Interviewer: IRCTC crashes every day during tatkal bookings at 10 AM. Amazon survives Big Billion Day traffic without crashing. What’s the difference in their system design?

As a dev, do you the difference between - 150 MB/s - 150 Mb/s 90% of people still get confused.

Web devs: Where does this URL actually redirect you? Google or evil ?

Tech Lead says: Frontend can directly query DB for faster performance You are a junior frontend engineer. What’s your reply?

Read this: Hiring manager himself got auto reject in his own job posting because his CV had React and filter was set to React.js Unbelievable!!

Backend Interview Question: What’s wrong with below APIs How would you fix it?

Software engineers: What happens if you remove all the hyphens from a UUID?

If entry-level jobs themselves are disappearing, who will replace the current senior engineers in the future?

Senior backend interview question: Latency spikes every 47 minutes. Not 46. Not 48. Not 49. Exactly 47. Where do you start debugging?

Web devs: Are below URLs same or different ? Explain.

a staff engineer at my old company got laid off during cost cutting. his entire farewell meeting was 15 minutes long. week later: payment service started randomly failing. turns out he was manually fixing edge-case data corruption every night for 3 years. nobody even knew. the most dangerous systems are the ones surviving because of one invisible engineer.

Staff Engineer says : DELETE /users/{id} Return 204 instead of 200 after successful deletion. You are a junior engineer What's your answer ?

Interviewer: Your phone has no signal, no internet, no WiFi. You open Google Maps and it still works. How?

During a job interview, if the interviewer asks “Would you consider leaving if you found a better opportunity elsewhere?” how would you respond?

Tech Lead says: Never delete data, just add is_deleted = true for all tables. You are a junior engineer Will you agree?

Backend interview question: You deleted the data. You deleted the backups. You deleted the logs. A court order says produce the records. They still find them. Where?

Web devs: Are these the same URL?

Would you rather be: - Staff Engineer at Google - Principal Engineer at Anthropic. - Senior Engineer at OpenAI - Founder with $5M ARR Choose one.

Backend Interview Question: Your API works perfectly with 10k users. It falls apart at 500k. How would you fix it? You can’t change the infra.

Interviewer: You type a Instagram username and UI instantly shows "Username isn’t available" There are millions of users globally How does it check so fast?