Senior Firmware Engineer Interview Questions

222 senior firmware engineer interview questions shared by candidates

Aptitude questions: N ladder problem: A person can take either one step or two step at a time. In how many ways he can climb ladder which has n steps. DSP math library question related to trignometric function implementation using c code. Also how do implement log(), sqrt() etc. DSP questions on Q format.
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Senior Staff Firmware Engineer

Interviewed at QuickLogic

3.9
Jul 23, 2022

Aptitude questions: N ladder problem: A person can take either one step or two step at a time. In how many ways he can climb ladder which has n steps. DSP math library question related to trignometric function implementation using c code. Also how do implement log(), sqrt() etc. DSP questions on Q format.

There's not a particular question that's most difficult. I'd recommend being pretty up on RTOS and recent embedded microcontrollers. In my case I feel I am rather up on C, C++, board design and bringup, hw tools, author-level linker and debugger tech, fair RTOS understanding at a kernel level, register-level ARM and AVR understanding, and decades of UNIX experience, and those didn't get me to "yes", despite all those fitting the job description. So you might wish to set expectations that a whole constellation of judgement may be at play and a good technical show may be just half of the requirements. I really don't know why I wasn't selected, unfortunately, so my guess is in a market like SF or Seattle one gets a pretty sweet pool from which to choose.
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Senior Embedded/Firmware Software Engineer

Interviewed at Synapse Product Development

4.4
Nov 26, 2014

There's not a particular question that's most difficult. I'd recommend being pretty up on RTOS and recent embedded microcontrollers. In my case I feel I am rather up on C, C++, board design and bringup, hw tools, author-level linker and debugger tech, fair RTOS understanding at a kernel level, register-level ARM and AVR understanding, and decades of UNIX experience, and those didn't get me to "yes", despite all those fitting the job description. So you might wish to set expectations that a whole constellation of judgement may be at play and a good technical show may be just half of the requirements. I really don't know why I wasn't selected, unfortunately, so my guess is in a market like SF or Seattle one gets a pretty sweet pool from which to choose.

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