I applied through college or university. The process took 3 weeks. I interviewed at Efftronics Systems
Interview
It has around 3 rounds.
1.At college common entrance exam
After getting shortlisted in first one we r eligible to go for nxt round.
2.Round 2 is technical Interview covers all core related concepts like microprocessors,C-Programming.
3.Then there will be final round for shortlisted people which will have another TR and HR round.
Interview questions [1]
Question 1
Basic programming skills are enough.I were asked about Palindrome ques.And basic knowledge of Microprocessors and microcontrollers.
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.
I applied through college or 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 college or 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.