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System design
Problems

System design problems

95 problems · 6 free

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Search problems

Not started UPI wallet classes Kata · 30 min M1 Kata Difficulty 1 of 5 30 min
Not started T20 scorecard Kata · 45 min M1 Kata Difficulty 2 of 5 45 min
Not started Refactor the split ladder Kata · 30 min M2 Kata Difficulty 2 of 5 30 min
Not started Food delivery bill Kata · 30 min M3 Kata Difficulty 2 of 5 30 min
Not started Notify me when back in stock Kata · 30 min · Goldman Sachs (India) M3 Kata Difficulty 2 of 5 30 min Goldman Sachs (India)
Not started Logging framework Machine coding · 60 min · Razorpay M3 Machine coding Difficulty 2 of 5 60 min Razorpay
Not started Tic-tac-toe Low-level design · 30 min M4 Low-level design Difficulty 1 of 5 30 min
Not started Library management Low-level design · 45 min M4 Low-level design Difficulty 1 of 5 45 min
Not started Parking lot Low-level design · 45 min · Swiggy +4 M4 Low-level design Difficulty 2 of 5 45 min Swiggy, Razorpay +3
Not started Elevator system Low-level design · 45 min M4 Low-level design Difficulty 3 of 5 45 min
Not started Vending machine Low-level design · 45 min M4 Low-level design Difficulty 2 of 5 45 min
Not started Movie ticket booking Low-level design · 60 min M4 Low-level design Difficulty 3 of 5 60 min
Not started Train ticket booking with waitlist Low-level design · 60 min · Swiggy M4 Low-level design Difficulty 4 of 5 60 min Swiggy
Not started Cab booking Low-level design · 60 min · Swiggy +1 M4 Low-level design Difficulty 3 of 5 60 min Swiggy, Razorpay
Not started Chess Low-level design · 60 min · Swiggy M4 Low-level design Difficulty 3 of 5 60 min Swiggy
Not started Food delivery cart Low-level design · 45 min · Swiggy M4 Low-level design Difficulty 2 of 5 45 min Swiggy
Not started Cron job scheduler Low-level design · 45 min · Swiggy Instamart M4 Low-level design Difficulty 3 of 5 45 min Swiggy Instamart
Not started Election and voter management Low-level design · 60 min · Uber M4 Low-level design Difficulty 3 of 5 60 min Uber
Not started Meeting room scheduler Low-level design · 45 min · Uber M4 Low-level design Difficulty 3 of 5 45 min Uber
Not started In-memory file system shell Machine coding · 90 min · Uber +1 M4 Machine coding Difficulty 3 of 5 90 min Uber, Atlassian
Not started Search autocomplete (code level) Low-level design · 45 min · Amazon India M4 Low-level design Difficulty 3 of 5 45 min Amazon India
Not started Splitwise Machine coding · 90 min · Razorpay +1 M5 Machine coding Difficulty 3 of 5 90 min Razorpay, Swiggy
Not started Buy now, pay later Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 3 of 5 90 min Flipkart
Not started Restaurant order router Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 3 of 5 90 min Flipkart
Not started Quick commerce dispatch Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 3 of 5 90 min Flipkart
Not started Transaction issue resolution desk Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 3 of 5 90 min PhonePe
Not started Hackathon platform Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 3 of 5 90 min PhonePe
Not started App version rollout manager Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 3 of 5 90 min PhonePe
Not started Payment gateway Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 4 of 5 90 min PhonePe
Not started Prepaid wallet with offers Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 2 of 5 90 min PhonePe
Not started In-memory search engine Machine coding · 90 min · Razorpay M5 Machine coding Difficulty 3 of 5 90 min Razorpay
Not started Pub-sub queue Machine coding · 90 min · Razorpay M5 Machine coding Difficulty 4 of 5 90 min Razorpay
