TCS (engineering and IoT) embedded interview prep

Roles they hire for

• Embedded and IoT engineer
• Embedded validation engineer

What they emphasise

• Engineering and IoT services
• Embedded Linux and connectivity
• Testing services

Brush up on

Embedded CLinuxMQTTPythonTesting basics

How the rounds usually run

A typical engineering services loop for embedded roles. Companies vary by team and seniority.

Online test

• Aptitude and reasoning
• C programming, electronics and OS basics

Example: What does sizeof return for a struct with a char, an int and a char, and why?

Technical 1: C and fundamentals

• Pointers, memory, data structures in C
• Your projects and the tools you used

Example: Reverse a singly linked list in place.

Technical 2: Domain for the project

• Depends on the project: AUTOSAR, Linux drivers, RTOS or protocols
• Scenario questions from real client work

Example: Explain how you'd add a new peripheral driver in the stack you know best.

Client interview (for project roles)

• The client's own technical screen for their programme
• Communication and ownership

Example: Explain your last module's design to someone who didn't build it.

HR

• Notice period, location and compensation

Example: Are you open to onsite assignments?

Practice questions

Original questions written for TCS (engineering and IoT)'s focus areas, not leaked ones.

1. Explain how an IoT device sends data to the cloud securely.
2. Write a function that reverses words in a sentence in place.
3. What are MQTT QoS levels, and which would you use for an alarm?
4. How would you test firmware for a smart meter?
5. Explain the Linux boot process briefly.

Your prep playlist

Design rounds to practise

Themes are inferred from TCS (engineering and IoT)'s public product lines.