I applied through college or university. The process took 2 days. I interviewed at Efftronics Systems (Vijayawāda) in Apr 2018
Interview
The entire process took two days. The first round is a written test. The written test is based on technical subjects like networks, EDC and other. The selected students have an interview. In interview they asked about designing circuits like stld and MPMC programming. These two rounds took place in our college. The selected students have an interview at company in vijayawada. Its very long process. It tooks entire day. It consists of several rounds like mental ability test, general tests. There are four technical papers based on EDC, networks, MPMC, stld. Each paper consists of two questions about designing. After writing these papers we have to explain each and everything what we written. Medical test is also conducted. It requires a lot od patience.
Interview questions [1]
Question 1
A water tank contains 12 levels. Each level is connected to corresponding LED's. When water reaches a particular level, the corresponding Led have to glow. Design a circuit with minimum number of wires?
I applied through college or university. I interviewed at Efftronics Systems (Mangalagiri) in Mar 2026
Interview
there are 3 exams, 1) maths,2)digital electronics,3)embedded c programming questions. Prime numbers and square wave generator in microcontrollers. AND THEN INTERVIEW BASED ON THE ANSWERS WRITTEN BY US in the exam and few questions like what is flip flop , difference between sequential and combinational circuits
Interview questions [1]
Question 1
embedded c coding question, program counter, flip flop, relay circuit, instruction length,
3 rounds
1. Started of with the psychometric test(basix questions).
2 . 2 questions on digital electronics system design (1 hour)
3. 2 questions on controller programming (c or assembly based on your choice] {1hour]
Interview questions [1]
Question 1
1. prime number
2. generate a square wave of 50 Hz
I applied through college or university. The process took 2 weeks. I interviewed at Efftronics Systems (Vijayawāda) in May 2025
Interview
Written test Technical 1 interview Technical 2 interview Hr interview Whole day in the office food is provided questions are about the role based upon the answers u have written the interview will be
Firmware Engineer applicants have rated the interview process at Efftronics Systems with 3.7 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 67% positive. To compare, the company-average is 53.9% positive. This is according to Glassdoor user ratings.
Candidates applying for Firmware Engineer roles take an average of 5 days to get hired, when considering 3 user submitted interviews for this role. To compare, the hiring process at Efftronics Systems overall takes an average of 9 days.
Common stages of the interview process at Efftronics Systems as a Firmware Engineer according to 3 Glassdoor interviews include:
One on one interview: 100%
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