy#databases
PracticeGeeksforGeeks Search
Alibaba
Design a real-time collaborative editor (client side).
FrontendSeniorHard◆ Commonly asked
#frontend#crdt#realtime
PracticeGeeksforGeeks Search
Alibaba
Design a search autocomplete at Google scale.
FrontendSeniorHard◆ Commonly asked
#trie#ranking#cache
PracticeGeeksforGeeks Search
Alibaba
Design a pastebin with expiring links.
BackendStaff+Medium◆ Commonly asked
#storage#ttl
PracticeGeeksforGeeks Search
Alibaba
Design a news feed / timeline.
BackendStaff+Hard◆ Commonly asked
#fanout#ranking#cache
PracticeGeeksforGeeks Search
Amazon
Design an offline-capable web app with sync.
FrontendStaff+Hard◆ Commonly asked
#frontend#offline#sync
PracticeGeeksforGeeks Search
Amazon
Design a job scheduler / cron service.
FrontendStaff+Medium◆ Commonly asked
#queues#scheduling
PracticeGeeksforGeeks Search
Amazon
Design a chat/messaging backend with delivery guarantees.
Full-stackStaff+Hard◆ Commonly asked
#websocket#queues
PracticeGeeksforGeeks Search
Amazon
Design a search autocomplete at Google scale.
Full-stackStaff+Hard◆ Commonly asked
#trie#ranking#cache
PracticeGeeksforGeeks Search
AMD
Design an event-driven order pipeline with retries.
Full-stackSeniorHard◆ Commonly asked
#events#queues
PracticeGeeksforGeeks Search
AMD
Design a feature-flag service.
Full-stackSeniorMedium◆ Commonly asked
#config#rollout
PracticeGeeksforGeeks Search
AMD
Design a rate limiter for a public API.
FrontendSeniorMedium◆ Commonly asked
#token-bucket#redis
PracticeGeeksforGeeks Search
AMD
Design an offline-capable web app with sync.
FrontendSeniorHard◆ Commonly asked
#frontend#offline#sync
PracticeGeeksforGeeks Search