Master Your Technology Interview: 1,000+ Real-World Questions & Coding Guides

Expert-curated interview questions with STAR-method answers, hands-on coding guides, and learning paths for MERN, MEAN, .NET, Azure, AI/ML, and more.

Trending:
1,000+
Questions
50+
In-Depth Guides
10+
Tech Stacks

Interview Preparation by Technology

Deep‑dive into curated STAR‑method Q&A sets. Each pillar covers real questions asked at top tech companies with production‑grade answers.

20 Questions

React

Hooks architecture, performance optimization, Server Components, state management, testing patterns, and design system architecture for 4+ years experience.

Start Preparing →
20 Questions

JavaScript

Closures, event loop, prototypal inheritance, async/await, TypeScript integration, memory management, design patterns, and security for senior roles.

Start Preparing →
20 Questions

Python

Generators, decorators, GIL, concurrency, Django vs FastAPI, pytest, data processing with pandas/numpy, and production deployment patterns.

Start Preparing →
20 Questions

System Design

URL shortener, rate limiter, chat system, notification service, distributed cache, payment processing — step-by-step with back-of-envelope calculations.

Start Preparing →
20 Questions

SQL

Query optimization, indexing strategies, window functions, CTEs, transactions, database scaling with sharding, and PostgreSQL/MySQL performance tuning.

Start Preparing →
20 Questions

MERN Stack

MongoDB, Express, React & Node.js — full-stack interview questions covering hooks, aggregation pipelines, middleware patterns, and production scaling.

Start Preparing →
20 Questions

MEAN Stack

MongoDB, Express, Angular & Node.js — change detection, RxJS, dependency injection, schema design, and event-loop internals.

Start Preparing →
20 Questions

SQL / .NET Full Stack

SQL Server, Azure SQL, .NET 10 & React — query optimization, Entity Framework, REST API security, and cloud deployment.

Start Preparing →
19 Questions

AI / ML Engineering

Azure AI, RAG, LangChain, Vertex AI & prompt engineering — production ML pipelines, grounding techniques, and vector-search architecture.

Start Preparing →
50 Questions

Generative AI & LLMs

RAG pipelines, prompt engineering, fine-tuning, safety guardrails, and system design for LLM-powered apps.

Start Preparing →

Top-Searched Technical Hard Skills

Master the interview topics that top tech companies ask most. Each silo links to in-depth guides with real questions and STAR-method answers.

Loading...

Latest Questions & Trending Guides

Freshly added content — filtered by the companies that ask these topics most.

Learning Paths — Beginner to Pro

Follow a structured roadmap to master each stack. Every step links to real guides and interview prep on this site.

SS

Curated by Surya Singh

Senior Software Engineer & Technical Interviewer

Every question on this site is written from hands-on production experience across MERN, MEAN, .NET, Azure, and AI/ML stacks. Answers follow the STAR method with real metrics so you can adapt them to your own interviews.

Connect on LinkedIn

Frequently Asked Questions

Quick answers to the career and technology questions developers ask most.

Start by mastering data structures, algorithms, and system design fundamentals. Then practice with real STAR‑method questions for your target stack (MERN, MEAN, .NET, etc.). Use our curated guides to study 20+ questions per technology, review production‑level code examples, and rehearse behavioral answers with measurable outcomes.

JavaScript/TypeScript (React, Angular, Node.js), Python (AI/ML, data engineering), C#/.NET, and Go remain the most sought‑after. Cloud skills in Azure, AWS, and Kubernetes are equally critical. Generative AI and LLM tooling (LangChain, RAG) are the fastest‑growing categories in job postings.

With focused daily study, most people reach a job‑ready level in 6–12 months. A typical path covers HTML/CSS/JS (4–6 weeks), a front‑end framework like React (4–6 weeks), back‑end with Node.js or .NET (6–8 weeks), databases (4 weeks), and deployment & DevOps basics (2–4 weeks). Our Learning Paths break this down step by step.

STAR stands for Situation, Task, Action, Result. It structures your answer so interviewers can quickly evaluate scope, ownership, technical decisions, and measurable impact. Every behavioral and scenario‑based question on this site uses the STAR format with concrete metrics, making it easy to adapt answers to your own experience.

Yes — even if you don't become an ML engineer. Understanding prompt engineering, RAG architectures, and how to integrate LLM APIs into existing apps is now a baseline expectation for senior roles. Our AI/ML interview guides and GenAI question banks cover exactly what hiring managers test for, without requiring a PhD.

Browse All Articles & Guides

Filter by topic, search by keyword, or scroll to discover everything we've published.

Filter:

Loading more…