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CAREER TRACK PILLAR

Backend Interview Questions & System Design Guide

The systematic syllabus for Backend & Systems Engineers. Covers server runtimes, concurrency models, relational and NoSQL database indexing, caching strategies, and REST/gRPC API design.

CORE TECHNOLOGIES

12

TOTAL QUESTIONS

1623+

LEVELS COVERED

Easy · Medium · Hard

Mastery Syllabus for Backend Engineer Interviews

Server Runtimes: Node.js libuv event loop, Java JVM memory model, Python GIL
Database Architecture: Indexing (B-Tree/LSM), ACID, isolation levels, query optimization
Caching & Queues: Redis data structures, eviction policies, cache stampede mitigation
API Design: Idempotency, rate limiting, authentication (JWT/OAuth2), schema validation
Microservices & Containerization: Docker, service communication, error boundaries
TECHNOLOGY MODULES

Required Technical Codices

MODULE #05150 Questions

Django

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #06150 Questions

Docker

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #07159 Questions

Express.js

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #08150 Questions

FastAPI

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #10171 Questions

Java

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #12171 Questions

MongoDB

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #14171 Questions

Node.js

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #1875 Questions

PostgreSQL

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #1960 Questions

Prisma

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #2145 Questions

Redis

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #23150 Questions

Spring Boot

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS
MODULE #24171 Questions

SQL

Easy, Medium & Hard interview questions with model answers.

EXPLORE QUESTIONS

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Backend Interview Questions (2026 Guide) — Node, Java, Python, SQL, Redis | DevPrep | DevPrep