Knowledge Domains

55 in-depth topic articles across 10 domains, organized from foundational to advanced.

Each article covers concepts, interview questions, practice quizzes, and real-world scenarios.

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Core skills tested in every embedded interview

C Programming & Low-Level Foundations

8 topics

Core C programming skills and low-level concepts essential for embedded development

Foundation skills — always tested in interviews

MCU & System Architecture

5 topics

CPU fundamentals, MCU cores, boot process, interrupts, and driver design

Core embedded skills — essential for all roles

Peripherals

10 topics

Essential peripheral interfaces and communication protocols

Core peripheral knowledge — frequently tested
Intermediate
Deeper topics for mid-level and senior roles

RTOS & Real-Time

4 topics

Real-time programming concepts, task scheduling, and RTOS fundamentals

Critical for senior roles

Networking & Protocols

5 topics

TCP/IP, sockets, MQTT, HTTP/REST, and TLS for embedded connectivity

High priority for IoT and connected device roles

Wireless Technologies

7 topics

BLE, WiFi, LoRa, cellular IoT, UWB, and mesh networking for embedded systems

Essential for IoT, wearable, and connected device roles

Hardware & Power Design

3 topics

Hardware fundamentals, signal integrity, and low-power design for firmware engineers

Hardware understanding and power optimization
Advanced
Specialized knowledge for senior and lead positions

Embedded Linux Essentials

6 topics

Linux kernel basics, build systems, and user-space programming

For Linux-based embedded systems

Debugging, Testing & Tools

3 topics

Debugging techniques, testing strategies, power profiling, and development tools

Practical skills — essential for all embedded roles

Safety, Security & Reliability

4 topics

Safety standards, security fundamentals, OTA updates, and reliability engineering

Critical for safety-critical and secure systems