Mid Backend at Deloitte

BackendMidOffer◆ Commonly asked· 2023

A mid backend loop. Balanced across coding, design, and collaboration.

The loop · 5 rounds

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

Unique paths.
MidMedium◆ Commonly asked
#dp#grid
PracticeLeetCode GeeksforGeeks
Largest rectangle in histogram.
MidHard◆ Commonly asked
#stack#monotonic-stack
PracticeLeetCode GeeksforGeeks
Insert interval.
MidMedium◆ Commonly asked
#intervals
PracticeLeetCode GeeksforGeeks

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

Implement a JSON config loader with env overrides.
MidEasy◆ Commonly asked
#config
PracticeGeeksforGeeks Search
Implement cursor-based pagination over a sorted dataset.
MidMedium◆ Commonly asked
#pagination#api
PracticeGeeksforGeeks Search

Round 03 · 1 question

Low-Level Design

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

Design a deck of cards + a card game.
MidEasy◆ Commonly asked
#oop
PracticeGeeksforGeeks Search

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

How do you secure secrets and handle auth tokens?
MidMedium◆ Commonly asked
#security
PracticeGeeksforGeeks Search
How do you retry without amplifying load?
MidHard◆ Commonly asked
#reliability
PracticeGeeksforGeeks Search
Explain the CAP theorem with a practical example.
MidHard◆ Commonly asked
#distributed
PracticeGeeksforGeeks Search

Round 05 · 2 questions

Behavioral / HR

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

Tell me about a time you simplified something overly complex.
Mid◆ Commonly asked
#judgment#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.