Frontend

Tell me about the Critical Rendering Path — what happens during the construction of the rendering tree?

What is a Union type in TypeScript?

Tell us about your experience. Share the most interesting things and impress us with your achievements.

What happens after the user enters a URL in the browser and presses Enter, until the final page is rendered?

How was the interaction organized: did you call each other, or how were the tasks set and explained?

Will you be able to occasionally come to the office if necessary?

Do you understand what polymorphism is? Can you explain in your own words?

Middle

Госуслуги

What happens to list elements if their keys (indices) change?

Implement the delay function with the specified signature, using Promise and setTimeout.

What will happen if the dependencies array is not specified in useEffect? If you add count to the dependencies array and press the button, will the cleanup function be triggered?

Middle+

IT One

Write an implementation of the delay function that takes the number of milliseconds and returns a Promise that resolves after the specified time.

In the graph, each circle represents an individual star. The position of the circle’s center indicates the star’s temperature in kelvins (K) and its luminosity (rate of energy emission) relative to that of the sun (Lsun). Note that higher temperatures are to the left. The size of the circle indicates the relative physical size of the star, and the labels indicate the types of stars shown. Apart from the main sequence stars, the group of stars with the greatest range of temperatures is the group of: - Red giants - Red supergiants - White dwarfs - Blue giants

What is interface responsiveness, and what kind of metric is it?

Middle+

Okko

How to manage lazy loading in standalone components: does it happen by default or does it need to be configured?

The table constructor you mentioned, what was it implemented with — did you use any libraries or was it within pure Angular?

Have you had experience attaching events to website buttons? Did you do it yourself or integrate ready-made solutions?

Was this the most complex application you've worked on, or were there others more complex?

That’s a pragmatic approach—tokens plus a consistent wrapper pattern prevents “one-off” fixes and makes alignment decisions auditable in Storybook. How do you decide when a visual “nudge” (like your -2px adjustment) belongs as a global token versus a component-scoped exception, and how do you govern that decision?

How does a hash table (HashMap) work internally?

Middle+

Альфа-Банк

/** * Task 3: Analyze the function below and fix any errors. Explain the role of the `never` type in TypeScript. */ function throwError(): never { throw new Error('An error occurred'); } /** * Task 4: Transform the given type `MaybeProps` to make all of its properties required. */ type MaybeProps = { a?: number; b?: string; }; /** * Task 5: Create a generic type `Container` that contains a single property `value`. * The type of `value` should be constrained to either `string` or `number`. */ type Container<T> = { value: T; };