Before the interview, there was a written test (pen and paper) with fill in the blanks type questions. The test was based on domain knowledge, so make sure you have a strong grip on your core subject concepts.
The questions were honestly quite tricky and unexpected — don't assume it'll be straightforward. Some questions may catch you off guard, so don't just prepare the basics. Go deeper into your domain and be ready for questions that test your understanding beyond the surface level.
Difficult interview
Application
I applied through university. I interviewed at Efftronics Systems in Dec 2021
Interview
The first test was written test 1 conducted in our clg . The selected students went through technical interview 1 with is conducted by third parties (not efftronics) . The final interview is at their office which comprises of written test( design +alp ) and afternoon interview on what we designed
I applied through university. I interviewed at Efftronics Systems (Mangalagiri) in Nov 2025
Interview
The Efftronics Firmware Engineer interview includes an aptitude and C language test, followed by technical rounds on C, algorithms, digital electronics, and a final HR round assessing problem-solving and communication.
I applied through university. I interviewed at Efftronics Systems (Krishna) in Mar 2024
Interview
It is very difficult to crack the interview.And we are there at the location at 8:30 Am.And the whole interview process starts at sharp 8:30 until 6 Pm.And there will be Psychology test,medical test, Aptitude test,C programming test,And technical based test.