PREPARE FOR
INTERVIEWS LIKE THE TOP 1%
Stop preparing blindly. Get access to the Smart Interview Hub.Master thousands of real technical questions with expert feedback.
function debounce(fn: Function, delay: number) {
let timeoutId: ReturnType<typeof setTimeout> | null;
return function(this: any, ...args: any[]) {
if (timeoutId) clearTimeout(timeoutId);
timeoutId = setTimeout(() => {
fn.apply(this, args);
}, delay);
};
}
_
Middle+ Knowledge Base
Relevant
Questions.
We've selected the most popular questions asked in interviews for Middle and Middle+ developers.
"Explain the difference between useMemo and useCallback. In what cases can their usage actually degrade performance?"
"What are closures and how do they help encapsulate data in JavaScript? Give a practical example."
"How to implement centralized error handling in Express.js through middleware for async operations?"
"Explain the Dependency Injection concept in NestJS. How to properly organize module interaction through providers?"
Want to become Middle+ faster?
Frequently Asked Questions
Didn't find what you were looking for? Contact our technical support team anytime.
Both. We have basic algorithmic tracks for entry-level candidates and in-depth modules on distributed systems specifically for Senior, Staff, and Principal interviews.
Our engine uses fast speech-to-text conversion and LLM-based evaluation to simulate a real interviewer. It assesses your logic, ability to explain trade-offs, and 'soft skills' under pressure.
Yes. Our question database is updated weekly based on verified community reports about recent interviews at companies like Meta, OpenAI, and Stripe.
Active participants at our 'Pro' level get access to an exclusive referral network, where verified mentors can recommend candidates directly to their internal hiring pipelines.