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Google
Amazon
Microsoft
Meta
Netflix
Airbnb
Spotify
Stripe
Tesla
Intel
Siemens
IBM
Oracle
Apple
LinkedIn
Samsung

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QuestionTranscript

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How You Scored

Right Data75/100
Formatting85/100
Logic90/100
Explanation70/100
Speed80/100
Interviewer

For this interview question, I'd like you to write a SQL query to find the highest-paid employee in each department.

You

I'll need to use JOIN to connect the Employee and Department tables, then find the max salary per department.

Interviewer

That's right. You need to join the tables and find maximum salaries grouped by department.

You

I can use a subquery to find the max salary per department, then join with the original tables to get the employee names.

Interviewer

That's a good approach. Can you write the query?

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Interviewer

Hi Josh, I see you built a web application with React and Node.js on your resume. Can you walk me through what the project was about and what role you played?

You

It was an e-commerce site. I worked on the frontend mostly.

Interviewer

That sounds interesting. What part of the frontend did you focus on and what was the biggest challenge you faced?

You

I built the product listing page. The challenge was performance when there were lots of items.

Interviewer

Performance issues can be tricky. How did you approach solving that and what specific steps did you take?

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Duration

45m

Difficulty Level

Target Company

Experience Level

Interviewer Tone

Engineering Branch

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QuestionTranscript
Interviewer

Hello! Let's look at a standard financial analysis problem. Given an array of stock prices over time, how would you maximize profit with just one buy and one sell?

You

I initially thought about comparing every pair of days using nested loops, but that would be O(N^2).

Interviewer

Correct, O(N^2) is too slow for large datasets. Can you think of a way to do this in a single pass?

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CPP

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85%
4 Nodes
3 Edges
System Design: LRU Cache

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Dashboard

58
Total Interviews
16h 2m
Total Time
70.5
Avg Performance
1.4%
Improvement Trend

Skill Profile

Performance Trend

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Product Engineer

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Alex Romero

Backend Engineer

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Emily Wong

UI Engineer

“Dark mode is well done. A bit more contrast in feedback sections would make it perfect.”

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Karan J.

Systems Engineer

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Lucas Meyer

Senior Software Engineer

“Rare to see interview prep software with this level of polish. Minor rough edges, but clearly built by engineers.”

N

Neha S.

Product Engineer

“The site feels fast and intentional. Some analytics widgets could load quicker on weak WiFi, but the UX is far better than most prep platforms.”

A

Alex Romero

Backend Engineer

“Navigation is clean and distraction-free. Would love keyboard shortcuts, but overall it feels like an internal engineering tool.”

S

Siddharth P.

SDE I

“Desktop experience is excellent. Mobile works fine too, though some modals feel tight on smaller screens.”

E

Emily Wong

UI Engineer

“Dark mode is well done. A bit more contrast in feedback sections would make it perfect.”

K

Karan J.

Systems Engineer

“Canvas interactions are smooth. Occasionally snapping feels aggressive, but it’s still ahead of alternatives.”

L

Lucas Meyer

Senior Software Engineer

“Rare to see interview prep software with this level of polish. Minor rough edges, but clearly built by engineers.”

N

Neha S.

Product Engineer

“The site feels fast and intentional. Some analytics widgets could load quicker on weak WiFi, but the UX is far better than most prep platforms.”

A

Alex Romero

Backend Engineer

“Navigation is clean and distraction-free. Would love keyboard shortcuts, but overall it feels like an internal engineering tool.”

S

Siddharth P.

SDE I

“Desktop experience is excellent. Mobile works fine too, though some modals feel tight on smaller screens.”

E

Emily Wong

UI Engineer

“Dark mode is well done. A bit more contrast in feedback sections would make it perfect.”

K

Karan J.

Systems Engineer

“Canvas interactions are smooth. Occasionally snapping feels aggressive, but it’s still ahead of alternatives.”

L

Lucas Meyer

Senior Software Engineer

“Rare to see interview prep software with this level of polish. Minor rough edges, but clearly built by engineers.”

N

Neha S.

Product Engineer

“The site feels fast and intentional. Some analytics widgets could load quicker on weak WiFi, but the UX is far better than most prep platforms.”

A

Alex Romero

Backend Engineer

“Navigation is clean and distraction-free. Would love keyboard shortcuts, but overall it feels like an internal engineering tool.”

S

Siddharth P.

SDE I

“Desktop experience is excellent. Mobile works fine too, though some modals feel tight on smaller screens.”

E

Emily Wong

UI Engineer

“Dark mode is well done. A bit more contrast in feedback sections would make it perfect.”

K

Karan J.

Systems Engineer

“Canvas interactions are smooth. Occasionally snapping feels aggressive, but it’s still ahead of alternatives.”

L

Lucas Meyer

Senior Software Engineer

“Rare to see interview prep software with this level of polish. Minor rough edges, but clearly built by engineers.”

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