Not started Quick commerce inventory with holds Machine coding · 90 min · Swiggy +1 M5 Machine coding Difficulty 4 of 5 90 min Swiggy, PhonePe
Not started Movie review platform Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 2 of 5 90 min Flipkart
Not started Phonebook Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 2 of 5 90 min Flipkart
Not started Task tracker Machine coding · 90 min · PhonePe +1 M5 Machine coding Difficulty 2 of 5 90 min PhonePe, Flipkart
Not started Q&A forum Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 3 of 5 90 min Flipkart
Not started Social feed Machine coding · 90 min · Gojek +1 M5 Machine coding Difficulty 3 of 5 90 min Gojek, Flipkart
Not started Loyalty coin auction Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 3 of 5 90 min Flipkart
Not started Stock exchange order book Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 4 of 5 90 min Flipkart
Not started EMI loan calculator Machine coding · 90 min · Razorpay M5 Machine coding Difficulty 2 of 5 90 min Razorpay
Not started Survey service Machine coding · 90 min · Razorpay M5 Machine coding Difficulty 2 of 5 90 min Razorpay
Not started Versioned document store Machine coding · 90 min · Razorpay +1 M5 Machine coding Difficulty 3 of 5 90 min Razorpay, PhonePe
Not started Ad serving engine Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 4 of 5 90 min PhonePe
Not started Photo sharing app Machine coding · 90 min · Razorpay M5 Machine coding Difficulty 2 of 5 90 min Razorpay
Not started Bowling alley scorer Machine coding · 90 min · Flipkart M5 Machine coding Difficulty 2 of 5 90 min Flipkart
Not started Snakes and ladders Machine coding · 90 min · Swiggy Instamart +1 M5 Machine coding Difficulty 2 of 5 90 min Swiggy Instamart, PhonePe
Not started Server resource allocator Machine coding · 90 min · PhonePe M5 Machine coding Difficulty 4 of 5 90 min PhonePe
Not started Git-like version control Machine coding · 120 min · Razorpay M5 Machine coding Difficulty 5 of 5 120 min Razorpay
Not started In-memory key-value store with transactions Machine coding · 90 min · Razorpay M5 Machine coding Difficulty 5 of 5 90 min Razorpay
Not started Snake game Code design · 60 min · Atlassian M5 Code design Difficulty 3 of 5 60 min Atlassian
Not started Rate limiter Code design · 60 min · Zomato +3 M5 Code design Difficulty 3 of 5 60 min Zomato, Razorpay +2
Not started Court booking Code design · 60 min · Atlassian M5 Code design Difficulty 3 of 5 60 min Atlassian
Not started Agent rating aggregator Code design · 60 min · Atlassian M5 Code design Difficulty 2 of 5 60 min Atlassian
Not started Ranked-choice vote counter Code design · 60 min · Atlassian M5 Code design Difficulty 2 of 5 60 min Atlassian
Not started URL router Code design · 60 min · Atlassian M5 Code design Difficulty 3 of 5 60 min Atlassian
Not started Bounded blocking queue Concurrency · 45 min M6 Concurrency Difficulty 3 of 5 45 min
Not started Multi-threaded pub-sub Concurrency · 60 min · Uber M6 Concurrency Difficulty 4 of 5 60 min Uber
Not started Delayed job scheduler with workers Concurrency · 60 min M6 Concurrency Difficulty 4 of 5 60 min
Not started Circuit breaker Concurrency · 45 min · Uber M6 Concurrency Difficulty 3 of 5 45 min Uber
Not started Thread-safe seat booking Concurrency · 45 min M6 Concurrency Difficulty 3 of 5 45 min
Not started Follow and unfollow API and DB · 45 min · Swiggy M7 API and DB Difficulty 2 of 5 45 min Swiggy
Not started Paginated transaction history API and DB · 45 min · District by Zomato M7 API and DB Difficulty 2 of 5 45 min District by Zomato
Not started Delivery partner schema API and DB · 45 min · Zomato M7 API and DB Difficulty 2 of 5 45 min Zomato
