JavaScript Interview Questions and Skill Tests

javascript

Javascript

React Interview Questions and Skill Tests

react

ReactJS

Node.js Interview Questions and Skill Tests

node

NodeJS

PHP Interview Questions and Skill Tests

Git Interview Questions and Skill Tests

TypeScript Interview Questions and Skill Tests

typescript

TypeScript

CSS covers styling and layout in frontend development—how a website looks and adapts. It includes selectors and the cascade, box model, positioning and Flexbox/Grid, typography and colors, responsive design (media/container queries), animations/transitions, and building reusable UI themes and components.

CSS Interview Questions and Skill Tests

Develop and maintain iOS mobile applications using UIKit and SwiftUI · Design and implement new features, optimize and refactor existing code

Swift and iOS Developer Interview Questions and Skill Tests

swift

Swift (IOS Developer)

Python Interview Questions and Skill Tests

python

Python

Soft Skills Interview Questions for Developers

soft-skills

Soft Skills

Frontend System Design is a hard skill—it’s about technical architecture.
But it’s evaluated alongside soft skills (communication & trade-off reasoning).
App architecture & state strategy (SPA/MPA, SSR/ISR, microfrontends)
Performance budgets, caching, CDN/edge, code-splitting
API contracts, schema/versioning, error handling & resiliency
Design system architecture, accessibility, i18n
Testing strategy, observability, security, and deployments

Frontend System Design Interview Questions and Skill Tests

frontend-system-design

Frontend System Design

SQL Databases questions evaluate a candidate’s understanding of relational data, querying, joins, indexing, normalization, transactions, and performance optimization. These questions help assess how well a developer can design database structures, write efficient queries, and work with real-world data reliably.

SQL Database Interview Questions and Skill Tests

sqldatabase

SQL databases

Category focused on command-line skills, shell scripting, and everyday terminal usage for developers. It covers working with files, processes, permissions, pipes, redirection, and common Unix-like system commands used in real development and DevOps workflows.

Linux, Unix and Bash Interview Questions and Skill Tests

linux-unix-bash-shell-cli

Linux / Unix / Bash / Shell / CLI

Application security for developers building React frontends and Node.js backends. Covers secure design, authentication and authorization, browser and API defenses, input validation, data protection, dependency and container security, logging, and production safeguards across the full-stack development lifecycle.

React and Node.js Application Security Interview Questions

cybersecurity

Application Security for React and Node.js

Database optimization interview questions focused on query performance, indexing, execution plans, joins, pagination, transactions, and practical strategies for improving database efficiency in real-world systems.

Database Performance Optimization Interview Questions and Tests

dboptimization

Database optimization

MongoDB Performance Tuning category focused on improving query speed, indexing efficiency, schema design, aggregation performance, and scaling strategies for real-world MongoDB applications.

MongoDB Performance Tuning Interview Questions and Tests

mongodbtunning

MongoDB Performance Tuning

Embedded Development covers the design and programming of software that runs directly on hardware devices. This category includes microcontrollers, real-time systems, sensors, communication protocols, memory management, hardware interfaces, debugging, and performance optimization for resource-constrained environments.

Embedded Systems Interview Questions and Skill Tests

embedded

Embedded development

Electronics Basics covers foundational electronics knowledge for embedded engineers, including circuit fundamentals, basic components, schematic reading, practical signal handling, and power and protection concepts.

Electronics Fundamentals Interview Questions for Embedded Engineers

electronics-basics

Electronics Basics

Master C and C++ for embedded systems, including memory management, pointers, bitwise operations, hardware register access, interrupt-safe code, real-time constraints, and efficient interaction with microcontrollers and peripherals.

Embedded C and C++ Interview Questions and Skill Tests

c_plus_embedded

C/C++ for Embedded

Assesses practical knowledge of Docker fundamentals, including images, containers, Dockerfiles, volumes, networking, registries, Docker Compose, security, troubleshooting, and container lifecycle management. Covers the ability to containerize applications, configure reproducible environments, optimize builds, manage persistent data and service communication, diagnose common runtime issues, and apply reliable containerization practices in development and production.

Docker Interview Questions and Skill Tests for Developers

docker

Docker

UART

GPIO

Bitwise Operations

Timers

Interrupts

Cross Compilation

Memory-Mapped I/O

RTOS Basics

Pointers

Syntax and Types

Arrays and Strings

Structs and Unions

Function Pointers

Preprocessor Macros

Memory Layout

Undefined Behavior

Volatile

Const Correctness

Registers

Instruction Cycle

Stack and Heap

Calling Conventions

RAM vs Flash

Endianness

Alignment and Padding

Cache Basics

Nested Interrupts

ISR Design

Interrupt Latency

ARM Cortex-M

ESP32

STM32

RISC-V MCUs

What is an MCU

Clock System

Reset Sources

Pin Multiplexing

Compiler Flags

Optimization Levels

Map Files

Linker Scripts

Static Libraries

Startup Files

Makefiles

CMake

Dependency Management

Reset Sequence

Startup Code

Firmware Image Layout

Bootloader Basics

Dual Bank Update

Recovery Mode

Flash Memory

OTA Update Basics

Firmware Versioning

Static Allocation

Dynamic Allocation

Heap Fragmentation

Memory Pools

Stack Overflow

Buffer Overflow

Use After Free

DMA Buffers

Ring Buffers

Zero-Copy Basics

Watchdog

Comparators

Capture Compare

RS-485

Modbus

Ethernet

BLE Basics

Wi-Fi Basics

Driver Architecture

Register-Level Programming

Low-Level Drivers

Polling vs Interrupts

State Machines in Drivers

Timeout Handling

Sensor Drivers

Actuator Control

Display Drivers

Superloop

Cooperative Scheduling

State Machines

Mutex

Semaphore

Queues

Embedded Developer

Embedded development (1)

Embedded Developer