1600+ Real Interview Questions from 50+ Top Companies

Google, Amazon, Meta, Microsoft, Apple, Tesla, NVIDIA, OpenAI, Stripe + 45 more companies worldwide

Behavioral • System Design • DSA • Technical • Product • Leadership

✓ Free to browse • 25 full answers/month • No credit card

Behavioral Amazon SDE • L5 Medium

Tell me about a time you had to make a difficult technical decision under pressure.

S: Led migration of payment service during Black Friday freeze. Team of 6, $4M daily transaction volume at stake.

T: Needed to reduce P99 latency by 40% without any downtime or data loss — with only 48 hours before code freeze.

A: Proposed shadow deployment with 5% canary traffic. Got buy-in from team in 30-min design review. Personally monitored rollout with custom dashboards.

R: Achieved 52% latency reduction with zero incidents. Saved estimated $2M in potential Black Friday revenue loss.

🔒 Sign up free to see the full answer

Sign Up Free — 25 answers/month
STAR Format ~10 min Asked 47 times
System Design Google SDE • L5 Hard

Design a URL shortener that handles 10 billion clicks per month.

Requirements: Read-heavy (100:1 ratio), low latency (<10ms), high availability (99.99%), 100M new URLs/month.

Encoding: Base62 (a-z, A-Z, 0-9) gives 62^7 = 3.5 trillion unique combinations — more than enough.

High-level architecture: API Gateway → Write Service → Database (Cassandra for writes) + Cache (Redis) for hot reads. CDN for geographic distribution. Consistent hashing for shard routing...

🔒 Full architecture breakdown inside

Sign Up Free
DSA / Coding Meta SDE • L4 Medium

Given an array of integers, find two numbers that add up to a target sum.

Approach: Use a hash map to store complements. For each number, check if (target - number) exists in the map. One pass solution.

def two_sum(nums, target):

seen = {}

for i, num in enumerate(nums):

complement = target - num

if complement in seen: return [seen[complement], i]

seen[num] = i

🔒 Full solution + complexity analysis

Sign Up Free

1600+ more questions available

Google, Amazon, Meta, Microsoft, Apple, Tesla, NVIDIA, Netflix + 45 more companies

Browse All Questions Free →

25 full answers/month free. Pro = unlimited.

1600+ Questions Across 50+ Companies

Trillion-Dollar Companies & FAANG+

Google • Amazon • Meta • Apple • Microsoft • NVIDIA • Tesla • Netflix

Top Tech & AI

OpenAI • Anthropic • Salesforce • Adobe • Oracle • SAP • IBM • Atlassian • Palantir • Databricks • Snowflake

Unicorns & High-Growth

Stripe • Uber • Airbnb • Spotify • Coinbase • DoorDash • Snap • Pinterest • Lyft • Robinhood • Shopify • Block • Twilio • Reddit • Discord

Finance

Goldman Sachs • JP Morgan • Morgan Stanley • Bloomberg • Visa • PayPal

India Unicorns

Flipkart • Razorpay • CRED • Swiggy • PhonePe • Zerodha • Groww • Meesho • Dream11 • Ola • Zomato • Paytm • Freshworks • Myntra

Roles: SDE I-III • Staff • Principal • SDM • Sr SDM • Director • VP • PM • TPM • Data Engineer • ML Engineer • Data Scientist