Not started Splitwise schema and concurrency API and DB · 45 min M7 API and DB Difficulty 3 of 5 45 min
Not started Messaging app schema API and DB · 45 min · Uber M7 API and DB Difficulty 2 of 5 45 min Uber
Not started URL shortener Board High-level design · 45 min · Atlassian M8 High-level design Difficulty 2 of 5 45 min Atlassian
Not started Pastebin Board High-level design · 45 min M8 High-level design Difficulty 2 of 5 45 min
Not started Distributed rate limiter Board High-level design · 45 min M8 High-level design Difficulty 3 of 5 45 min
Not started Notification service Board High-level design · 60 min · Zomato +3 M8 High-level design Difficulty 3 of 5 60 min Zomato, Uber +2
Not started Subscriptions on a payment gateway Board High-level design · 60 min · Razorpay +1 M8 High-level design Difficulty 4 of 5 60 min Razorpay, PhonePe
Not started Splitwise at scale High-level design · 45 min · Uber M8 High-level design Difficulty 3 of 5 45 min Uber
Not started Cross-product tagging High-level design · 45 min · Atlassian M8 High-level design Difficulty 3 of 5 45 min Atlassian
Not started Live order tracking Board High-level design · 60 min · PhonePe M8 High-level design Difficulty 3 of 5 60 min PhonePe
Not started Ticket booking at flash-sale traffic Board High-level design · 60 min · Razorpay +1 M8 High-level design Difficulty 4 of 5 60 min Razorpay, Atlassian
Not started Photo feed Board High-level design · 60 min · Atlassian +2 M8 High-level design Difficulty 4 of 5 60 min Atlassian, PhonePe +1
Not started Group chat Board High-level design · 60 min · Razorpay +1 M8 High-level design Difficulty 4 of 5 60 min Razorpay, Uber
Not started Distributed job scheduler Board High-level design · 60 min · Razorpay M8 High-level design Difficulty 4 of 5 60 min Razorpay
Not started Leaderboard High-level design · 45 min · Goldman Sachs (India) M8 High-level design Difficulty 3 of 5 45 min Goldman Sachs (India)
Not started Food or services marketplace Board High-level design · 60 min · Flipkart +1 M8 High-level design Difficulty 4 of 5 60 min Flipkart, Uber
Not started Search autocomplete at scale Board High-level design · 45 min M8 High-level design Difficulty 3 of 5 45 min
Not started Payment system Board High-level design · 60 min M8 High-level design Difficulty 4 of 5 60 min
Not started Central authentication High-level design · 45 min · Uber M8 High-level design Difficulty 3 of 5 45 min Uber
Not started Most engaged documents feed Board High-level design · 60 min · Atlassian M8 High-level design Difficulty 4 of 5 60 min Atlassian
Not started OOP rapid fire Quiz · 15 min M1 Quiz Difficulty 1 of 5 15 min
Not started Spot the principle Quiz · 15 min M2 Quiz Difficulty 2 of 5 15 min
Not started Name the pattern Quiz · 15 min M3 Quiz Difficulty 2 of 5 15 min
Not started HLD building blocks Quiz · 20 min M8 Quiz Difficulty 3 of 5 20 min
Not started Fresher product-company design round Mock loop · 90 min M9 Mock loop Difficulty 3 of 5 90 min
Not started Flipkart-style SDE-2 loop Mock loop · 210 min M9 Mock loop Difficulty 4 of 5 210 min
Not started PhonePe-style loop Mock loop · 180 min M9 Mock loop Difficulty 4 of 5 180 min
Not started Razorpay-style loop Mock loop · 150 min M9 Mock loop Difficulty 4 of 5 150 min
Not started Swiggy-style loop Mock loop · 120 min M9 Mock loop Difficulty 4 of 5 120 min
Not started Uber-style loop Mock loop · 120 min M9 Mock loop Difficulty 5 of 5 120 min
Not started Atlassian-style loop Mock loop · 120 min M9 Mock loop Difficulty 4 of 5 120 min

Level and company

Level

Company

Every company Razorpay18 PhonePe14 Flipkart13 Atlassian12 Uber12 Swiggy8 Zomato3 Goldman Sachs (India)2 Swiggy Instamart2 Amazon India1 District by Zomato1 Gojek1 Intuit1 Meesho1 Microsoft1 Oracle1

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