I applied through an employee referral. The process took 3 weeks. I interviewed at Gentex Corporation (Zeeland, MI) in May 2023
Interview
The interview was pretty intense, they will keep hammering you with questions for half an hour and then ask you to code 1 question which each team. There were 2 signal related questions where I was to find the avg and the 3 question was the atoi() function. They want you to be a professional in C I believe.
Interview questions [1]
Question 1
what is static, volatile and thing related to that
I applied online. I interviewed at Gentex Corporation in Feb 2026
Interview
Applied online. Two days later, asked to take an online skills evaluation, consisting of 6 problems, for which I had to write a C function. The problem statements were poorly written. The coding was fairly easy, mostly array manipulations. No hard core embedded problems, like bit manipulations. I finished 2/6 problems. 2 of the "fails" crashed their system when tested; the other two "fails", my time expired. If I only had 1 or 2 more minutes on each. Two hours after this evaluation, I got the automated rejection.
Interview questions [1]
Question 1
6 coding skills problems, to write a short C function, like, counting the number of occurrences of a string in an array of strings, or eliminating a duplicates in an array. Nothing specific to Embedded Software.
I applied online. I interviewed at Gentex Corporation (Grand Rapids, MI)
Interview
It was a few round panels back to back. They had me do some programming questions and asked me some fundamentals. They did a mix of online and in person.
Very lengthy, went through a grand total of 7 interviews over 4 different days. Included technical programming tests, phone interviews, two virtual interviews, and a day of four in-person interviews.