Company overview

IT One

Latest vacancy: August 6, 2026

Vacancies: 8
Interviews: 13
Questions: 643
Tasks: 20

Published in the selected period

Vacancies · 2

All company vacancies

Java разработчик

InternJavaAug 6

Lead Frontend developer (React.js)

LeadFrontendJul 29

Published records

Interviews · 13

All company interviews

Frontend

Interviews · 4

Technical

Middle+ · 33 Questions

Java

Interviews · 4

Technical

Senior · 40 Questions

System Analyst

Interviews · 4

Technical

Senior · 9 Questions

Golang

Interviews · 1

HR

Middle+ · 4 Questions

Grouped by direction

Questions and tasks · 663

Java

Questions · 324

Can you explain the concept of data partitioning in Kafka and how it is implemented?

JuniorMiddle

Finding the first non-repeating number in an array

Live codingInternJuniorMiddle

QA / QA Automation

Questions · 120

How can you identify an element using a CSS or XPath selector?

JuniorMiddle

Frontend

Questions · 98

Tell about memoization in React: useMemo, useCallback, React.memo. When to use them?

middle+

Grouping an array of users by a selected field with nested ID map creation

Live codingJuniorMiddlemiddle+

System Analyst

Questions · 62

When are messages deleted in Kafka and RabbitMQ?

Middle

C#

Questions · 30

Can you share details of your professional experience and projects implemented?

JuniorMiddle

iOS

Questions · 5

Do you have any questions about the project or the company?

JuniorMiddle

Golang

Questions · 4

Do you live in Moscow — is the information up to date?

middle+