Mid Frontend at Infosys

FrontendMidOffer◆ Commonly asked· 2024

Mid frontend interview. Pragmatic questions — more real-world than pure puzzles.

The loop · 5 rounds

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

Binary tree level order traversal.
MidMedium◆ Commonly asked
#tree#bfs
PracticeLeetCode GeeksforGeeks
Rotate array.
MidMedium◆ Commonly asked
#array
PracticeLeetCode GeeksforGeeks
Longest substring without repeating characters.
MidMedium◆ Commonly asked
#sliding-window#string
PracticeLeetCode GeeksforGeeks

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

Build a nested checkbox tree with indeterminate state.
MidHard◆ Commonly asked
#react#recursion
PracticeGeeksforGeeks Search
Build a "polling" progress UI that updates from an API.
MidMedium◆ Commonly asked
#react#async
PracticeGeeksforGeeks Search

Round 03 · 1 question

Low-Level Design

Object-oriented / low-level design of a focused module.

Model the state machine for a checkout flow.
MidMedium◆ Commonly asked
#state-machine
PracticeGeeksforGeeks Search

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

What causes layout thrashing and how do you avoid it?
MidHard◆ Commonly asked
#perf#dom
PracticeGeeksforGeeks Search
Difference between CSS Grid and Flexbox — when to use each.
MidEasy◆ Commonly asked
#css#layout
PracticeGeeksforGeeks Search
Accessibility: how do you make a custom widget usable?
MidMedium◆ Commonly asked
#a11y
PracticeGeeksforGeeks Search

Round 05 · 2 questions

Behavioral / HR

Values, collaboration, and past-experience (STAR) questions.

Tell me about a time you led without a title.
Mid◆ Commonly asked
#leadership#star
Tell me about a time you had to learn something quickly.
Mid◆ Commonly asked
#learning#star

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.