L&T Technology Services embedded interview prep

Roles they hire for

• Automotive embedded engineer
• Embedded Linux and medical device engineer

What they emphasise

• Automotive, industrial and medical ER&D
• Embedded Linux platforms
• Validation services

Brush up on

AUTOSARYoctoIEC 62304HIL testingCAN

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 L&T Technology Services's focus areas, not leaked ones.

1. Explain how you'd ramp up on a client's codebase in your first two weeks.
2. Write a CAN signal decoder from a DBC-style description.
3. How would you set up a Yocto layer for a client board?
4. How do you estimate effort for porting a driver to a new MCU?
5. What do you do when a client's requirement is ambiguous and the deadline is fixed?

Your prep playlist

Design rounds to practise

Themes are inferred from L&T Technology Services's public product lines.